On Fri, 14 Jan 2000, Ronald F. Guilmette wrote:
>
> One fact that I found out the hard way however... and that ISN'T in the
> FAQ... is that if you have a SCSI drive that was low-level formatted
> while your SCSI _controller_ was set with ``BIOS address translation''
> either on or off, and if you then _change_ this SCSI controller setting
> (off -> on, or on -> off) and then try to use the previously-low-level-
> formatted drive on the controller while it is set that way, you may per-
> haps experience some grief.
One reason it is not in the FAQ, is that the low-level formating of a SCSI
drive is totally unrelated to the BIOS and/or it's notion of geometry.
SCSI disks are accessed by logical block number only.
What you may have been experienceing is a disk formatted with a block size
!= 512 bytes. It is possible to format (many/all) SCSI drives with a
block size other than 512 bytes.
>
> I had one SCSI drive in a system that was working perfectly well, and
> then I tried to add another _identical model_ drive from a different
> system and every tool I used to tell me what the second drive believed
> its geometry to be showed the geomery for the drive as being clearly
> incorrect... according to the info contained in the FAQ page at the
> above URL... for the current translation/non-translation setting of my
> SCSI controller.
>
Brian Beattie | The only problem with
[EMAIL PROTECTED] | winning the rat race ...
www.aracnet.com/~beattie | in the end you're still a rat
To Unsubscribe: send mail to [EMAIL PROTECTED]
with "unsubscribe freebsd-hackers" in the body of the message