Author Topic: Booting with USB - Error 12  (Read 7638 times)

Offline HoBu

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Booting with USB - Error 12
« on: 2009/09/10, 16:10:11 pm »
I had a dual boot system (Win XP SP2 and SuSe maybe v8.2) on my Fujitsu Siemens Amilo Pro V2000 laptop, all on one HDD with several partitions. As I don't use Linux that often & urgently needed more disk space, my father just stomped it down by erasing the partition and giving it a new hard drive letter where Linux was on it :/ Now, I still had the bootloader in the beginning where I could choose between both OS, so no trouble yet. Yesterday I decided to defragment my HDD, and after rebooting the system, I've got a blank screen with GRUB _ in the upper left corner. Can't press any keys, tried to boot via CD drive with:

Knoppix (newest & older version), Win XP & Win 2000, Ultimate Boot Disk,

but no reaction except Operating System Not Found. Again no keys working.

Thanks to a recommendation from another forum, I tried to use Super Grub Disk on a USB stick, which even worked! But what I am getting is:

Booting command-list
Error 12: Invalid device requested
Press any key to continue...

After that the menu where I can choose between
a) usbshift and
b) configfile (hd0,0)/boot/sgd/sgd.lst
but I'm still getting that same error message.

What should I do now???
I'm not familiar with Linux commands BTW  :'(

Offline HoBu

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Re: Booting with USB - Error 12
« Reply #1 on: 2009/09/10, 16:32:00 pm »
BTW if this might help:

I ued Knoppix v6.0.1 to mount and work the USB stick. I typed in the console according to the German wiki:

Code: [Select]
cd /media/sda1

tar -xzvf /home/knoppix/Desktop/super_grub_disk_deutsch_usb_0.9795.tar.gz

sudo -s


Then in Grub I typed in:

Code: [Select]
device (hd0) /dev/sda

root (hd0,1)

After that, I got the message Filesystem type is fat, partition type 0x6. Then:

Code: [Select]
setup (hd0)


I had to rework some parts as I really do not have a clue about Linux commands  :-\

Offline adrian15

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Re: Booting with USB - Error 12
« Reply #2 on: 2009/09/15, 21:03:46 pm »
Try to mount the pendrive from the live cd, edit /boot/sgd/menu.lst, /boot/grub/menu.lst and /boot/grub/sgd.lst and remove the usbshift lines.
Unmount the pendrive. Reboot from the live cd.

After that you should not get an error 12.
See what happens when you try Advanced -> Grub -> Uninstall Grub -> Selecting 2nd Hard Disk (hd1).

Because 1st Hard Disk (hd0) will be your pendrive actually.

If you have liked this piece of advice please consider donating to the Super Grub Disk project.