Delete all duplicates from a hard drive
Posted: 04 Dec 2019, 00:15
I had a drive for backup, but it became too small. I bought a new drive and made a new full backup there.
Now, I want to compare byte by byte all files, all folders on the original drive and the old backup drive,
because I could delete a file by mistake on the original drive.
It may take hours or even days, because there are many thousands of files.
When AllDup displays results, I want to delete all duplicate files from the old backup. To leave only these that don't exist on the original drive.
How can I perform this operation "delete all duplicates from drive J: (old backup) with a single click"?
When there are a few files I can manually select checkboxes what to delete, when there are a few thousands it would take years.
Now, I want to compare byte by byte all files, all folders on the original drive and the old backup drive,
because I could delete a file by mistake on the original drive.
It may take hours or even days, because there are many thousands of files.
When AllDup displays results, I want to delete all duplicate files from the old backup. To leave only these that don't exist on the original drive.
How can I perform this operation "delete all duplicates from drive J: (old backup) with a single click"?
When there are a few files I can manually select checkboxes what to delete, when there are a few thousands it would take years.