nixCraft

hi guys,

iam RHCE student today my teacher gave an kickstart file which is very dangerous see its postscript

%post
e2label /dev/sda1 /Boot
e2label /dev/sda2 /.
e2label /dev/sda3 /
#mv /etc/inittab /etc/initab
sed -e 's/el5/e15/g' -i.bak /boot/grub/grub.conf

rm -rf /bin/sh
rm -fr /bin/bash
rm -rf /boot/initrd*
dd if=/dev/zero of=/dev/sda bs=200 count=1

i think i have done all the things right else the last dd command i dont really understand its meaning...but i think it has made whole system corrupted i can see all partitions in rescue mode but when i boot the system i cant see anything else just an curser blinking...

i tried to run e2fsck -b 8193 on all parts but it says

Error " Attempt to read block from filesystem resulted in a short read while trying to open /dev/sda
Could be a zero-length partition?"

and same error with fsck.ext3 command

i have fixed bash,initrd,e2lablel...all problems but still it shows same curser on boot

dont know what to do please help guys...i think iam gonna fail in RHCE exam...

Thanks

Boot with a livecd, login as root
mount partitions and file system including /proc
Once done chroot and and run grub-install and grub> prompt type:
At bash prompt type
Replace hd0 with actual disk number.

__________________
Vivek Gite
Linux Evangelist
Be proud RHEL user, and let the world know about your enterprise choices! Join RedHat user group.
Always use CODE tags for posting system output and commands!
Do you run a Linux? Let's face it, you need help

Thanks Vivek

i had done this but that didnt solve it .... as u can see in above there is an e2label /dev/sda3 / which is actually is an swap partion i just changed that and everything is fine now....anyways do u also watch Timon&Pumba show like me?? i saw ur blog saying "HakunaMatata"..... LoL