It is fixable.
johnf@odie:~$ cat /proc/ide/hdc/geometry
physical 16383/16/63
logical 2495/255/63
then you reboot and at the liloprompt you do
linux hdc=16383,16,63
that mean in this boot linux will force the geometry into lba mode. You
then run fdisk and recreate the partition table from scratch by using
the o command. After the next reboot the drive should be fine without
the need for the kernel options.
On Fri, Sep 14, 2001 at 01:37:27PM +1000, Marty Richards wrote:
> Hi Howard,
>
> I see this a lot. It seems that hda is in LBA mode, and hdc is CHS. I don't
> usually change the mode or the settings, just calculate and create hdcX
> slightly larger than the hdaX. This works nicely for disaster recovery also.
>
> Cheers,
> Marty
>
> -----Original Message-----
> From: Howard Lowndes [mailto:[EMAIL PROTECTED]]
> Sent: Friday, 14 September 2001 7:48 AM
> To: SLUG Mailing List
> Subject: [SLUG] to C/H/S, or not to C/H/S?
>
>
> Situation
> Perform a customised server installation of RH7.1 with RAID 1
>
> Mission
> Create a multi-partition RAID 1 set on two identical IDE drives,
> /dev/hda &
> /dev/hdc (Seagate ST320410A).
>
> Execution
> Perform a graphical RH7.1 install, but when it gets to the bit about
> creating
> partitions, select the "expert" mode which calls fdisk in the GUI.
>
> At this point I selected hda and set up the partitions I wanted, noting that
> the
> C/H/S was 2434/63/255 giving blocks of 16065*512 bytes.
> I then selected hdc but noticed that the C/H/S was different, being
> ?????/63/16
> (I think the ????? was about 38792, but it is not important) giving blocks
> of
> 1008*512 bytes.
> I selected expert mode and altered the C/H/S to match the values of hda, and
> then created the partitions.
> All went OK after that.
>
> Questions
> 1. Is this a problem with fdisk, or is it a problem with the drives?
> 2. Would I have been better off to set hda to the finer granularity of
> hdc, or
> was I correct in using the coarser granularity that I did, or does it
> matter?
> 3. WTFG?
>
>
> Howard.
> __
>
> --
> SLUG - Sydney Linux User Group Mailing List - http://slug.org.au/
> More Info: http://lists.slug.org.au/listinfo/slug
--
John Ferlito
Senior Engineer
Bulletproof Networks
ph: +61 (0) 2 9328 4114
fax: +61 (0) 2 9328 4115
mob: +61 (0) 410 519 382
http://www.bulletproof.net.au/
--
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More Info: http://lists.slug.org.au/listinfo/slug
