On Sep 29, 2005, at 3:50 PM, jangar wrote:

hi, i have problem with Gentoo Linux 2005.1 AMD64 installation.
CPU: Athlon 64 2800+
HD SATA Maxtor 80GB
Ati Radeon 9200
etc...

after make partition, LVM2 and compiling kernel and config grub my kernel give me follow message:
VFS Cannot Open root device "sda3" or unknow-block(0,0)
...
Kernel panic ...

i have set grub to follow synax
###############################################
Title Gentoo/Linux
root (hd0,0)
kernel /kernel-2.6.12-gentoo-r10 root=/dev/sda3
###############################################

and my /etc/fstab is configured as follow
###################################################################### # /dev/sda1 /boot ext2 defaults,noatime 1 2 /dev/sda2 none swap sw 0 0 /dev/sda3 / xfs noatime 0 1 /dev/vg/usr /usr xfs noatime 0 0 /dev/vg/home /home xfs noatime 0 0 /dev/vg/opt /opt xfs noatime 0 0 /dev/vg/var /var xfs noatime 0 0 /dev/vg/tmp /tmp xfs noatime 0 0 none /proc proc defaults 0 0 none /dev/shm tmpfs nodev,nosuid,noexec 0 0 /dev/cdroms/cdrom0 /mnt/cdrom auto noauto,user 0 0 ###################################################################### #

what is appened?

you compiled dm_mod as a module, or not at all. enable device mapper support in the kernel.
thanks

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