View Full Version : [ubuntu] Help!!! Ubuntu on USB HDD Messed my booting

August 27th, 2009, 05:17 PM
hello everyone, i'm kinda new on linux, so i tried to install Ubuntu 8.10 on USB HDD.

Believe it or not all works fine, but i can't boot windows without my USB HDD.

I believe that i messed it by installing some boot file or somthing on hdd and my bios put it as priority. sorry for bad english and help!!! what should i do to get to run windows without external hard drive?:confused::confused::confused::confused: btw> it's on my Hp compaq 6720s laptop

August 27th, 2009, 05:25 PM
I think when Ubuntu installs, it changes the XP's MBR. You'll probably have to use an XP disk to fix it.
It might help if you had grub on the internal hdd too.
There should be plenty of threads related to fixing MBR with XP. ..such as this one -

ps if you follow that thread and fix the issue, You can probably set up your hdds so you can boot from either by having grub on the usb-hdd, then selecting it through the boot device list with F12 at startup. You might want to have a look for threads related to setting up a persistent usb install, so it would be like a portable OS.

August 27th, 2009, 06:01 PM
You installed GRUB to MBR of internal drive. Now when you boot it looks for the menu.lst file on the external disk. If the external isn't plugged in when you boot it can't find menu.lst thus the GRUB error. if you are only going to use the external when you want Ubuntu I would restore Windows bootloader to MBR of internal disk (see here (http://ubuntuforums.org/showthread.php?t=1014708)) and put GRUB on MBR of external disk. This way when you boot without the external disk windows boots. When you plug in the external GRUB will take over & you can boot into Ubuntu. Of course your machine must be capable of booting from USB for this to work, if you need more detailed instructions post back.

August 27th, 2009, 06:31 PM
Problem is that my windows is media center, and for repair it require floppy disk. First thing is that i dont have that floppy and second my laptop doesnt got floppy reader