On 25/10/12 22:50, Ken Moffat wrote: > On Thu, Oct 25, 2012 at 10:03:46PM +0100, spiky wrote: >> Hi >> Ok I,m having real trouble booting my lfs system. Long storey with lfs >> 7.2 wont boot, I have now dd a working lfs-7.0 system, from another >> laptop which I have done before. on to this laptop replacing 7.2. >> I adjusted fstab file as needed for new partitions. >> I have tried booting from grub prompt (host grub) >> set root=(hd0,3) >> linux /boot/vmlinuz-3.3-rc1-lfs-7.0 >> boot >> >> I get a kernel panic >> "VFS unable to mount root fs via NFS trying floppy >> VFS cannot open root device "(null)" or unknown-block(2,0) >> please append a correct "root=" boot option here are availble partitions" >> then it lists the sda partitions. >> >> I got the same panic with the lfs 7.2 install, I have rebuilt the kernel >> many times different configurations. >> I have built lfs since 6.7 and always got them to boot, this is the >> 1st time I have built on this laptop, Nothing special about this laptop. >> I rebuilt the kernel >> Would really like to get this fixed Thks > I think the root of your problem is that you have no previous good > .config for _this_ laptop. As we always say, both the filesystems > and device drivers that are required to boot need to be built in to > the kernel. > > But something about your report is odd - you say it lists the sda > partitions (and I assume that is the correct drive), and I also > assume you aren't using a different filesystem for '/' on this > machine. Did you perhaps specify root=/dev/hdXN instead of > /dev/sdaN in grub.cfg ? > > ĸen I rebuilt the kernel after moving to new laptop. Root is on sda3 ext4 only 1 harddrive, sda1 will be boot "NOT used at moment" sda2 extended partition I have not run grub-install No grub.cfg file yet. Hence why I,m using grub prompt "which I should be able to boot from" Also the tab complition at grub prompt shows the correct paths to vmlinuz. I will run grub-install tomorrow But when i done all this on the orginall lfs 7.2 I still ended up with the same panic.
FYI I have set ext4 in kernel config and the mount dev at boot which is also in fstab Booting from grub prompt File systems should be configured in kernel ok. Drivers I have tried various drivers for radeon graphics card. -- http://linuxfromscratch.org/mailman/listinfo/lfs-support FAQ: http://www.linuxfromscratch.org/lfs/faq.html Unsubscribe: See the above information page
