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Acronis TrueImage 2021: no space available

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I want to backup my partitions C:(100GB), D:(250GB) and E:(500GB) in G:(2TB). They are all internal disks.

I have been able to backup C: and D: but when I try E: a message says that "not enough space is available"

Actually there are 1.24TB avalable in G:

I tested all partitions C,D,E,G with CHKDSK and they are all OK

I even tried to backup to an external disk with 3TB available and got exactly the same error message on E:

ested also this disk with CHKDSK and it was OK.

Any suggestions?

 

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Please see forum topic: File system error in Acronis which is probably where the cause of your backup problem lies, i.e. a file system error with the selected source partition.

I suspect that the partition has an issue with the free space map in the master file table (MFT) which will make Acronis believe the partition is a whole lot larger than it really is. The above topic has an example of reading the disk report that Acronis can produce and which will identify any disk issues.