regular user can destroy disk label?!?

Robert Watson rwatson at
Fri Jul 6 13:34:25 UTC 2007

On Wed, 4 Jul 2007, Julian H. Stacey wrote:

> Thomas Hurst wrote:
>> * Julian H. Stacey (jhs at wrote:
>>> Either:
>>>   - You made a typo with ar0s2 & meant ad0s2,
>>>   - Or you really mean "ar" - man 4 ar reports a comms card !
>> ataraid(4) exposes ATA RAID devices as ar%d:
>>  -% man 4 ataraid |grep /dev
>>       /dev/ar*  ATA RAID device nodes
> Thanks Thomas, that explains name then.
> It doesnt affect thoughts on permissions though, unless driver very strange.

Something people occasional get surprised by is the fact that members of the 
operator group are given significant access to local disks, etc.  Could user 
account in question have been in the operator group?

Robert N M Watson
Computer Laboratory
University of Cambridge

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