How Big Is Mac Os High Sierra The Missing Manual Pdf Install?

MacOS Sierra: The Missing Manual The book that should have been in the box. And AI photo search. Once again, David Pogue brings his humor and expertise to the #1 bestselling Mac book. Whether you’re a developer or a home-user, this guide offers a wealth of detail on Apple’s OS X 10.12 operating system, this new edition covers everything. So before you download and install macOS 10.13 High Sierra, make sure your Mac is backed up. For information on how to do this, head over to our ultimate guide to backing up your Mac.

macOS Sierra makes use of a new name for the Mac operating system, but the same clean install and upgrade install methods that are familiar to most Mac users are fully supported by the new OS.

The clean install option is the installation method we will look at in this guide. Don’t worry if you would rather make use of the upgrade installation method; we've got you covered with a complete guide to upgrading to macOS Sierra.

Clean or Upgrade Install of macOS Sierra?

The upgrade install is by far the easiest method of upgrading your Mac to macOS Sierra. The upgrade install preserves all of your current user data, documents, and apps while upgrading the existing operating system on your Mac’s startup drive to macOS Sierra. The advantage is that once the upgrade is completed, your Mac is ready to go, with all your personal data intact and ready to be used.

The clean install option, on the other hand, replaces the contents of the target drive, wiping away any existing data on the drive and replacing it with a pristine copy of macOS Sierra. A clean install may be a good choice if you are experiencing software-based problems with your Mac that you have not been able to rectify. Just remember, that while a clean install may solve the issue, you are effectively starting over from scratch and all of your current user data and applications will be gone.

What You Need to Perform a Clean Install of macOS Sierra

Before we get too far along, a word about this guide. The clean install process we will outline in the guide will work for both the gold master version as well as the full released version of macOS Sierra

Before assembling any of the needed components for a clean install, you should verify that your Mac is able to run macOS Sierra.

Once you've determined that your Mac is capable of making use of the new OS, you should gather the following:

macOS Sierra Installer, available from the Mac App Store.
A 16 GB USB flash drive. The flash drive is needed for a clean install on your Mac’s startup drive. If you plan to use the clean install on a non-startup drive, you don't need the USB flash drive.
A current backup of your Mac. We highly recommend making a clone of your Mac before performing the update. This will allow you to easily return your Mac to the condition it was in before you installed macOS Sierra. At the very least, you should have a current Time Machine backup or the equivalent.

Once you have everything that's needed, you can move on to the next step.

macOS Sierra Clean Install Can Target Startup and Non-Startup Drives

There are two types of clean installs that can be performed with the macOS Sierra installer on your Mac. Each has slightly different requirements, but the end result is a pristine version of macOS Sierra installed on your Mac.

Clean Install on a Non-Startup Drive

The first type is to install the OS on an empty volume or drive, or at least on a target drive that you don’t mind being erased and losing all of its data.

This is the easiest type of clean install to perform. It doesn't require you to make a bootable copy of the installer since you can run the installer directly from your Mac’s startup drive.

Of course, for this method to work, you need to have an available second drive or volume that you can use. For most Mac models, this means an external drive of some type, which will become the target for the installation and will also become the startup drive whenever you choose to boot into macOS Sierra.

This type of installation is often used when you want to try out a new version of the Mac OS, but don't wish to totally commit to the new OS and want to be able to continue to use the older version. It's also a common method of installation for trying out a public beta of macOS.

Clean Install on Your Mac’s Startup Drive

The second type of clean install is performed by first erasing your Mac’s current startup drive, and then installing macOS Sierra. This method requires you to make a bootable copy of the macOS Sierra installer, and use it to boot from and then erase your Mac’s current startup drive.

This method will result in complete loss of all data on the startup drive but may be a good choice for some users. This is especially true if, over time, your Mac has accumulated quite a few bits of data debris, the sort of thing that occurs when you have a lot of apps that have been installed and uninstalled over time; this includes performing a lot of OS upgrades as well. The resulting problems can show themselves in a variety of ways, such as your Mac running slowly, having unusual startup issues or shutdown issues, crashes, or apps that don't run correctly or just quit on their own.

As long as the problem isn't hardware-related, reformatting the startup drive and performing a clean install of an OS may do wonders in reviving your Mac.

Let's Get Started: Clean Installing macOS Sierra

The main difference between the two clean install methods comes down to the target for the clean install.

If you're going to perform a clean install on the startup drive, you first need to create a bootable copy of the installer, boot from the bootable installer, erase the startup drive, and then install macOS Sierra. Essentially, follow this guide starting with the first step, and proceed from there.

If you're going to perform a clean install on a non-startup drive, you can skip most of the preliminary steps, and jump right to the point where you start the install of macOS Sierra. We suggest reading through all the steps anyway before you actually perform the installation so that you're familiar with the process.

macOS Sierra Clean Install Requires Erasing the Target Drive

To get started with a clean install of macOS Sierra on either a startup drive or a non-startup drive, make sure you have done the following:

Backed up your Mac with Time Machine or the equivalent, and if possible, created a clone of your current startup drive. We suggest doing this even if your clean install target is a non-startup drive.
Downloaded the macOS Sierra Installer from the Mac App Store. Hint: you can quickly find the new OS by using the search field within the Mac App store.
Once the download of the macOS Sierra Installer completes, it will automatically launch the installer. Quit the macOS Sierra Installer app without performing the installation.

Preliminary Steps for Clean Install on a Non-Startup Drive

In order to perform a clean install on a non-startup drive, you'll need to erase the target drive if it contains any of the other Mac operating systems. If the non-startup drive is already empty, or only contains personal data, then you can skip the erase process.

To erase the non-startup drive, use the instructions found in either:

After the non-startup drive is erased, you can jump to the next step to continue the install process.

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Preliminary Steps for Clean Install on a Mac Startup Drive

Follow the instructions for how to make a bootable flash installer of OS X or macOS. This will make the bootable flash drive you need.
Connect the bootable flash drive containing the macOS Sierra installer to your Mac.
Restart your Mac while holding down the option key.
After a bit of a wait, your Mac will display the macOS Startup Manager, which will display all of the bootable devices that your Mac can start up from. Use the arrow keys to select the macOS Sierra installer on the USB drive, and then press the enter or return key on your keyboard.
Your Mac will start up from the USB flash drive. This can take a bit of time, depending on how fast the USB port is, and how fast the USB flash drive is.
The installer will display a welcome screen asking you to choose a country/language to use. Make your selection and click the Continue button.
Once the startup process completes, your Mac will display the macOS Utilities window, with the following options listed:
1. Restore from Time Machine Backup
2. Install macOS
3. Get Help Online
4. Disk Utility
To continue with the clean install, we need to erase your Mac’s startup drive by making use of Disk Utility.
Important: You are about to completely erase the contents of your Mac’s startup drive. This can include the current version of the OS, as well as all your personal data, including music, movies, pictures, and apps. Make sure you have a current backup of the startup drive before continuing.
Select the Disk Utility item, and then click the Continue button.
Disk Utility will launch and display the drives and volumes currently attached to your Mac.
In the left-hand pane, select the volume you wish to erase. It will likely be named Macintosh HD if you never bothered to change the Mac’s default name for the startup drive.
With the startup volume selected, click the erase button in Disk Utility's toolbar.
A sheet will display, allowing you to give the volume a name, as well as select a format to use. Make sure the Format drop-down menu is set to OS X Extended (Journaled). You can also enter a name for the startup volume if you wish, or use the default Macintosh HD name.
Click the Erase button.
The drop-down sheet will change to display the erase process. Normally, this is very quick; once the erase process is complete, click the Done button.
You’re finished with Disk Utility. Select Quit Disk Utility from the Disk Utility menu.
The macOS Utilities window will reappear.

Start the Install of macOS Sierra

The startup volume has now been erased, and you're ready to start the actual installation process.

From the macOS Utilities window, select Install macOS, and then click the Continue button.
The installation process will start.

Select the Target Drive for a Clean Install of macOS Sierra

We mentioned earlier that there were two clean install options: to install on the startup drive or to install on a non-startup drive. The two installation methods are about to come together, following a common path.

If you chose to install on a non-startup drive, then you're ready to start the installation process. You'll find the macOS Sierra Installer in the /Applications folder. Go ahead and launch the installer.

If you decided to install macOS Sierra on your startup drive, then you have already erased the startup drive and started the installer, as outlined previously.

We're now ready for both types of installations to follow the same path.

Clean Install of macOS Sierra

The macOS installer has been launched, and the installer window is now open.
Click the Continue button.
The macOS Sierra licensing agreement will be displayed. You can scroll through the document. Click the Agree button to continue.
A sheet will drop down, asking if you have read and agree to the license. Click the Agree button.
The installer will display the default target for the installation of macOS Sierra This is usually the startup drive (Macintosh HD). If this is correct, you can select the startup drive and click the Install button, then go on to step 8.
If, on the other hand, you wish to install on a non-startup volume, click the Show All Disks button.
The installer will display a list of attached volumes that you can install macOS Sierra on; make your selection, and then click the Install button.
The installer will display a progress bar and time estimate for the installation process. While the process bar is displayed, the installer is copying needed files to the target volume. Once the files have been copied, your Mac will restart.
Don’t believe the time estimate. Instead, feel free to go have lunch, enjoy a cup of coffee, or take that three-week vacation you were planning. OK, maybe not the vacation, but do relax for a bit.
Once your Mac restarts, you'll be guided through the macOS Sierra setup process, where you create user accounts, set time and date, and perform other housekeeping chores.

Use the macOS Sierra Setup Assistant to Complete the Installation

Depending on the choice you make here, you'll have slightly different install options going forward. We'll make a note of when the installation process differs as you read on. Make your selection, and click Continue. So far, you've decided on the clean install method to use, erased the target drive, and started the installer. Your Mac has copied the needed files to the target disk and then restarted.

Welcome to macOS Sierra Setup

At this point, you should be seeing the macOS Sierra Setup Welcome screen.
From the list of available countries, select your location, and then click the Continue button.
The setup assistant will make its best guess on the keyboard layout to use. You can accept the suggested layout or select one from the list. Click Continue after making your selection.
Setup can now transfer your old account and user data from a Time Machine backup, a startup disk, or another Mac. In addition, you can transfer data from a Windows PC. You can also forgo transferring any data at this time.
We suggest selecting 'Don’t transfer any information now.' The reason is that after you have macOS Sierra set up and working, you can use the Migration Assistant to bring the older data over if you need to. For now, let's just take care of the basic setup. Make your selection, and click Continue.
You can turn on the Mac’s Location Services, which allows apps to determine where your Mac is located. This can be helpful for applications such as Maps and Find my Mac. Make your selection, and click Continue.
You can choose to sign in with your Apple ID whenever you login to your Mac. This will also sign you into iCloud, iTunes, the App Store, FaceTime, and other services. You can also choose not to use your Apple ID, and sign in to the various services as needed. Depending on the choice you make here, you'll have slightly different install options going forward. We'll make a note of when the installation process differs as you read on. Make your selection, and click Continue.
You'll be presented with the terms and conditions for using macOS Sierra and the other basic OS services on your Mac. Click the Agree button.
A sheet will drop down, asking you to agree again; click the Agree button, this time with feeling.
Next, you'll be asked to set up the administrator’s user account. If you selected the Apple ID option above, you may find that some of the account fields are already filled out. You can treat the partially filled in form as a suggestion to use or replace as you see fit. Enter or confirm the following:
1. Full name
2. Account name: This will be the name of your home folder.
3. Password: You need to enter this twice to verify the password.
4. Password hint: While optional, it’s a good idea to add a hint, just in case you have trouble remembering the password in the future.
5. You can choose to allow your Apple ID to reset your password. This can be a handy fallback should you ever forget your Mac's password.
6. You can also have the time zone automatically set based on the current location.
Enter the requested information, and then click Continue.
If you chose to sign in with your Apple ID, you can perform the next 5 steps. If you chose to skip the Apple ID sign-in, you can jump ahead to step 18.
Once the basic account is in place, you can set up iCloud Keychain. iCloud Keychain is a very helpful service that allows you to sync login and password information from one Mac to other Macs you may use. The syncing is performed through iCloud, and all information is encrypted, preventing prying eyes from being able to intercept and make use of the data.
The actual setup process for iCloud Keychain is a complex one, so we recommend you use the Set Up Later option, and then once you have macOS Sierra up and running, you use the Guide to Using iCloud Keychain article to actually set up the service.
Make your selection, and click the Continue button.
The setup process will offer to keep all of your important files on your Mac safely stored in iCloud, making them available to any device that can access iCloud services. If you would like the files in the Documents folder, and those on your Mac’s Desktop, automatically copied to iCloud, place a checkmark in the box labeled Store files from Documents and Desktop in iCloud. We suggest deferring this option until after you have your Mac set up and you can see just how much data would be involved. iCloud only offers a small amount of free storage space.
Make your selection, and click Continue.
You can have your Mac send Diagnostics and Usage information to Apple to help in finding and fixing bugs. The Diagnostics and Usage data can be controlled from the Security & Privacy preference pane should you change your mind later on. Click the Continue button.

The setup assistant will finish the setup process, and then display your Mac’s desktop. The setup is complete, and you're ready to explore your new macOS Sierra operating system.

Siri

One of the new features of macOS Sierra is the inclusion of Siri the personal digital assistant that has been part of iOS for quite a few years.

If you have encountered any macOS 10.13 High Sierra problems, then this guide should help you, as we have the most common issues, as well as their fixes, so you can have your Mac up and running again as quickly as possible.

It's worth noting that Apple has now released macOS High Sierra 10.13.1, which includes a number of bug fixes that should address some of the problems we've listed below. If you are encountering any problems with macOS High Sierra, we suggest you install 10.13.1 straight away. Read on for a full walkthrough of the process.

However, there have also been reports about a major security flaw has been found in macOS High Sierra, which allows people to log into Macs running the software as an administrator without having to enter in a password.

Because of the potential severity of this flaw, you should make sure you check out our guide on how to change the root password in macOS High Sierra, which walks you through a fix for the problem.

If you’ve encountered a macOS High Sierra problem that we haven’t covered, follow and tweet us and we’ll do what we can to find a solution.

From macOS High Sierra installation problems, to security risks and issues with making apps work, read on to find out how to fix the most common macOS High Sierra problems.

How to download macOS High Sierra 10.13.1

As we mentioned earlier, Apple has now released macOS High Sierra 10.13.1, an updated version of High Sierra that includes a number of bug fixes and security updates that should fix a number of problems.

To update High Sierra to 10.13.1, click on the Apple menu and select 'App Store'. From the App Store, click on the 'Updates' tab, and you should see 'macOS 10.13.1 Update 10.13.1' listed. Make sure you've saved your files, and backed up any irreplaceable files, then click on 'Update'.

You can also download the macOS High Sierra 10.13.1 update from Apple's support site.

macOS High Sierra won’t download

A common macOS High Sierra problem at the moment is that macOS 10.13 begins to download, but then it pauses along with an error message that says “macOS High Sierra download has failed”.

Another common macOS High Sierra download problem shows the error message: “Installation of macOS could not continue. Installation requires downloading important content. That content can’t be downloaded at this time. Try again later.”

There are a few reasons why you may get this problem. It may be because a lot of people are trying to download macOS High Sierra at the same time. If this is the issue, try again later to see if the download now works.

It may also be worth switching from a Wi-Fi connection to an Ethernet cable, to ensure your internet connection is as reliable as possible.

If you’re still having problems downloading macOS High Sierra, try to find the partially-downloaded macOS 10.13 files and a file named ‘Install macOS 10.13’ on your hard drive. Delete them, then reboot your Mac and try to download macOS High Sierra again.

If you still have a problem downloading macOS High Sierra, open up the App Store, click ‘View My Account’ and see if there is anything in the ‘Unfinished Downloads’ section. You may be able to restart the download from there.

Finally, try logging out of the Store to see if that restarts the download.

macOS High Sierra install problems

If you’re having problems installing macOS High Sierra, first make sure you check out our how to download and install macOS 10.13 High Sierra guide, which will take you through the steps you need to take to safely install the new operating system.

If the macOS High Sierra download completes, but there’s no prompt for the installation to continue, then search in your Mac’s application folder for a file called 'Install macOS 10.13'. Double-click the file to begin installation.

You also need to make sure that there is enough hard drive space on your Mac, otherwise the macOS High Sierra install will fail.

To fix the macOS High Sierra problem where the installation fails due to low disk space, restart your Mac and press CTL + R while it’s booting to enter the Recover menu. Select ‘Disk boot’ to boot normally, then remove any files you no longer need.

If you’re struggling to free up disk space, look out for hidden Time Machine files that may be taking up large amounts of space.

Once you have freed up enough space, retry the installation.

If macOS High Sierra encounters a problem at the end of installation, and then shows an error message, restart your Mac and press Command + Option + R on your keyboard while the Mac boots to start up the recovery system over the Internet. You can also try Shift + Option + Command + R.

If your Mac continues to fail to boot, follow Apple’s instructions on creating an external Mac startup disk.

It may be worth restarting your Mac in Safe Mode, then trying to install macOS 10.13 High Sierra from there to fix the problem.

macOS High Sierra won't install, shows 'osinstall.mpkg appears to be missing' error message

Quite a few people have contacted us saying that their macOS High Sierra installation fails with an error message that states 'the path /system/installation/packages/osinstall.mpkg appears to be missing'.

To fix this, you will need to install macOS High Sierra from a USB drive. First, download the installer by opening up the App Store and go to the 'Featured' section. High Sierra should appear towards the top of this section. If you can't find it, use the search box, or click the link above.

Once macOS High Sierra is downloaded, press Command + Q on your keyboard to quit the installation process. This will keep the macOS High Sierra installer app installed on you Mac in the Applications folder.

Next, you'll need a USB drive over 8GB in size. If you don't have one, check out our list of the best USB drives.

Make sure any files or data on the USB drive are backed up onto another device, as the installation process will format the drive.

You'll now need the free Install Disk Creator app. Download and install the app, then connect your USB drive to your Mac and run the app. In the main menu there will be a drop down list box titled 'Select the volume to become the installer'. Select your USB drive.

Underneath that, you'll see a box that says 'Select the OS X installer'. macOS High Sierra should already be selected, but if not, click on the box, then select the installer you just downloaded.

Finally, click 'Create installer' and follow the instructions. When that's done, restart your Mac and hold down the Option key while it starts. This will open up the boot manager. Make sure you select your USB drive, then start the installation process.

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macOS High Sierra shows 'unable to unmount volume for repair' error message

Some people are encountering a problem while installing macOS High Sierra where an error message saying 'unable to unmount volume for repair' appears.

If you have encountered this problem, first make sure you have a recent Time Machine backup of your drive. Check out our ultimate guide to backing up your Mac before continuing, to make sure you have a backup.

Also ensure that the Time Machine backup is saved to a separate hard drive (or USB stick) from the drive you wish to unmount.

Now, restart your Mac and boot into internet recovery mode by holding down Option + Command + R on your keyboard as your Mac starts. Now, open the Terminal and type:

Make a note of the disk number of the drive you need to unmount. Next, type into the Terminal:

Where we've put <number> enter the correct number for the disk you wish to unmount. Double check this is the correct disk if you're not completely sure, then press Enter.

The disk will now be unmounted. To continue to install macOS High Sierra, open the Diskutil app within recovery mode and reformat the unmounted drive to APFS.

Mac Os High Sierra 10.13.6

Please note that reformatting the disk will remove all data from the drive. This is why it is so important to make sure you have a Time Machine backup before you complete this step.

Next, complete the installation of macOS High Sierra, and restore your files using the Time Machine backup when prompted.

Mac won’t start after installing macOS 10.13 High Sierra

If you've installed macOS High Sierra, but your Mac won't start, then restart your Mac and hold down Command, Option, P and R, which will reset the NVRAM (non-volatile RAM).

Hold the keys down until the computer restarts and you hear the startup chime for the second time. Release the keys after you hear the second startup chime. The PRAM will be reset as well.

While in Safe Mode, run Disk Utility to see if that will fix any macOS High Sierra boot problems.

For other ways to fix a Mac that won't start, check out our guides how to Use OS X boot options to troubleshoot your Mac and how to fix a Mac that won't start.

macOS 10.13 High Sierra keeps logging you out

Some people have been reporting a problem where macOS High Sierra keeps randomly logging them out of their Mac.

It’s annoying, but the good news is there’s a number of fixes for this High Sierra problem.

First of all, go to Preferences > Security & Privacy > Advanced, and uncheck the box where it says ‘Log out after… minutes of inactivity’.

In the Security & Privacy window, click ‘General’ and uncheck the box ‘Require password after sleep or screen saver begins’. Remember the security implications of this, however.

If macOS High Sierra is logging you out while you’re using Chrome, try opening up the Chrome web browser and going to the settings. At the bottom of the screen click ‘Advanced’, then turn off hardware acceleration.

A Guest User account appears after installing macOS 10.13 High Sierra

Some people have noticed that a Guest Account has suddenly appeared in their login screen after installing macOS 10.13 High Sierra.

This icon often has graphical artifacts that accompany the Guest User account. This appears even if you have not enabled guest accounts.

To solve this problem, open the Terminal and type in the following command:

Press 'Enter' on your keyboard, then enter in the password you use to log in to your Mac as an administrator.

Now, restart your Mac and the icon will be gone.

macOS 10.13 High Sierra Wi-Fi and internet problems

There have been issues reported of people experiencing problems connecting to the internet and Wi-Fi networks since upgrading to High Sierra.

If you're encountering a Wi-Fi problem, first try turning your Wi-Fi adaptor off and on again. To do this, click on the Wi-Fi status icon in the Menu bar, then select 'Turn Wi-Fi Off'. Wait a few seconds, then select 'Turn Wi-Fi On'.

If that doesn't work, you may need to change the name of the Wi-Fi network, and the password. To do this, you'll need to log into your Wi-Fi router. The method for doing this will vary depending on the make of router you have, so check the manual for your device before you begin. Also, making sure your SSID (the name of your Wi-Fi network) is not hidden can also help to fix this problem.

One reader contacted us with this problem, and they fixed it by uninstalling a VPN app they were using. This may be worth trying as well.

Apps won't work in macOS 10.13 High Sierra

Another common macOS High Sierra problem is that some apps no longer work once you've upgraded to the new operating system.

This is especially common if you are using older programs. If you find that an app you used to use no long works in macOS 10.13 High Sierra, the first thing you should do is check to make sure have downloaded and installed any recent updates to the software.

You should also check the website of the software. This may contain updates or advice for getting your hardware to run.

If your software is very outdated, it may no longer be compatible with macOS High SIerra. If that's the case, you should consider buying a newer version, or finding an alternative.

What apps don't work with macOS 10.13 High Sierra?

Here's a list of some of the apps that don't currently work on macOS High Sierra. If you use them, consider upgrading to a newer version.

Final Cut Pro X 10.3.4: Update to the latest version of Final Cut Pro
Motion 5.3.2: Update to the latest version of Motion
Compressor 4.3.2: Update to the latest version of Compression
Logic Pro X 10.3.1: Update to the latest version of Logic
MainStage 3.3: Update to the latest version of MainStage
Adobe Photoshop CS4: Adobe has said it is not making sure this app is working in High Sierra, so best upgrade to the latest version to make sure.

Mac runs slowly after macOS High Sierra upgrade

If your Mac is running noticeably slower after upgrading, there are a number of things you can try to speed up macOS High Sierra and fix any problems that are slowing it down.

First of all, try restarting your Mac to see if that helps. If it doesn't, force-quit any apps that appear to be taking up a lot of RAM. You can identify these by using Activity Monitor (in /Applications/Utilities) to establish what apps and processes are using up the most CPU or RAM. Its CPU tab lists active processes, with a real-time view of what's going on.

To force-quit an item, click it in the Activity Monitor list, click the X at the left of the toolbar, then confirm you want to force-quit.

Also delete the cache. Open the Finder window, select 'Go' from the top menu and select 'Go to Folder'.

In the text box that appears type /Library/Caches

Remove the data from inside every folder. Now repeat the process with /Library/Caches (without the symbol). Running the Repair Disk tool from within Disk Utility may also help, and for more solutions check out our guide.

macOS High Sierra battery problems

Has the battery life of your MacBook become shorter since installing macOS High Sierra?

This is a common complaint at the moment, so you can check to see what's causing the battery drain in macOS High Sierra by opening up the Finder, then going to Applications > Utilities > Activity Monitor > Energy.

From there you'll see a graph with how much energy the programs you are running are taking up. If it's a lot, you may want to check to see if there is an update to make the software run better in macOS High Sierra.

You may also want to uninstall the program and use an alternative.

Turning off location services, or stopping unnecessary animations and graphical effects in macOS High SIerra can also help prolong battery life.

For more advice, visit our how to improve your MacBook's battery guide, and watch our video below.

Mac has missing disk space after upgrading to mac OS High Sierra

Mcculloch pro mac 555 parts. A macOS High Sierra problem some people have reported encountering is that after the upgrade they have noticed their hard drives are showing a lot less free space than before.

Some users have identified the '/.MobileBackups ' folder as being the culprit. This is a folder that is no longer used in High Sierra, but it can use up a lot of space. Thankfully, it can be removed without causing any issues. First, open up the Terminal and type in:

This will move the MobileBackups folder to your desktop. Now, drag and drop the folder into your Trash, then empty it. You should now find you have a lot more disk space available.

macOS High Sierra password security problems

We recently reported that there is a major flaw in macOS High Sierra puts your passwords at risk. The exploit was discovered by Patrick Wardle, chief security researcher at ‎Synack, and also affects earlier versions of macOS, and it can be delivered by an unsigned app.

Apple should be working on a fix to this rather serious problem, but for now you should be extra careful when installing apps, and make sure that you only download them from trusted sources such as the App Store. We will update this section when Apple releases an official fix.

No Mail notifications in macOS High Sierra

Some people are reporting a problem in macOS High Sierra where notification banners are no longer showing when they receive new emails.

To fix this problem go to System Preferences > Notifications and changing the alert style from 'Banner' to 'Alert' or 'None'. Next, change it back to 'Banner' and banner notifications should now work again.

If that doesn't help, restart into safe mode (hold down the Shift key on your keyboard when your Mac is starting up to enter safe mode), and try sending a test email to yourself and see if the notifications work. If they do, restart into normal mode and try sending a test email again.

macOS High Sierra does not delete messages from server

If you have tried to delete an email but received an error message that states: 'The IMAP command UID COPY (to Trash) failed for the mailbox INBOX with server error: UID COPY Command is not valid in this state', you may need to delete the email account from the Mail app, then add the email account manually.

This seems to be an error that happens a lot with Yahoo Mail accounts in High Sierra. Hopefully Yahoo will come up with a permanent fix for this problem.

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How Big Is Mac Os High Sierra The Missing Manual Pdf Install Free

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