Dan Nicholson wrote: > On Fri, Oct 31, 2008 at 11:32 AM, Wolfgang Messingschlager > <[EMAIL PROTECTED]> wrote: >> Dan Nicholson wrote: >>> On Fri, Oct 31, 2008 at 10:39 AM, Wolfgang Messingschlager >>> <[EMAIL PROTECTED]> wrote: >>>> meanwhile I did >>>> >>>> - make mrproper >>>> - make menuconfig (CONFIG_EXT3_FS=y) >>>> - make >>>> - make modules_install >>>> - cp -v arch/i386/boot/bzImage /boot/vmlinuz-2.6.26.1 >>>> - cp -v .config /boot/config-2.6.26.1 >>>> - cp -v System.map /boot/System.map-2.6.26.1 >>>> >>>> >>>> I added the lines >>>> >>>> title LFS kernel 2.6.26.1 >>>> root (hd0,22) >>>> kernel /vmlinuz-2.6.26.1 root=/dev/hdb20 ro >>>> savedefault >>>> >>>> to /boot/grub/menu.lst >>>> >>>> This caused the following errors during boot >>>> >>>> VFS: cannot open root device "hdb20" or unknown block (0,0) >>>> Please append a correct "root=" boot option; here are the available >>>> partitions: >>>> Kernal panic - not syncing: VFS: Unable to mount rootfs on unknown - >>>> block (0,0) >>> The problem is that you need the block devices and controller built in >>> as well as the file system. So, SCSI + libata (to use /dev/sd* nodes) >>> or IDE (to use /dev/hd* nodes). >>> >>> For SCSI + libata: >>> CONFIG_BLK_DEV_SD=y >>> CONFIG_BLK_DEV_SG=y >>> CONFIG_ATA=y >>> CONFIG_[SP]ATA_$controller=y >>> >>> For IDE: >>> CONFIG_IDE=y >>> CONFIG_IDE_$controller=y >>> CONFIG_BLK_DEV_IDE=y >>> CONFIG_BLK_DEV_IDEDISK=y >>> >>> -- >>> Dan >> Thanks Dan, >> >> for the quick reply. I have only a IDE disk. >> >> # egrep '(CONFIG_IDE|CONFIG_BLK_DEV_IDE)' .config >> CONFIG_IDE=y >> CONFIG_BLK_DEV_IDE=y >> # CONFIG_BLK_DEV_IDE_SATA is not set >> CONFIG_BLK_DEV_IDEDISK=y >> # CONFIG_IDEDISK_MULTI_MODE is not set >> CONFIG_BLK_DEV_IDECD=m >> CONFIG_BLK_DEV_IDECD_VERBOSE_ERRORS=y >> CONFIG_BLK_DEV_IDETAPE=m >> CONFIG_BLK_DEV_IDEFLOPPY=m >> # CONFIG_BLK_DEV_IDESCSI is not set >> CONFIG_BLK_DEV_IDEACPI=y >> # CONFIG_IDE_TASK_IOCTL is not set >> CONFIG_IDE_PROC_FS=y >> # CONFIG_IDE_GENERIC is not set >> CONFIG_BLK_DEV_IDEPNP=y >> CONFIG_BLK_DEV_IDEDMA_SFF=y >> CONFIG_BLK_DEV_IDEPCI=y >> # CONFIG_IDEPCI_PCIBUS_ORDER is not set >> CONFIG_BLK_DEV_IDEDMA_PCI=y >> CONFIG_BLK_DEV_IDEDMA=y > > That looks reasonable, although you may want CONFIG_IDE_GENERIC=y, too. > >> I am not sure what you mean with >> >> CONFIG_IDE_$controller=y > > It had been a while since I looked at the IDE driver. I thought there > were specific backends for each controller (like Intel PIIX), but it > appears there aren't. I think you can ignore this. Have you tried > booting with the above configuration? > > -- > Dan
Hi Dan, thanks for your suggestion. "CONFIG_IDE_GENERIC=y" was the solution for the problem. Now I am able to boot without a initrd file. So I can proceed to overwrite the MBR and to use the LFS kernel. Wolfgang -- http://linuxfromscratch.org/mailman/listinfo/lfs-support FAQ: http://www.linuxfromscratch.org/lfs/faq.html Unsubscribe: See the above information page
