Time Machine not backing up - Backup Disk Not Available

[scouser75]

Hi Guys,

As the title says, I'm running Sequoia and am having an issue where Time Machine just will not recognise my HD.

The disk shows on my Desktop and I can open it to see previous backups, but when I try and back up it fails and I see the following message. I've removed the HD and reconnected. I've shut down and restarted. But nothing works.

How can I fix this please?

 

[BrianBaughn]

Did you try running First Aid on the volume with the Disk Utility app? It might take a while depending on how many snapshots it has to check…and what type of drive it is.

 

[scouser75]

Thanks Brian. I'll give this a try now.

 

[scouser75]

I ran first Aid and still no good.

I've searched online and can't find find any solutions. Really don't want to wipe the HD and start from scratch.

 

[scouser75]

I think I may have fixed it.

I simply removed the disk from Time Machine in settings and re-added it.

Now 🫰

 

[scouser75]

Grrrrrrr! And it's doing it again. And this time, removing and reading doesn't work either.

I really hate to be one of those people who complain about the way things just no longer work on Apple devices, but I really am finding this kind of stuff on both my Mac and iPhone.

I might just move back to CCC.

 

[MarkC426]

What sort of disk is it…?
I found a bus powered drive was problematic (in Sonoma), backups where not accessible from the TM gui, but where from Finder.
So changed to a powered one instead, which works fine.

 

[scouser75]

Hi Mark, thanks for your reply.

It's a USB Lacie drive, connected via USB A using Sequoia.

I removed the drive and re-added and that again has done the trick. I just dont understand why I have to do this every time.

 

[MarkC426]

Hi Mark, thanks for your reply.

It's a USB Lacie drive, connected via USB A using Sequoia.

I removed the drive and re-added and that again has done the trick. I just dont understand why I have to do this every time.

Yeah another macOS annoyance, works one minute then not…. 🥴

Maybe something here to try

Time Machine forgets disk, does not execu… - Apple Community

discussions.apple.com

 

[scouser75]

Yeah another macOS annoyance, works one minute then not…. 🥴

Maybe something here to try

Time Machine forgets disk, does not execu… - Apple Community

discussions.apple.com

Hi Mark sorry for the delayed reply. I didn't realise I'd been signed out of MR.

And thanks for the helpful link. I managed to get it sorted but am certain it'll be the same issue in a few weeks when I backup again.