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Backups larger than drive they're on

Thread needs solution

"Clean up backup versions" used to show the correct sizes of my backups but recently started showing the total size as 2.1TB but the disc they're on is only 0.5TB!

I've successfully recovered files from the backups so the files seem to be OK.

Any idea how to get the backup size corrected?

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Lou, welcome to these public User Forums.

The most common reason for this type of issue is a problem with the free space map or master file table on the storage drive.  I would recommend running CHKDSK /F for the storage drive and see if that resolves the issue.

Ran CHKDSK /F and it found no problems.

I've deleted the older backups and "Clean up backup versions" still shows the size as 1.3 TB. However, the main Backup window shows the destination drive has "281.3 GB of 465.8 GB free" which is what Windows shows.

Lou, I suspect that the clean up versions tool must use information from some other source if it is still showing incorrect sizes when the main Acronis GUI is correctly showing the size.