After learning my linux basics, I got interested in making the jump to Gentoo and I made a boot CD. I didn't know I had accidentally made a live CD, but I decided to try it anyway. After loading Gentoo once, I cannot boot Ubuntu anymore, even though it was just a liveCD. I invariably get this:

*Checking root file system...
/ contains a file system with errors, check forced

after checking for a few minutes:

UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY.
(i.e., without -a or -p options)
[fail]

fsck failed. Please repair manually and reboot. Plaes note that the root file system is currently mounted read-only. To remount it read-write:

# mount -n -o remount.rw /

CONTROL-D will exit from this shell and REBOOT the system.

Give root password for maintenance
(or type Control-D to continue):

from there I can get a root prompt. I never did have a crash in Windows, but I still prefer Ubuntu, don't worry.

There's something that you could try while comes the help:

When you get to the Grub or Lilo, select the ubuntu kernel where you boot normally and press e to edit it


Then, select the line that contain the "ro" option and replace that "ro" for rw, press Enter

Then press b to boot the system


Reegards



Bye