Corrupt GPT on ZFS full-disks that shouldn't be using GPT

Chris Stankevitz chrisstankevitz at
Wed Jul 15 06:28:58 UTC 2015

On Sun, Jun 28, 2015 at 5:46 PM, Chris Stankevitz
<chrisstankevitz at> wrote:
> Can I use dd on a /dev/daX that is currently part of an
> imported, mounted, and online zpool?

No.  If you try to use dd to overwrite the last sector of the drive
while it (the entire drive) is used by zfs, you will get "dd:
/dev/daX: Operation not permitted".


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