Pre-boot volume is a space for the operating system prior to installation. The volume acts as a space or a medium of communication for installation between the macOS High Sierra and the new APFS (Apple File System).
The High Sierra installer suddenly appeared in the Applications folder, and was NOT directly requested through the App Store (that Mac user account does not have local access to the App Store app). The High Sierra installer downloaded because it was allowed by the settings in the App Store pref pane. To get the full installer: Method 1. Start the installer, which will download the missing files; Quit when prompted to restart; Copy (or move) the downloaded files from /macOS Install Data to a new SharedSupport folder inside /Applications/Install macOS High Sierra.app/Contents/. If you have hardware or software that isn't compatible with macOS Sierra, you might be able to install the previous version, OS X El Capitan. MacOS Sierra won't install on top of a later version of macOS, but you can erase your disk first or install on another disk.
The error “Could not create a Pre-Boot volume for APFS install” occurs when a Mac user tries to erase their existing macOS and reinstall macOS High sierra due to various reasons like up-gradation etc.
If you find the error on the screen saying “Could not create a Pre-Boot volume for APFS install” during the reinstallation process of High Sierra, it is important to know that this error not only affects the reinstallation but also the data present in the volume. During this reinstallation scenario, your data present on macOS is inaccessible.
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Firstly, let us understand why high sierra installation is stopped, and how to fix this error.
What is the error about? Reasons for “Could not create a Pre-Boot volume for APFS install”
The error “Could not create a Pre-Boot volume for APFS install” emphasizes that APFS is not recognizing the Pre-Boot volume which is required to initiate the re-installation process.
The Pre-Boot System will not be able to install macOS High Sierra due to the APFS, this usually happens because the Apple File System fails to synchronize with Pre-boot volume which is the medium for installation (Pre-Boot Execution Environment). This causes a scenario called Block Non – Synchronization. Due to this, the macOS High Sierra fails to reinstall and the error is shown “Could not create a Pre-Boot volume for APFS install”. This error affects the data present in your mac volume. All the data present in the volume is lost or beyond access. Solution for 'Could not create a Pre-Boot volume for APFS install'
In order to fix the error and successfully install High Sierra. Follow the below procedures to fix the error. But in any of these situations, your data existing on the drive is prone to loss as the inevitable solutions involve erasing of Mac volume.
1. Deletion of volume and Reinstallation of macOS High Sierra
Deletion of the volume and reinstallation could solve the problem of ' Could not create a Pre-Boot volume for APFS install' error
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By deleting the drive, you remove the APFS system which is causing the error so that you are able to reinstall macOS. If the method above doesn't work, try the next one.
Have you lost important files due to the deletion and reinstallation of the macOS High Sierra? Remo Recover is programmed with an advanced scan engine that can scan sector by sector in order to retrieve all the data lost during the reinstallation process making the recovery commendable. It can easily recover data, SSD, USB, external, SD, and removable drives.
2. Directly enter Internet recovery mode (Online software solution by mac)
Additional Information: Sometimes your APFS formatted disk could face issues due to corruption. However, you can recover data and fix the APFS disk on your computer. Click on the given link to know more.
Recover Data lost during couldn't Pre-Boot Volume for APFS error:
Deletion of volume results in the deletion of your data present in the macOS. Both the above methodologies can fix the error 'Could not create a Pre-Boot volume for APFS install'. However, if the user doesn’t have a backup of the existing data on Cloud or a backup drive, then the data existing on your Mac hard drive is lost due to the re-installation process.
You can easily recover your lost data with Remo Recover Mac tool. The data can be recovered with a few clicks with Remo recover because the data which is inaccessible or lost is not completely erased and still resides on the logical memory until the respective place is overwritten.
Remo Recover can recover more than 300 File types. Remo has a very simple user interface which will make a novice user comfortable with the application. Compatible with all mac file systems like HFS, HFS+, HFSX, and APFS.
The above article on 'Could not create a Pre-Boot volume for APFS install' emphasizes the solution for the error and the appropriate data recovery methodologies through which any novice mac user can approach this scenario. However, it is recommended to take a backup prior to performing the re-installation of the macOS. If you happened to not have a backup, Remo Recover comes in handy for data recovery.
macOS Sierra is a fantastic update arriving from Apple to make us love our Macs even more. It has plenty of new features, and also has the same easy clean install and upgrade flow as did the previous OS.
LEARN MORE: How to Clean Install the macOS High Sierra?
Note, that getting an upgrade is the easiest way of installing the new macOS. It saves all your personal files, apps and user data, while a so-called clean install of Sierra will erase all data on the startup drive and replace it with a clean copy of OS. But, if you like an idea of giving your Mac a fresh start with a new macOS and nothing else, a clean install is the right option for you.
Also, in case you’ve noticed that with time your Mac is running slower, it has unusual startup or shutdown issues and crashes, a clean install may be a good way to get back the speed and fix the problem.
First of all, make sure that your Mac is able to run MacOS Sierra.
Then, you should prepare your Mac for the installation:
Clean Install macOS Sierra on Your Mac’s Startup Drive
If you're going to perform a clean install on the startup drive, you need to backup your data, create a bootable copy of the installer, and, finally, boot from the bootable installer. So, let us begin.
Step 1: Clean up your Mac
To make sure Sierra has no troubles installing and works fine after, you need to get rid of system junk on your Mac first. You could clean it up manually, but using a cleaning app like CleanMyMac X will save you hours on that. Junk removal with CleanMyMac takes only a few minutes. Download CleanMyMac for free, launch it, click Scan, and then Clean. Now you’ve got plenty of free space and your Mac is free from system trash.
Step 2: Back up your dataMac Os Install Disc Download
Note: A clean install of macOS Sierra on the startup drive completely erases all data Mac app to open wmv files. on that drive: all your files and documents, including music, movies, pictures, and even apps.
So, If you skip this step, you wouldn’t be able to recover your data if something goes wrong.
To backup your Mac:
Step 3: Clean Install macOS Sierra on your startup disk
1. Create a bootable flash drive with macOS Sierra.
First, make sure your USB flash drive is formatted and named as “Untitled”.
Now, your USB flash drive is ready.
Mac Os 10.12 Sierra Download
Also, you can follow the instructions from an Apple article on how to create bootable installer.
2. Plug in the bootable macOS Sierra installer USB drive to your Mac.
3. Restart your Mac while holding the Option key or Cmd+R. Make sure to keep it pressed! 4. When Mac restarts, you’ll see the macOS Startup Manager with a list of bootable devices that your Mac can start up from. 5. Use the arrow keys to choose your USB drive with macOS Sierra installer. Press Enter. 6. Select Disk Utility. 7. In the window, at the top of the left bar, select your Mac’s Main Drive (it looks like a MacintoshHD). 8. Select the Erase tab located next to the First Aid button at the top. 9. Near the center of the window, select the Format drop-down list and select Mac OS X Extended (Journaled) type. 10. Click Erase (Note: this will erase all your data from your main drive!) and give the drive some time to format. 11. When it’s done, close Disk Utility and select “Install macOS” from the menu. 12. Select your main drive and install the new macOS Sierra 10.12.
Follow these Sierra install instructions and enjoy your newly clean-installed macOS Sierra.
Clean Install on a Non-Startup Drive
This type of clean install doesn't require you to make a bootable copy of the macOS installer, since you can run the installer directly from your Mac’s startup drive. But you need to have another hard drive or volume that you can use for installing macOS.
So, this is the easiest way to clean install macOS 10.12. Simply use an extra drive or volume (it doesn’t have to necessarily be empty already, you just need to be fine with it being erased) and install Sierra there.
Step 1: Erase your non-startup drive
If your non-startup drive has any other Mac OS, erase it before installing Sierra. If the target drive only has personal data on it, or is already empty, you can skip the erase process.
Install Mac Os High Sierra
To erase the non-startup drive, use a Mac's Drive Using Disk Utility (OS X El Capitan or later) How to sync apps from iphone to itunes mac.
After the non-startup drive is erased, you can start the install process.
Step 2: Download the macOS Sierra Installer from the Mac App Store
When the macOS download completes, it will automatically launch the installer. Quit the macOS Sierra Installer app without performing the installation. You'll find the macOS Sierra Installer in the /Applications folder.
Step 3: Start the Installation of macOS Sierra on the Non-startup driveApps Failed To Install Mac Os Sierra 10.13
Apps Failed To Install Mac Os Sierra Pro
Enjoy your fresh, clean-installed macOS Sierra.
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