How to zero drives using FreeNAS?

[Shiroi Kage]

I'm about to move and I have to disassemble my box and sell my HDDs. I want to zero them before doing that. How do I do that in FreeNAS? Is it possible at all?

 

[Robert Trevellyan]

You can use the Wipe button: http://doc.freenas.org/9.3/freenas_storage.html#view-disks

 

[danb35]

...and if you don't trust the button, 'dd if=/dev/zero of=/dev/ada0 bs=1m' will do the trick.

 

[Shiroi Kage]

You can use the Wipe button: http://doc.freenas.org/9.3/freenas_storage.html#view-disks

Cheers for the advice! Does the wipe button do a regular format or does it actually zero the drives? Do you know?

EDIT: Never mind. I looked at it and it has both the random and the zero option. Sounds like it'll do. Thanks again.

 

[Shiroi Kage]

...and if you don't trust the button, 'dd if=/dev/zero of=/dev/ada0 bs=1m' will do the trick.

Thanks!

May I get a little bit more explanation on how this command works? How do I specify which drive(s) will be zeroed by this, or will this just go through everything recursively?

 

[ethereal]

/dev/ada0

change this to the drive you want to wipe - obviously be careful you select the correct one.

 

[Shiroi Kage]

/dev/ada0

change this to the drive you want to wipe - obviously be careful you select the correct one.

Got it. Thanks!