Hot answers tagged data-recovery
Try to run fdisk -l /dev/sdb to see if the partitions are valid. If so, you could be trying to access the wrong partition (/dev/sdb instead of /dev/sdb1). If the partition are valid and you are acessing the wrong one, you could try to access the correct one instead. But if the partitions are not valid, I don't think you will be able to recover anything from ...
Open "Run" type in "diskmgmt.msc", this opens the disk manager. Find the drive, right-click on the drive, scroll to Change Drive Letters and Paths, you can then give it a dedicated drive letter. Every time you plug it into your computer, it will use the drive letter you assigned to it
A file could be scattered in pieces on your disk. So when you delete the file, those pieces are still there but orphan of the entry on a table that permits to find them. To "undelete" the file it's needed to scan all the disk. When you format a disk you're erasing a table, not erasing the entire disk. After the format, the files are still there.
As Ramhound pointed out in the comment, files can become fragmented which means that they don't take up one contiguous space in a medium. When you delete the index to a file, the recovery program has to now look through the whole medium to find every piece to be able to put it together. This is for just one file. Imagine how long this process is for every ...
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