[xubuntu-users] OT? Problem booting Lenovo T61 with cloned hdd in select bay
mail at hellmutweber.de
Sat May 28 23:24:13 UTC 2011
I'm using Xubuntu 10.10 on my Lenovo T61 Laptop.
The partition table of my system disk is:
Gerät boot. Anfang Ende Blöcke Id System
/dev/sda1 1 3824 30716248+ 7 HPFS/NTFS
/dev/sda2 * 3825 4334 4096575 83 Linux
/dev/sda3 4335 8158 30716280 7 HPFS/NTFS
/dev/sda4 8159 77825 559600147 5 Erweiterte
/dev/sda5 8159 9433 10241406 82 Linux Swap
/dev/sda6 9434 24731 122881153+ 83 Linux
/dev/sda7 24732 77825 426477523+ 83 Linux
/etc/fstab contains the lines:
/dev/sda6 / ext4 errors=remount-ro 0 0
/dev/sda2 /boot ext2 defaults 0 0
/dev/sda7 /home ext4 defaults 0 0
/dev/sda5 none swap sw 0 0
(The NTFS partitions are used by Windows Systems (Native and with kvm)
The boot menu is defined in /boot/grub/grub.cfg and uses UUIDs to
identify the hdd partitions.
I used to make clone copies of my system disk (normally shown as
/dev/sda as above) with the program 'dd_rescue' which produces just a
physical copy of the source hdd.
The big advantage of this procedure is that in case of a problem I can
just put the clone disk into the machine and it will boot normally.
Obviously, this procedure requires to boot with the clone disk in the
select bay tray. It seemed to work perfectly with gentoo linux which I
used until half a year ago.
Some Time ago (unfortunately I don't remeber the exact moment or
circumstances) I noticed that booting with 2 identical disks as system
disk and in the select bay tray I have the following mount-situation:
/dev/sdb6 on / type ext4 (rw,errors=remount-ro,commit=0)
/dev/sda7 on /home type ext4 (rw,commit=0)
/dev/sda2 on /boot type ext2 (rw)
Working in this situation will produce an inconsistent state of my disks.
I tried so far:
* change boot device order in setup/startup
* overwrite the clone disk's UUIDs with randomly generated ones
* change set root entry in /boot/grub/grub.cfg
Any idea is welcome
Dr. Hellmut Weber mail at hellmutweber.de
Degenfeldstraße 2 tel +49-89-3081172
D-80803 München-Schwabing mobil +49-172-8450321
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