Can't *write* to a hard disk, problem related to GEOM(4)?

[Julien Gabel]

>> /dev/ad10 was previously part of a hardware miror (ar(4) device with a
>> HighPoint HPT374 (channel 2+3) UDMA133 controller), but since it was
>> broken for an unknown reason, thid drive is no more usable, even alone.
>> For example, I am not be able to create a new slice on it.

> Could you try to compile a kernel without the ar(4) driver in it ?
> It may still be latching on to this disk...

Since the ar(4) driver is part of ata(4) generic ATA/ATAPI disk controller
driver, I don't think it is possible to do that without shooting myself
on the foot. Any ideas?

Thanks,
-- 
-jpeg.