On Thursday 13 January 2005 02:50 pm, Peter Jay Salzman wrote: > On Thu 13 Jan 05, 3:52 PM, Dylan Beaudette <[EMAIL PROTECTED]> said: > > > On Thu 13 Jan 05, 3:29 PM, p <p> said: > > >> On Thu 13 Jan 05, 12:22 PM, Ken Herron <[EMAIL PROTECTED]> > > >> > > >> said: > > >> > Dylan Beaudette wrote: > > >> > >The [cdrom] drive is connected to the primary IDE channel, and my > > >> > > >> hard > > >> > > >> > >drive is connected to a serial IDE channel. As of kernel 2.6 my > > >> > > hard > > >> > > >> drive > > >> > > >> > >is accessed as a SCSI device. However, my cdrom drive does not > > >> > > answer > > >> > > >> to > > >> > > >> > >requests sent to hda,hdb,hdc,hdd ... nor to any SCSI devices... > > >> > > > >> > Dylan, are you able to access both the CD and the hard drive from > > >> > > >> other > > >> > > >> > operating systems or earlier Linux revisions when they're wired this > > >> > way? I wonder if the motherboard has disabled the primary IDE > > >> > channel because one of the serial ATA ports is in use, or maybe > > >> > Linux can't drive both at the same time for some reason. Perhaps > > >> > moving the CD to the secondary IDE bus would do the trick. > > > > UPDATE: > > Before touching any hardware this is what I found: > > CDROM drive plugged into the Primary PATA connector > > Hard Drive plugged into the Primary SATA connector > > > > POST screen lists Hard Disk as being connected to secondary IDE, CDROM > > connected to primary > > > > ->the BIOS was using AUTO for all configurations of the SATA/PATA > > subsystem ->the PATA/SATA controller is a ICH5R, but there is an > > integrated Promise PDC20378 PATA/SATA controller, which was disabled in > > the BIOS... > > > > > > I then attempted to change how the BIOS configured to the SATA/PATA > > subsystem on the motherboard, using the ICH5R controller... no > > combination of settings would work, and in fact I was able to make the > > CDROM drive disapear from the POST screen with one permutation. After > > giving up, I reverted all of the BIOS settings to what they had > > previously been (as far as I can tell). Now the system will not boot off > > of the hard drive - i.e. the grub screen does not even come up! > > > > I was able to boot into KNOPPIX with a 2.4 kernel, and mount my hard > > drive, and all seems to be fine.... I suspect that the MBR got hosed > > somehow... but this makes no sense to me at all. > > > > >From KNOPPIX i tried to use the grub-install command, using my menu.1st > > > > file as the configuration file. All seemed to work, but the machine still > > refuses to load grub at startup... > > > > > > Any ideas? I am really stuck now! > > > > Dylan > > I'm nearly 100% certain that your MBR wasn't hosed to begin with. Two > guesses: > > 1. You disabled SATA and didn't realize it. > > 2. Your BIOS boot order doesn't have the SATA in it. >
Thanks Pete! Turns out that when i played around with the SATA/PATA config stuff in the BIOS, it added a new boot order list for hard disks. Forgetting that an external USB disk was plugged in (and not realizing that the BIOS would even see it) i never thought to check the hard disk boot order settings! Now that I can boot my machine, with the Promise IDE controller enabled, i will continue to work on the CDROM issue... -- Dylan Beaudette Soils and Biogeochemistry Graduate Group University of California at Davis 530.754.7341 _______________________________________________ vox-tech mailing list vox-tech@lists.lugod.org http://lists.lugod.org/mailman/listinfo/vox-tech