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Have a 1gb external drive connected locally to my iMac via FW800. Latest backup was about 2 hours ago and, though nothing big has changed (other than a couple of Word files), it now says there's not enough space to do a backup. TM is showing 177 of 999 GB available (and I'm only backing up appx a half TB of data). It's as if I'm trying to backup a new machine to an old TM backup file. Also the 'verify backups' is greyed out when option-clicking TM - but I believe that's because it's connected locally (correct?). At this point do I wipe the drive and begin a brand new backup?
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How long has the drive in question been in service as a TM volume? While Apple uses certain techniques to minimize the amount of space required for TM backups, they are cumulative - the potential does exist over time to run out of space on the TM volume, even if the capacity of the volume(s) being backed up is less than the capacity of the TM volume.
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It's been in service for several months and usually lets me know when it's full and is deleting the oldest backup. This time it refuses to do a backup.
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Did you rename your Mac in the Sharing settings or rename your boot drive or rename a folder with a couple of hundred GB of files in it?
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No - unfortunately, nothing renamed. I think I'm going to just wipe & start over - can only assume it somehow corrupted :-(
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TM drives sometimes get corrupted and just need to be reformatted. Happens,
