time-capsuletime-machine
When I use Finder to look at the time machine, on a 6 TB disk, it reports 480 GB for one of the computers being backed up there, and 570 GB for the other one (where I saw the error), and 4.1 TB available. Both of these make sense, based on the contents of the computers they are backups of.
However, I receive the error message Disk is nearly full.
Any ideas?
Enter TimeMachine, then in the main window, select the backup you want to delete (on the right), then use the Action Menu (Gear icon) to select "Delete Backup".
Using this menu, you can also, when a file or a folder is selected, delete all its backup.
I've now gotten Time Machine to see the older backups. Not sure if the first step is necessary as I noted that Time Machine Preferences took a while to update the "Latest backup" date, so it might have been enough to just perform a backup.
At this stage Time Machine Preferences still states that I have no backups, but by choosing Enter Time Machine I can see the earlier backups.
After this was done, Time Machine Preferences update both the Latest Backup date and Oldest Backup date to correct values.
Best Answer
There is a discrepancy of what is informed as available space and what actually is available for recording. This is discovered by Time Machine when it tries to save data, so the short answer is corrupted data (in this case, data about how data is stored). Time Machine does a complex kind of backup that is not just a copy, so my suggestion is...
In my experience, it was taking longer than one hour, so Time Machine started the second backup before ending the first one, leading to a mess! There is third-part solutions to change the Time Machine frequency (two hours or more).