I have two hard drives (same size, same partitions, same model) that have been synchronized using FreeFileSync. They are used to store data, not the system. After sync, the drives should report same free and used disk space but it is not the case.
First drive (used for storage) reports 781 GB of used disk space, while second drive (backup) report only 778 GB. To get that information, I right clicked on the disk then choose properties.
First, I was thinking that synchronising tool was not doing is job (by excluding some files) but using other file synchronisation tools (like SyncToy or DirSyncPro) give me same result (no difference in files reported justify a delta of 2 GB).
Also: if I go to drive root folder, select everything (all files and folders) and right click then choose properties, total reported files size is 778 GB on both drives. If i look closer at the numbers, there is a small difference of a few megabytes between the two drives however.
Computer have been restarted several times.
Recycle bin have been emptied on both drives (if I go to
$RECYCLE.BINfolder, both are almost empty (only a few KB).
Shadow copy is disabled.
vssadmin list shadowsdoesn't report anything.
Windows Explorer folder settings have been modified to display system files and hidden files.
I have run "Error checking" tool (with "Automatically fix file system" enabled) on both disks.
Why is there a difference in used and free space between the two drives? How can I solve this?