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This can happen on an SSD too, if new data is written to LBA addresses previously associated with the trimmed sectors, the SSD firmware simply assigns new 'blocks' to those LBA addresses.Īgain HxD and some knowledge about the file type you're trying to recover can help determine what's going on: Suppose you're trying to recover a JPEG file but since it's deletion new data was saved. On TRIM and non TRIM drives it may simply be the clusters previously allocated to the deleted files are already overwritten. If TRIM is the issue at play then files will largely contain zeros. However if files are selected and saved, it's simply saving the zero filled sectors the SSD returns.Įasiest way to check for this issue is opening a few of the recovered files in for example HxD. Also noteworthy are so called SMR drives, they also benefit and support the ATA TRIM command.įile system meta data associated with the file is not 'trimmed' which explains why file recovery and undelete tools may 'detect' such files. TRIM is supported by most modern operating systems and SSD drives. If such sectors are read by the OS or a file recovery tool, the SSD simply returns sectors filled with zeros without even actually reading. In practice the sector ranges are not immediately erased, however they may be removed from LBA space in a matter of seconds. This is useful for SSD drives as those have a constant need for erased pages to write data to.

TRIM is an ATA command which allows the OS to inform the drive about ranges of LBA sectors the drive can use as it pleases. Nowadays this is very often caused by TRIM. NOTE: Also I've installed the first Software on the same disk of where the files were deleted, so basically very few files were slightly overwritten (but not all of my case) now I changed the Download folder's directory. If you need any further infos please just ask I'll be ready to answer! Thank you for all thesupport you'll be able to give me, I need to recover many file types, but the most important one is. I've read a post about a software called File Scavanger, I'll now try this one too, however if you have any other softwares (even for non-beginners) please let me know!

I tried several File Recovering Softwares ( EaseUS, Recuva, Puran, etc) and all of them recovered the files but when I open them the pc can't recognize their format (or won't open them anyways). I clicked "No" but it went deleting anyways. I opened my pc and a pop up asked if I wanted to delete directly a folder and all its files as it was too big for the trash. Let's get straight to the point, long story short: