Time Machine won't recognize existing backup

[rendezvouscp]

I'm having a perplexing issue with Time Machine. Time Machine (the app) recognizes all the backups made to its drive; however, System Preferences doesn't recognize the last backups and won't make automatic backups to the drive. When I try to force a backup, it starts an entirely new backup (as in, separate folder and the whole system).

I just want Time Machine and System Preferences to recognize the backup that I've been running for weeks. Any suggestions? All are welcome; thanks in advance.
-Chasen

 

[srogers1]

Same problem

After a trip in to Apple for repairs (don't know if that's significant or a coincidence) Time Machine won't recognize the backups on the backup volume. At first it said that it couldn't mount the backup volume when it's right there on the desktop. So I re-selected it as the backup volume - now it says there's not enough space on the drive - i.e. it's trying to start a whole new backup set from scratch.

I ran Disk Utility on the Time Machine drive - it says it's fine. I'm stumped for anything else to try.

 

[srogers1]

Found my problem

The Time Machine backups are paired with the host by MAC address, so if the logic board is changed, Time Machine thinks you have a new computer and wants to start a new backup set. It's fixable:

http://www.macosxhints.com/article.php?story=20080128003716101

 

[stridemat]

I'm having a perplexing issue with Time Machine. Time Machine (the app) recognizes all the backups made to its drive; however, System Preferences doesn't recognize the last backups and won't make automatic backups to the drive. When I try to force a backup, it starts an entirely new backup (as in, separate folder and the whole system).

I just want Time Machine and System Preferences to recognize the backup that I've been running for weeks. Any suggestions? All are welcome; thanks in advance.
-Chasen

Sometimes I have this problem. I normally just open the Spares bundle file, let it mount etc and it normally fixes the problem.