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I am going to guess that your linux partition/drive is before the windows one. So for whatever reason you have destroyed your linux book loader and now the bios is just looking at your linux partition and saying "WTF mate?".
What you need to do is boot off that floppy into RedHat. Do you know if you were using lilo or grub? If you are using lilo you have to run lilo as root from a command prompt and it will reinstall itself. If you are using grub then run grub and type the following commands:
The x,y are the indicators for your /boot partition (or your / partition if you don't have a separate /boot partition). If it is the first partition on the first disk it would be hd0,0, 2nd partition on the first disk is hd0,1, 3rd partition on the 2nd disk would be hd1,2, ect.
The setup (hd0) command will install grub on the systems MBR.
Distribution: Gentoo, Redhat 9, SuSE 9.0, 9.2, Win XP
So, I managed to break my boot loader again. I am attempting to re-install my OS on a new (larger) hardrive and after much struggling opted to simply re-install rh9 on the new drive and remove the old HDD.
I do however need the old drive still and figured I can simply install the OS again on the new HDD and get it up and running using all my config files on the old drive. With the old HDD still the master I installed the new drive and ran a rh9 setup on the new drive. When given the option to include the new installation in the bootloader, I did so. When rebooting I now get an option to select the old and rew installation. The new installation works fine and the machine boots up. Trying to boot into the original installation however gives me the following error message:
Error 13: Invalid or unsupported executable format
I also can not mount the old drive while booted into the new installation. I probably can restore the bootrecord using the suggestion in the 1st reply to this post but am unsure what this will do to my new installation.
Please help, I need to be able to mount my old drive while booted into my new installation and if possible be able to select either one of the two installations at boot time.