Permanently delete files from an old HDD

[GenZod04]

Hi, I have copied some files & folders from an old HDD to a USB pen drive, where they are currently stored. I want to permanently delete the files, for security reasons, as they were synched to the hard drive from Google Drive.
What I am unsure of is; if I delete the files directly off the USB drive, using a file shredder program, will the files still be recoverable from the old HDD. Or will the best solution be to copy all the folders & files back onto the original HDD and delete them using a file shredder from there.
Thanks for any help on this.

 

[whs]

Either way. Easiest would be to run a Clean All command a few times on both. Then you write zeros over the space - each time you run the Clean All.

 

[A Guy]

Welcome to Seven Forums GenZod04. What whs suggested will suffice, no need to copy them back. If you want to go further.

Best Free Hard Drive Eraser

Be careful when selecting drives to be erased!

A Guy