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- #CLEAN MAC OS SIERRA INSTALL INSTALL#
- #CLEAN MAC OS SIERRA INSTALL PASSWORD#
- #CLEAN MAC OS SIERRA INSTALL FREE#
Skip signing in with an Apple ID–select ‘Set Up Later’. Transfer Information to This Mac: select Don’t transfer any information now. Settings relevant to your location, which can be accepted or customised. When installing Catalina, the installer will offer language and input.
#CLEAN MAC OS SIERRA INSTALL PASSWORD#
The drive encryption password again (once macOS is installed, this will no When the computer reboots as part of the installation, you will need to enter Password you used when formatting the drive.
#CLEAN MAC OS SIERRA INSTALL INSTALL#
#CLEAN MAC OS SIERRA INSTALL FREE#
To erase free space enter diskutil secureErase freespace 0 volumemountpoint, where volumemountpoint is the mount point noted above,Į.g.: diskutil secureErase freespace 0 /Volumes/Ardbeg.Use diskutil list to list available volumes, and note the mount point of.In Recovery mode, go to Utilities > Terminal.If you nevertheless want to erase free space: Unless you are setting up a hardened machine where an attacker may have physicalĪccess, it’s probably safe to skip this step. Even then, though, because of the wayĭata are written to SSDs, the original data will quickly become unreadable so However, if reusing a drive that was previously used unencrypted, it mayīe useful to overwrite the free space.
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The free space on the disk as any data written there will have been encryptedĪnyway. For a drive that has previously been encrypted, it is not necessary to overwrite