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I installed ubuntu linux gutsy on my external harddrive and now my computer needs the external harddrive to start up every time, even though I have windows on the internal harddrives.
Basically without my external hard drive connected I get a error 21 (no operating system detected) even though windows is on my internal drives.
Is there a way to uninstall ubuntu linux fully from the external hard drive and remove it from my boot list? If theres a way to boot the computer straight to windows when the external hard drive is disconnected thatd be cool too.
If you are installing Linux on external hard drives, its probably best to install the boot loader on the MBR of the external hard drive instead of the MBR of the internal hard drive. You can do this by booting into Ubuntu and doing something like
sudo grub-install /dev/sdX
Replace /dev/sdX with the device name of your external hard drive. You can then setup your BIOS to boot from CD, USB and Hard drive. This way, if the USB disk is found, the system boots Ubuntu and if its not found, the system boots Windows. After that download SuperGrub disk, disconnect the external hd, boot using the SuperGrub disk and choose the option to remove grub from the MBR of the internal drive. This will enable you to boot into Windows without the external hd being connected.
SuperGrub disk is a rescue cd, so you have to burn the iso to a cd (burn the iso as a cd image) and place it in your cd drive and reboot the machine. It will start a live Linux system that you can use to do various things to your bootloader e.g. reinstall grub or remove it from the MBR.
If you have completely removed Linux and just wish to run Windows on your machine, you need to rewrite the Master Boot Record of your hard drive to get rid of the Linux boot loader.
# Boot from the Windows CD
# Select R for Recovery Console
# Type the number of your Windows install (usually 1) and hit enter
# Type in the administrator password
# Type fixmbr and hit enter
# Answer yes when it asks you to overwrite the MBR
# Type exit, which will then reboot the system and everything should work
I thought Windows could see the partitions, just didn't recognise their filesystem type. That's what I remember the last time I used Windows' disk management tool. Anyway, you should be able to boot from your Ubuntu CD and use fdisk or cfdisk to remove the partitions.