I erased my internal ssd in a Mac OS Extended format but my backup ssd (time Machine ssd) is in a APFS format.
MacBook Pro 2017 Touch Bar
How can i recover my system back if possible or reformat the internal drive from Mac OS Extended to APFS format ?
Time machine backups hold a database of backed up files, in a form that is not bootable. Recent versions do not even contain the invariant portions of MacOS at all.
To recover after the main drive is erased:
First, re-install MacOS:
How to reinstall macOS - Apple Support
Then at first run, DO NOT create a new User-id, tell it to use the old one from your backup drive.
This special case of Migration Assistant is sometimes referred to as "Setup Assistant".
Time machine backups hold a database of backed up files, in a form that is not bootable. Recent versions do not even contain the invariant portions of MacOS at all.
To recover after the main drive is erased:
First, re-install MacOS:
How to reinstall macOS - Apple Support
Then at first run, DO NOT create a new User-id, tell it to use the old one from your backup drive.
This special case of Migration Assistant is sometimes referred to as "Setup Assistant".
Could Not Mount Time Machine External Drive (APFS)
