Mac Re-install the OS: Difference between revisions
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You can preserve the current name, and choose a format: OS X Extended (Case-sensitive, Journaled) -> Erase. | You can preserve the current name, and choose a format: OS X Extended (Case-sensitive, Journaled) -> Erase. | ||
==Adding a new volume to the container== | |||
Apple File System (APFS) is preferable, as it's the newest and optimized for SSDs. | |||
==Installation== | |||
Then go back to OS X Utilities -> Reinstall OS X. | Then go back to OS X Utilities -> Reinstall OS X. | ||
Revision as of 21:22, 25 September 2018
External
Internal
Re-install with Data Deletion
El Capitan: Command + R while restarting.
Other: Command + Option + R while restarting.
OS X Utilities -> Disk Utility
First delete the partition from Disk Utilities, then "Reinstall OS X". Reinstalling without explicit deletion will upgrade and preserve the data.
Local the drive you want to erase (usually it's the only one, and it's named "Macintosh HD".
Erase "Macintosh HD"?
You can preserve the current name, and choose a format: OS X Extended (Case-sensitive, Journaled) -> Erase.
Adding a new volume to the container
Apple File System (APFS) is preferable, as it's the newest and optimized for SSDs.
Installation
Then go back to OS X Utilities -> Reinstall OS X.
The computer must be connected to the Internet (wire or wireless): Utilities -> Network Utility.