Although my bios recognized my scsi disks, my Fedora install needed me to load drivers manually otherwise the scsi disks were not found. After that, the install completes without further problems. I asked that grub be used and installed on the mbr.
After reboot I get "Operating System not found".
Using linux rescue (again with noprobe so I can load the driver), I tried rewriting to the boot sector and although grub claims success, the results are the same - can't boot. I've tried copying stage 1&2 to a floppy to make it do the boot but I get a grub prompt after stage 2 is loaded.
The driver I needed during install is listed in modprobe.conf (aic7xxx) and I have tried re-creating initrd in various configurations (--preload=aic7xxx, --omit-raid-modules, etc) all with the same result - can't boot
I'm looking for ideas and suggestions . . . .
TIA
Alex ====
On Wed, Oct 05, 2005 at 10:12:10PM -0400, Alex @ Avantel Systems wrote:
Although my bios recognized my scsi disks, my Fedora install needed me to load drivers manually otherwise the scsi disks were not found. After that, the install completes without further problems. I asked that grub be used and installed on the mbr.
After reboot I get "Operating System not found".
Using linux rescue (again with noprobe so I can load the driver), I tried rewriting to the boot sector and although grub claims success, the results are the same - can't boot. I've tried copying stage 1&2 to a floppy to make it do the boot but I get a grub prompt after stage 2 is loaded.
The driver I needed during install is listed in modprobe.conf (aic7xxx) and I have tried re-creating initrd in various configurations (--preload=aic7xxx, --omit-raid-modules, etc) all with the same result - can't boot
I'm looking for ideas and suggestions . . . .
I would have used --with=aic7xxx in mkinitrd . That has always worked for me. And of course aic7xxx must be loaded by modprobe.conf.
Alex @ Avantel Systems wrote:
Although my bios recognized my scsi disks, my Fedora install needed me to load drivers manually otherwise the scsi disks were not found. After that, the install completes without further problems. I asked that grub be used and installed on the mbr.
After reboot I get "Operating System not found".
Using linux rescue (again with noprobe so I can load the driver), I tried rewriting to the boot sector and although grub claims success, the results are the same - can't boot. I've tried copying stage 1&2 to a floppy to make it do the boot but I get a grub prompt after stage 2 is loaded.
The driver I needed during install is listed in modprobe.conf (aic7xxx) and I have tried re-creating initrd in various configurations (--preload=aic7xxx, --omit-raid-modules, etc) all with the same result - can't boot
I would have thought this error message meant the machine was not reading the MBR, and that the solution lay in the BIOS settings.
The alternative is that you have not actually installed grub on the correct disk.
I'm no boot expert, but as I understand it the machine has to read the MBR _before_ it loads kernel or driver.
Incidentally, I would install grub with "grub-install --recheck /dev/sda" or even try running grub interactively, to make sure it understands your disk setup.
Timothy Murphy wrote:
Alex @ Avantel Systems wrote:
Although my bios recognized my scsi disks, my Fedora install needed me to load drivers manually otherwise the scsi disks were not found. After that, the install completes without further problems. I asked that grub be used and installed on the mbr.
After reboot I get "Operating System not found".
Using linux rescue (again with noprobe so I can load the driver), I tried rewriting to the boot sector and although grub claims success, the results are the same - can't boot. I've tried copying stage 1&2 to a floppy to make it do the boot but I get a grub prompt after stage 2 is loaded.
The driver I needed during install is listed in modprobe.conf (aic7xxx) and I have tried re-creating initrd in various configurations (--preload=aic7xxx, --omit-raid-modules, etc) all with the same result - can't boot
I would have thought this error message meant the machine was not reading the MBR, and that the solution lay in the BIOS settings.
That message is displayed by the MBR.
The alternative is that you have not actually installed grub on the correct disk.
Or into one of the partitions, instead of into the MBR.
I'm no boot expert, but as I understand it the machine has to read the MBR _before_ it loads kernel or driver.
That's exactly right.
I've written a little tutorial which, if there is interest, I could post here. I originally composed it for the Debian user's group.
But it's really OS independent (mostly).
Incidentally, I would install grub with "grub-install --recheck /dev/sda" or even try running grub interactively, to make sure it understands your disk setup.
Mike
Mike McCarty wrote:
After reboot I get "Operating System not found".
I would have thought this error message meant the machine was not reading the MBR, and that the solution lay in the BIOS settings.
That message is displayed by the MBR.
Are you sure? I thought I got this message when my disk was dead. I assumed it was provided by the BIOS.
Mike McCarty wrote:
After reboot I get "Operating System not found".
I would have thought this error message meant the machine was not reading the MBR, and that the solution lay in the BIOS settings.
That message is displayed by the MBR.
Are you sure? I thought I got this message when my disk was dead. I assumed it was provided by the BIOS.
Yes, the bios on this system was pointing at a scsi raid controller and could not be set to anything else in the bios (other than booting the floppy or CD). The raid controller could not be configured (Adaptec FastRaid controller : no driver - no config util). If there was one disk, it did not matter but I had installed a second disk. After the 2nd disk was pulled, the problem was solved. (well, the problem moved to something else)
alex.
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