Ok let me give you a full synopsis.
I have two hard drives connected.
One has a windows partition along with a zenwalk partition.
the other was all for ubuntu.

When i booted the PC, GRUB would show up and allow me to select which OS to load.
Now, i deleted zenwalk. So now i have two hard drives: One with windows and the other with ubuntu.
I also did a fixmbr and fixboot on the Harddrive with windows.

Now when i try to boot from the hard drive that has ubuntu installed, i get a "error loading operating system" message (or something similar) when booting from it.

any thoughts?

May have to boot up a live distro and repair grub. I think fixmbr will replace the mbr with a dos based loader (Which does not know or even care about linux OS's installed.)

Thank you jstephens84.
Which live distro do you recommend?
The Ubuntu CD is sort of like a LIVE CD also, but i dont think i could fix grub from that.

Wait a minute.
The Hard Drive with Ubuntu installed does not have windows in it. It only has Ubuntu and a swap partition.

Grub knows that and is intelligent enough to pick that up but the dos mbr isn't. As far as a live cd you could boot up the Ubuntu cd.

If you still get the grub bootup screen, you can enter the grub shell. From there you can manually load in the kernel and the initrd. Once Ubuntu boots up you can reinstall the boot loader. The grub shell has tab completion, so you will be able to find the kernel even if you aren't sure which partition it is on.

Well i did this: https://help.ubuntu.com/community/Re...cf3d3f0600175a

the problem is that when i type "rescue", the memory test takes forever ( i waited an hour) then i started doing "skip this test"...and kept skipping tests over 100 times (no, seriously. over 100).

so i don't know.

if there a way to install it from a thumbdrive or from this windows HD?