aic7xx system hangs

[C. Linus Hicks]

On Fri, 2004-09-10 at 20:15, C. Linus Hicks wrote:
> On Fri, 2004-09-10 at 14:55, Jeremy Conlin wrote:
> > I did install FC2 from the CDs.  My latest installation was upgrading 
> > from RH9.  I know my system will boot into RH9 so that is where I 
> > started.  I can boot the installer CD into rescue mode, but don't know 
> > where to check the version numbers for the kernel and aic7xxx driver.  
> > What would I do when I find those numbers?
> 
> When you installed FC2, did you upgrade an existing RH9 installation on
> that system or did you do a new install?
> 
> You say you know your system will boot into RH9 - is that present tense,
> as in you have it set up to dual boot, or are you just saying that you
> know it works properly with RH9?
> 
> If the only way you have to look at the installed system is by booting
> from CD (Knoppix, rescue mode, etc.) I would do that and try the old
> aic7xxx driver. It doesn't work on my system. I get data overrun errors
> and it doesn't register any devices, but I am running amd64 so that
> could be the difference.
> 
> Here's what you will have to do to use the old driver (please note this
> is a non-trivial process):
> 
> Boot the FC2 CD into rescue mode.
> 
> You will need access to the partitions where you installed FC2 and this
> will require mounting them in non-standard locations.
> 
> Copy, not move, copy the <your install>/boot/initrd-<bletch>.img file to
> /tmp/.
> 
> I'm not sure you'll have all the programs you will need in your path, so
> you may have to get creative about mounting additional partitions and
> adding appropriate directories to your path.
> 
> Rename that initrd file in /tmp to end in .img.gz then gunzip it.
> 
> Make sure you have some empty directory like /mnt/img where you can
> mount another filesystem, then mount that .img file:
> 
> mount /tmp/initrd-<bletch>.img /mnt/img -o loop
> 
> Make sure you have the partition on your FC2 system that has the
> /lib/modules directory mounted, and copy
> /lib/modules/<kernelversion>/kernel/drivers/scsi/aic7xxx_old.ko to
> /mnt/img/lib/ then cd to where you just moved it.
------------------------------------------^^^^^
---  Sorry, should be "copied"
> 
> In there you will see a few files, including now two aic7xxx* files, so
> delete the one that was there, aic7xxx.ko and rename aic7xxx_old.ko to
> aic7xxx.ko.
> 
> Now cd back to /tmp and umount /mnt/img.
> 
> Next gzip the initrd file, and you will end up with a .img.gz again.
> Change that to something like initrd-<bletch>-old.img and copy it to
> <your install>/boot/.
> 
> Now edit your /boot/grub/grub.conf (make sure you are editing the one on
> your installed system).
> 
> Duplicate the section of four lines including the sequence of title,
> root, kernel, and initrd. Modify that duplicated set of four lines as
> so:
> 
> Change the title line to signify it is for your modified initrd. This is
> just text you will see on the Fedora boot screen.
> 
> Change the initrd line to specify the name of your new one (with the
> -old).
> 
> Save your modifications and you should be ready to reboot. Remember to
> remove the CD.
> 
> When it gets to the boot screen this time you should see two entries.
> Select your new one and good luck.

-- 
C. Linus Hicks <lhicks at nc.rr.com>