Can't back up with Time Machine: "Time Machine could not create a local snapshot to back up from."
I know this question has been asked on this forum and others, but I have tried everything recommended elsewhere and nothing is working.
Every time I attempt to backup, time machine fails to do so and delivers the notorious message:
"Time Machine could not create a local snapshot to back up from."
-> Have installed lasted version of OS software.
-> Have tried using two different WD external drives, one brand new and empty (2 TB), the other was the previously well-functioning backup disk for Time Machine, also 2TB and only about 60% full.
-> Have removed and replaced Mac HD from spotlight to re-index spotlight (as suggested in another post)
-> Have completely erased and re-tried brand new drive multiple times
I need to get hardware repaired on the computer asap, and I need a fresh backup as I have done a great deal of work since the last backup.
Please help! Thank you.
MacBook