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Should I erase the macOS base system?
Answer: A: Answer: A: There is no need to erase The Base System. A new installation will over write it.
How do I do a clean install of Mac OS X on a USB drive?
Create a bootable macOS installer
- Download macOS High Sierra from the App Store.
- When it’s finished, the installer will launch.
- Plug in the USB stick and launch Disk Utilities.
- Click the Erase tab and make sure Mac OS Extended (Journaled) is selected in the format tab.
- Give the USB stick a name, then click Erase.
How do I remove OS X base system from desktop?
- Shut down the computer.
- Locate the following keys on the keyboard: Command, Option, P, and R.
- Turn on the computer.
- Press and hold the Command-Option-P-R keys.
- Hold the keys down until the computer restarts and you hear the startup sound for the second time.
- Release the keys.
How can I get my OS X base system unlocked?
Hold command-option-r at boot to start in Internet recovery mode. Select your wifi then you should see a spinning globe while the recovery utility downloads. Once the recovery screen comes up start Disk Utility and go to the erase tab. Then select the drive it self at the very top of the left column, then format it to Mac OS Extended (Journaled).
How big is the OS X Base System Disk?
Actually, BaseSystem.dmg is compressed down to only 451MB (at least in OS X v10.7.0). Also, the volume naming is somewhat inconsistent. You’ve got /dev/disk1s3 named “Recovery HD”, but for some reason it’s mounted as “/Volumes/Image Volume” in recovery mode.
Why is my OS X base disk locked?
In the Disk Utility, the options for erase, restore and unmount are all unavailable (see picture 2), I imagine that’s because you normally cannot do any of these on the OS X Base System disk. This disk is also locked, so I cannot re-install High Sierra (see picture 3).
How can I boot OS X on a flash drive?
1. Get a USB flash drive 16gb or larger 2. Get the OS installer of your choice 3. Use ONE of the following free apps: “Boot Buddy” or “DiskMaker X” or “Install Disk Creator” 4. Use the app to create a bootable USB flashdrive version of the installer 5.