Software :: Cannot Run Debian After Installing It - Does Not Appear In Grub

I just installed debian squeeze and at finish it asked me if it write the MBR with gurb. I say yes, but after restarintg, squeeze doesnot appear in grub. I also have debian lenny in the same PC. I installed debian squeeze in

Code:

/dev/sda9: UUID="85383eab-fce7-450b-b713-c6bdfd57f53a" SEC_TYPE="ext2" TYPE="ext3"

I try to add it to menu.lst this way:

Code:

titleDebian GNU/Linux, Squeeze kernel 2.6.32
root(hd0,8)
kernel/boot/vmlinuz-2.6.32-trunk-amd64 root= UUID=85383eab-fce7-450b-b713-c6bdfd57f53a ro quiet
initrd/boot/initrd.img-2.6.32-trunk-amd64

When I choose it from grub menu, seems to run, but in 5,6 seconds it stoped and tell me doesnot find some files, like /proc, /etc/fstab, etc... Files I have in /boot (in squeeze particion) are:

Code:

initrd.img-2.6.32-trunk-amd64.bak
grub System.map-2.6.32-trunk-amd64
initrd.img-2.6.32-trunk-amd64 vmlinuz-2.6.32-trunk-amd64

I also tried SGD and when I choose squeeze, appear a black screen with promt

Code:

GRUB>

How can I run squeeze I just installed.