On Tuesday 13 Mar 2012 05:36:38 ro...@cs.wisc.edu wrote: > I recently decided to update my AMD64 box from 2.38 to the new 3.2 kernel. > I used genkernel all to compile the upgraded kernel but when I go to boot > I get the following error. > > >>Loading modules > >>Determining root device > > !!Block device /dev/sdb2 is not a valid root device > !!Could not find the root block device in . > Pleas specify another value or" press enter for the same, type "shell" for > a shell, or "q"to skip.. > root block device():: > > However at this point the computer is hung and I am no longer able to > input anything. I just switched over to gentoo from bsd a year or so ago > and am still a newbie at some of the installation procedures but I believe > I have followed the manual correctly with the only change being that /boot > is located on the root partition and not a seperate partition. I'm still > able to use my older kernel without a problem and the only difference that > I can note between the two is that older kernel seems to load in a bunch > of modules and starts mdev, I believe, before trying to locate root. I am > also using Lilo since my motherboard doesn't seem to like grub. Any help I > could get would be appreciated. > > roger > > Here is a print out of lilo.conf > boot=/dev/sdb > map=/boot/map > > prompt > timeout=50 > default=Windows > > image=/boot/kernel-genkernel-x86_64-2.6.38-gentoo-r6 > label=2.6.38 > read-only > append="real_root=/dev/sdb2" > vga=773 > initrd=/boot/initramfs-genkernel-x86_64-2.6.38-gentoo-r6 > > image=/boot/kernel-genkernel-x86_64-3.2.1-gentoo-r2 > label=3.2.1 > read-only > append="real_root=/dev/sdb2" > initrd=/boot/initramfs-genkernel-x86_64-3.2.1-gentoo-r2 > > > other=/dev/sda1 > label=Windows > > > Here is a print out of fdisk > Disk /dev/sdb: 80.0 GB, 80026361856 bytes > 255 heads, 63 sectors/track, 9729 cylinders, total 156301488 sectors > Units = sectors of 1 * 512 = 512 bytes > Sector size (logical/physical): 512 bytes / 512 bytes > I/O size (minimum/optimal): 512 bytes / 512 bytes > Disk identifier: 0x37cd3650 > > Device Boot Start End Blocks Id System > /dev/sdb1 2048 12584959 6291456 82 Linux swap / > Solaris /dev/sdb2 * 12584960 14682111 1048576 83 Linux > /dev/sdb3 14682112 156301487 70809688 5 Extended > /dev/sdb5 14684160 18878463 2097152 83 Linux > /dev/sdb6 18880512 23074815 2097152 83 Linux > /dev/sdb7 23076864 65019903 20971520 83 Linux > /dev/sdb8 65021952 156301487 45639768 83 Linux > > Here is a print out of fstab > # /etc/fstab: static file system information. > # > # noatime turns off atimes for increased performance (atimes normally > aren't # needed); notail increases performance of ReiserFS (at the expense > of storage > # efficiency). It's safe to drop the noatime options if you want and to > # switch between notail / tail freely. > # > # The root filesystem should have a pass number of either 0 or 1. > # All other filesystems should have a pass number of 0 or greater than 1. > # > # See the manpage fstab(5) for more information. > # > > # <fs> <mountpoint> <type> > <opts> <dump/pass> > > # NOTE: If your BOOT partition is ReiserFS, add the notail option to opts. > /dev/sdb2 / ext3 noatime > 0 1 > /dev/sdb1 none swap sw > 0 0 > > /dev/sdb5 /var ext3 defaults > 1 2 > /dev/sdb6 /tmp ext3 defaults > 1 2 > /dev/sdb7 /usr ext3 defaults > 1 2 > /dev/sdb8 /home ext3 defaults > 1 2 > > /dev/cdrom /mnt/cdrom auto noauto,ro > 0 0 > > /dev/sda2 /mnt/Windows ntfs defaults > 1 2 > > proc /proc proc > defaults 0 0 > shm /dev/shm tmpfs > nodev,nouisd,noexec 0 0 > > #tmpfs /var/tmp/portage tmpfs > size=500M,mode=0777 0 0
In all likelihood you have not included in your kernel (built in, not as modules) the corresponding SATA controller driver. Run a diff between old and new kernel .config to find out what's missing, or cp your old .config into your new kernel tree and run 'make oldconfig'. -- Regards, Mick
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