Wednesday, July 14, 2010

[LINUX_Newbies] Booting from external hard drive

 

Hi folks,
Although a relative newbie, I can usually sort out most problems myself, with the help of Google. However, I have googled this particular problem till my eyes are near to bleeding!
Up to a few days ago, I was running a dual boot with XP on my first hard drive (though hardly ever using it) and Mint Elyssa on the second.
I have now changed the second hard drive for a larger one and installed Mint 9 Isadora on it. I backed up all of my data and set up a separate home partition. Everything is running smoothly and I am delighted with it.
Now to the problem - the hard drive I removed has gone into a USB enclosure and still contains Elyssa. I want to be able to boot from this drive on occasion. I have tried searching for info on changing the MBR, setting up a fresh grub install etc. I have tried using grub-install from a terminal but this doesn't seem to find the drive (although it does show, both within my Mint 9 and when I run from a live CD). I also tried supergrubdisk but couldn't find anything that helped.
I know that my computer is capable of running from an external hard drive as I successfully installed a KDE version of Mint 9 on another hard drive to try it out. But that was a fresh install from scratch - this time I have an OS that I don't want to lose as yet. I'm sure I'm missing something very simple but would be very grateful if someone could point me in the right direction.
Thanks in advance.
Frank

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