I installed Ubuntu onto an old work laptop a while ago and of course I love it, however I will have to hand this laptop back into work at sometime as it has become pretty old now, so I want to uninstall Ubuntu before I do. Problem is work pushed out an update to the machine which encrypts all partitions, since then although Ubuntu is still shown in the boot loader, it won't boot as I assume it has been encrypted and this is blocking it. So is there anyway of removing Ubuntu from the machine without needing to actually boot into it? As all the tutorials I have seen ask you to boot into Ubuntu.
The laptop is running win xp 32bit SP3 as its original OS and Ubuntu 12.04