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Re: grub configuration, boot.



On Wednesday December 23 2009 19:49:27 TNWestTex wrote:
> Bugzilla from yehielb mail ru wrote:
> > hello,
> >
> > I have been trying to look over many solutions and tutorials with no
> > luck. my goal was and still is, to clone my internal 40GB hard-drive
> > which contain
> > fc11 on to my external usb-hard-drive 500GB.
> > aftar many tutorials I finally used Clonezilla.
> > that worked great and the hdd is cloned.
> > the problem is that the boot configurations are the same, and so when I
> > boot
> > from the usb-hdd I actually run from the internal hdd.
> > and now for the question.
> > since this usb-drive is meant to be able to boot on every computer,
> > I can I config grub to boot (run) the OS in the same drive it is being
> > loaded
> > from?
> >
> > for example:
> > my current setup is that the fc11 internal drive is sdb and the usb-hdd
> > is sde
> > and the same grub is (clone) on both drives.
> 
> A problem is that many systems switch the order of the drive assignments on
> the boot from the USB drive.  The /boot/grub/device.map file has to reflect
> what the system is doing.  This order is passed to grub with the line
> 
> root (hdX,n)
> 
> in /boot/grub/grub.conf where X is the drive and n is the partition number
> of the partition with /boot.
> 
> If you run in a root terminal session the commands
> 
> fdisk -l
> 
> to see exactly what the device names are.  Then run
> 
> vol_id -u /dev/sdXn
> 
> Where X is the drive and n is the partition number.  You will get the UUID
> for the partitions.  You can then edit /boot/grub/grub.conf and make the
> kernel line specify explicitly the partitions you want to use with the
> syntax
> 
> root=UUID=.......
> 
> An additional complication is that some utilities get confused when there
> are multiple drive partitions with the same label.  Running from the
> internal drive without the usb drive, you can use e2label to change the
> labels on the internal drive.
> 
> If you are still having trouble, post the output from fdisk -l, UUIDs and
> your grub.conf file for more help.
> 
> Robert McBroom
> 
thanks
I am using GRUB 0.97 and apparently the option root=UUID=... is not supported
or maybe I am doing something wrong.

this is my grub.conf:
-------------------------------------------------------------------------------------------------------------------
hiddenmenu
default 0
timeout 2

title Fedora (2.6.30.9-96.fc11.i686.PAE)
root (hd0,0)
kernel /vmlinuz-2.6.30.9-96.fc11.i686.PAE ro root=/dev/mapper/VolGroup-lv_root 
nomodeset rhgb quiet vga=0x318
initrd /initrd-2.6.30.9-96.fc11.i686.PAE.img

title Fedora (2.6.30.9-90.fc11.i686.PAE)
root (hd0,0)
kernel /vmlinuz-2.6.30.9-90.fc11.i686.PAE ro root=/dev/mapper/VolGroup-lv_root 
nomodeset rhgb quiet vga=0x318
initrd /initrd-2.6.30.9-90.fc11.i686.PAE.img

title Fedora (2.6.29.6-217.2.8.fc11.i686.PAE)
root (hd0,0)
kernel /vmlinuz-2.6.29.6-217.2.8.fc11.i686.PAE ro root=/dev/mapper/VolGroup-
lv_root nomodeset rhgb quiet vga=0x318
initrd /initrd-2.6.29.6-217.2.8.fc11.i686.PAE.img

title FC11 test
root=UUID=175472b3-e4e5-4208-beeb-56eec49c20aa
kernel /vmlinuz-2.6.30.9-96.fc11.i686.PAE ro root=/dev/mapper/VolGroup-lv_root 
nomodeset rhgb quiet vga=0x318
initrd /initrd-2.6.30.9-96.fc11.i686.PAE.img

title FC11 usb-clone
root=UUID=175472b3-e4e5-4208-beeb-56eec49c20aa
kernel /vmlinuz-2.6.30.9-96.fc11.i686.PAE ro root=/dev/mapper/VolGroup-lv_root 
nomodeset rhgb quiet vga=0x318
initrd /initrd-2.6.30.9-96.fc11.i686.PAE.img
-------------------------------------------------------------------------------------------------------------------

one more problem I now have, the UUID are not unique and the clone drive 
partitions has the same UUID's as their relative source partitions.
thanks again for your help
YB.


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