Grub Error 21

[.:subarusti:.]

right so i installed linux on HD 2, and it said it would reboot off the hard drive it then said:
GRUB Loading Stage 1.5
GRUB loading please wait...
ERROR 21

i fear ive lost everything and i dont know what to do, anyone who can help reply to here <email address hidden>

[Dennis Kaarsemaker (dennis)]

Did you rearrange disks after installing?

[Andrea Veri (av)]

try to take a look here
http://www.ubuntuforums.org/archive/index.php/t-120959.html
or here
http://www.linuxquestions.org/questions/showthread.php?t=394165
which release?and if the answer will be dapper i ask you if you get the same error with breezy release?

[Brian Murray (brian-murray)]

We are closing this bug report as it lacks the information, described in the previous comments, we need to investigate the problem further. However, please reopen it if you can give us the missing information and feel free to submit bug reports in the future.