Thank so much! i try your hint I'll ggive you novice Best regards Ernatalo Il 14/09/2010 15.39, m.roth at 5-cent.us ha scritto: > Theo Band wrote: >> On 09/13/10 17:48, Ernatalo su Gmail wrote: >>> i know that this is a good thing, but i've only 1 partition. >>> /boot and /root are in the same partition that i convert from ext3 ti >>> ext4. >>> everything works fine until this morning. I "rebooted" the server many >>> time from the "convertion" >>> but i had never upgrade the Centos before today. >>> with the update the trouble begun! >>> from Installation DVD i can see the /dev/sbd1/ (hd0,0) and with fdisk -l >>> i can see that it's an ext4 partition. >> Nothing to worry if you can still mount the disk while booting from the >> DVD. From the grub shell you can also issue a find command (find >> /boot/grub/grub.conf). Perhaps the disk is mixed up and it is now hd1 >> and hd0 is you external drive? >> >> (hd1,0)/boot/grub/grub.conf >> >> If you start typing "(hd" and then use command completion, you will see >> which drives are seen by grub like hd0 or hd1 etc, and what partitions >> exist). >> >> root(hd1) >> configfile /boot/grub/grub.conf >> will get you back to the boot menu. (It's all from my head, so mind some >> typos) > What he said. Also, note that filename completion is enabled in the grub > shell, so if you type > root (hd0,0) > then try > kernel /vm<tab> > and don't get anything, try > root (hd0,1) > or 2, or > root (hd1,0) > etc, until you get a completion. At that point, you'll know what your root > disk is (hd0, or 1, or whatever). Once you boot up and have a running > system again, run > $ grub-install /dev/<whateveryour/bootdrive is), like > $grub-install /dev/sda > > Quirk: regardless of what it is, /boot/grub/grub.conf seems to see the > physical drive /boot is on as (hd0)... and don't confuse, say, /dev/sda1 > with grub's (hd0,1): two different nomenclatures. > > mark > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos >