FreeFileSync Forum

D: is a partition on a separate SSD from my boot partitions.
I already use Everything, it didn't help. But I noticed that the inaccessible space was roughly the same size as my OneDrive folder so I disabled OneDrive and hey presto, no more inaccessible space. Then I re-enabled OneDrive and it didn't ...

Hmm. It has nothing to do with compressed drives - and I've also now seen this inaccessible space created using just Explorer, so it's not a bug in FFS either. It's something that Windows is doing, but none of my file operations in Windows have resulted in more than 1.5GB inaccessible. Something ...

OK so I did a test. I used Paragon to create a new empty 20GB partition and format it as NTFS with drive letter T.
I copied 8GB of random stuff to it and used FFS to synch it with a new folder on my backup drive. That worked fine.
Then I copied another 8GB of stuff to the new backup folder and ran ...

Hi - yes, I'm aware that others have had the same issue and that nobody has found a solution.

I formatted the drive in Explorer (right-click > Format > Quick Format) and it was completely empty (as it should have been). I also checked the partition with Paragon HD Manager and all was good.
I used ...

...so I restored my D drive manually, by copying the files in Explorer. Everything was fine, the D drive and the backup matched. And then I ran FFS, knowing the two drives were identical apart from my Outlook files, and now I have 8.7GB inaccessible space on my D drive again. What gives???

Hi all - and thanks to the devs for a fantastic piece of software.

I have a problem that seems to be related to FFS.

I've been using FFS to back up my data partitions. Yesterday I ran SpaceSniffer on my D drive (data, separate from my C OS drive) and it reported that there was 8GB of 'unaccessible ...