How to "reset" a HDD which has the ZFS Datasystem

[Nowo]

Hello,
I want to remove a disk from my FreeNAS Server and use the disk at an other place. My problem is that zfs is the datasystem from the disk, but I want to use an other. So I want to know, how to reset the disk into the original format.
I read, that I can use

Code:

zfs destroy

to reset the disk, is that right or what I have to do?
Thank you :D

 

[Mr. Slumber]

You've got lots of possibilities to solve this. E.g. create a live Ubuntu boot stick, boot your FreeNAS box with it and format your HDD using Ubuntu. Some hints given here.

 

[danb35]

zfs destroy

Not the right answer. zpool labelclear will do the job, or just delete the partition table with any tool that understands GPT partition tables.

 

[jgreco]

Pretty much any disk partitioning tool. If you put the HDD into a new system with no other disks, DBAN is a good tool to clear the disk. If you are going to be using the disk yourself, you can use it in "zero only" mode to clear the disk.