Continuing to use Time Machine to backup External hard drives from macOS 10 with macOS 11
Hi all,
I have recently upgraded from a White MacBook late 2007 (macOS 10.7.5) to a MacBook Air M1 2020 (macOS 11.2.3).
I have several external usb hard drives. For each drive, I have a dedicated Time Machine backup hard drive. When a particular drive and its backup are mounted to the new MacBook Air, (and ‘use backup disk’ is selected) the Time Machine App doesn’t show the historical backup. It is as if it doesn’t recognise the backup. I could just back up the drive and start from scratch now, but before I do this, I’d like to know if it is possible to fix this so that I can continue using the old backups rather than start a fresh backup!
Thanks
MacBook Air 13″, macOS 11.2