this post was submitted on 20 Jan 2025
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A Qnap NAS has a drive with some bad sectors, I want to RMA it, but before just want to figure out how to prepare a drive? It's part of a raid 5 setup of 4 drives unencrypted. So I want to remove it and wipe it. Got a Linux machine I can use, but never done this before.

What are common Linux tools to do that sensibly?

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[–] WolfLink@sh.itjust.works 1 points 4 days ago (1 children)

I’d recommend /dev/urandom instead of /dev/zero

[–] franglais@lemm.ee 0 points 4 days ago (1 children)

Use shred , it will automate multiple random passes, and finish with a zero pass.

[–] Kvoth@lemmy.world 1 points 3 days ago (1 children)

Completely unnecessary. Overwriting the whole drive with zeros completely stops anyone from being able to recover anything

[–] franglais@lemm.ee 1 points 3 days ago (1 children)

It won't stop "anyone", I've been lead to believe there are ways even after a single pass, to recover data. if I had anything to hide, I would use a physical destruction method, nothing else

[–] GrumpyDuckling@sh.itjust.works 0 points 2 days ago (1 children)

If you're that paranoid about it, then just physically destroy the drive.

[–] franglais@lemm.ee 0 points 2 days ago (1 children)

I work for an it department who resells their old stock online, we scrub the disks before sales, physical destruction is not possible.

That's the companies decision and they should understand the risks.