HELP! ubuntu not starting!

[rockager]

help! i have a double boot configuration with ubuntu 10.04 and windows xp
when i start ubuntu the 'ubuntu' screen comes but the login screen does not appear. i tried to open ubuntu in recovery mode but it said

sck from util-linux-ng 2.17.2
sck from util-linux-ng 2.17.2
sck from util-linux-ng 2.17.2
usr not cleanly mounted
check forced
home contains a file system with errors
ubt contains a file system with errors
usr contains a file system with errors
mountall: event failed
sck from util-linux-ng 2.17.2
sck from util-linux-ng 2.17.2
sck from util-linux-ng 2.17.2
usr not cleanly mounted
check forced
home contains a file system with errors
ubt contains a file system with errors
usr contains a file system with errors
mountall: event failed
home: unattached inode 954097
home: UNEXPECTED INCONSISTENCY
RUN fsck MANUALLY
mountall: fsck /home[300] terminated with status 4
mountall: filesystem has errors: /home

i've tried using older kernels also
just for info: my home and usr directories are in separate partitions & i've named my ubuntu partition as 'ubt'.
i edited grub.conf file before this happened ( to comment out older kernel boot options) but grub is working porperly and i am able to boot into windows without any issues.

[hazel]

Well, as it says "Run fsck manually", that would be a good place to start. You will need a rescue CD; I believe your Ubuntu installation disk will serve that purpose. Boot from it, open a terminal and run the fsck program on each partition that has given you errors - without trying to mount them. Hopefully this will clean up the filesystem errors that are giving you grief.

[rockager]

thanks for the suggestion. i'll try doing it.