Prevent App Verification Mac High Sierra
When you install macOS High Sierra with flash storage, that volume is automatically converted to the all-new APFS (Apple File System). Apple doesn't require your consent: want it or not, the HFS+ volume is converted to APFS, a transition that you cannot stop – at least according to Apple. But there is one thing that the tech giant forgot about: the developer community, which always quickly reacts to this sort of news with a workaround. And so if you don't want the SSD to be converted into APFS, there is a way to stop the process.
Why Skip APFS?
Apr 30, 2018 Among many things that automatically run when you log into macOS High Sierra, some apps consume too much memory. Instead of just cleaning cache items, you may wonder how to fix the mentioned issue. You can manage to remove app from Mac, by choosing Apple Menu System Preferences, and then clicking on Users & Groups. Oct 17, 2017 After upgrading to High Sierra, the system throws up what looks like a FileVault icon along with the words, 'Verifying file name' before playing back any downloaded video files. This verification can take as many as a few minutes to occur before the app (in this case, VLC) can play back the file. In essence, High Sierra took what was good with Sierra and developed it into a more comprehensive software. High Sierra emphasizes the already-existing benefits of MacOS previous system, Sierra. There are few bells and whistles, but the changes are noticeable and positive. The Apple file system is the most significant feature it brought. Jan 26, 2017 The difference is, once you apply these Terminal commands, you will still get a warning from the macOS security system that said; “The App” can’t be opened because the identity of the developer cannot be confirmed. Just like the screenshot below for example when I try to Install the “Handshaker” app. So, don’t worry just click OK to close it then go to System Preferences Security.
Fusion Drives and traditional hard disk drives (HDDs) aren't converted during the installation process for macOS High Sierra, just like any non-Mac volumes, but SSDs are. APFS brings improvements to speed and also comes with strong support for encryption since it was built with encryption at its core, but you may have your own reasons for preserving the old file system – maybe you don't use Time Machine and want the data intact on the internal volume.
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If your Mac startup drive meets the criteria, the conversion to APFS is – theoretically – unstoppable, but there are still ways of skipping the conversion process, ensuring the SSD remains in the older HFS+ format. There are two methods to avoid the process, and we don't recommend doing so at all, especially not if you’re a novice Mac user, but if you are determined to stop the HFS+ to APFS conversion, then use one of the options described below.
How to Prevent Automatic Conversion to APFS
Use an External Volume
Use an external drive as the target for the macOS High Sierra install. Apple's new file system currently supports internal SSDs for automatic APFS conversion, so even if the drive is an SSD the external volume won't be converted, as such the existing formatting of the drive is retained during the installation process. After finishing the upgrade use cloning software such as Carbon Copy Cloner to create an exact copy of the external drive on the internal drive. Even Disk Utility's Restore feature can be of great help here.
Use Startosinstall
Unpacking the macOS High Sierra installer will unveil many ‘secrets’ that Apple is hiding away from the average user, and the startosinstall is just one of them. This utility will help you skip the APFS conversion faster than the first method, since the command line you'll enter into Terminal will instruct the installer to skip that specific step, eliminating the need to create a clone and move it to another drive. Follow the steps below:
- Download the macOS High Sierra installer app from the App Store.
- Open the Terminal app.
- Copy and paste the following command:
- Press enter, and start the upgrade process. Enter the administrator password if prompted, and hit the return key.
- Accept the macOS High Sierra license terms by entering a capital “A” at the prompt.
You'll then see Terminal counting up to one hundred (representing a percentage) as it copies over the files that the installer needs. Once done, your Mac will reboot and the actual installation process starts without converting the existing HFS+ files system to APFS.
/Applications/Install macOS High Sierra.app/Contents/Resources/startosinstall –converttoapfs NO
After the upgrade is complete, you can always check whether the startup drive has been converted or not.
How to Force APFS Conversion
The startosinstall utility also allows you to force an APFS conversion, except for those storage disks that don't support the new file system. As of writing, Fusion Drive doesn't support APFS, but Apple says that this will change soon. You can convert your HDD to APFS, but it isn’t recommended because, as Apple highlighted during the keynote announcing the new file system, this system was designed for SSDs and not for HDDs.
Still, if you do want to take the step regardless – maybe you've changed your mind and now want to upgrade to the new file system – then open Terminal and paste in the following command:
sudo /Applications/Install macOS High Sierra.app/Contents/Resources/startosinstall -applicationpath /Applications/Install macOS High Sierra.app -converttoapfs YES
Press enter, and let the utility do its job. You'll see Terminal copying the required files and, when done, it will restart your Mac and complete the macOS High Sierra installation, with the startup disk now converted to APFS.
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Check compatibility
You can upgrade to macOS High Sierra from OS X Mountain Lion or later on any of the following Mac models. Your Mac also needs at least 2GB of memory and 14.3GB of available storage space.
MacBook introduced in late 2009 or later
MacBook Air introduced in late 2010 or later
MacBook Pro introduced in mid 2010 or later
Mac mini introduced in mid 2010 or later
iMac introduced in late 2009 or later
Mac Pro introduced in mid 2010 or later
To find your Mac model, memory, storage space, and macOS version, choose About This Mac from the Apple menu . If your Mac isn't compatible with macOS High Sierra, the installer will let you know.
Make a backup
Before installing any upgrade, it’s a good idea to back up your Mac. Time Machine makes it simple, and other backup methods are also available. Learn how to back up your Mac.
Get connected
It takes time to download and install macOS, so make sure that you have a reliable Internet connection. If you're using a Mac notebook computer, plug it into AC power.
Download macOS High Sierra
For the strongest security and latest features, find out whether you can upgrade to macOS Catalina, the latest version of the Mac operating system.
If you still need macOS High Sierra, use this App Store link: Get macOS High Sierra.
Begin installation
After downloading, the installer opens automatically.
Click Continue and follow the onscreen instructions. You might find it easiest to begin installation in the evening so that it can complete overnight, if needed.
If the installer asks for permission to install a helper tool, enter the administrator name and password that you use to log in to your Mac, then click Add Helper.
Prevent App Verification Mac High Sierra Vista
Allow installation to complete
Please allow installation to complete without putting your Mac to sleep or closing its lid. Your Mac might restart, show a progress bar, or show a blank screen several times as it installs both macOS and related updates to your Mac firmware.
Learn more
Prevent App Verification Mac High Sierra 2017
- If you have hardware or software that isn't compatible with High Sierra, you might be able to install an earlier macOS, such as Sierra or El Capitan.
- macOS High Sierra won't install on top of a later version of macOS, but you can erase your disk first or install on another disk.
- You can use macOS Recovery to reinstall macOS.