wipe free space on drive

Hay People, New here , asking a question, i want to wipe (7 pass) my unused part of my hard drive, after several years of deleting programs, i know most of it is still there, somewhere in the 500 gig drive,, was wondering if i could partition my hard drive to, say 20gigs,or so? so would not take so long to wipe in future, tks for any help..bilwil72

7 pass in unneeded, 1 secure pass is enough for modern hard drives.

You may have to use a 3rd party partitioner to repatriation depending on your OS version if I recall correctly.

i know most of it is still there, somewhere in the 500 gig drive,, was wondering if i could partition my hard drive to, say 20gigs,or so? so would not take so long to wipe in future, tks for any help..bilwil72

Very good idea for the future.

You may be able to shrink your existing partition down to 20 GB, leaving 480 GB unallocated Space remaining.

Data will still be available for reading unless you wipe free space before shrinking,

or create and then wipe another 480 GB partition.