[ale] Stupid user tricks when building a new kernel...

[Eric Z. Ayers]

something helpful - if you get to a boot prompt and can mount your
root partition:

e.g.

# fsck /dev/hda1
#mount /dev/hda1 /mnt

then you can use the 'chroot' command to run stuff off of your root
partition:

e.g. 
# chroot /mnt /bin/bash

then, you're operating almost as if you booted into single user
mode. 

-Eric.


Eric_Brubakken at aoncons.com writes:
 > 
 > 
 > Yesterday I attempted to build an new kernel on my pc that is running RH6.1.   I
 > have built kernels before, but yesterday I did something wrong during the build.
 > After going through the build process and rebooting I am getting these errors:
 > 
 > Using LILO for booting
 > 
 > new kernel -
 >      Error: kernel is wrong compression
 > 
 >      - System Halted
 > 
 > Booting with the Old kernel -
 > 
 >      Error 0X01 ( seems to be in some type of loop - just keep repeating Error
 > 0X01)
 > 
 > When I try running my boot disk I get these errors -
 > 
 >      VFS: Cannot open root device 08:32
 > 
 >      Kernel panic: VFS: unable to mount root fs on 8:32
 > 
 >      then the system hangs
 > 
 > If I use the boot/install disk using
 > 
 >      boot: linux rescue
 > 
 >      The system will boot me to a bash# prompt.  I am able to find all my files
 >      and such, but I can't execute any binary files i.e. - I can't even run vi.
 > 
 > Since I wasn't getting anywhere with the above, I decieded to try and install
 > RH7.0.  I got a few minutes into the install process and the Install program
 > informed me that one of the devices was not unmounted cleanly and to reboot my
 > old OS.  Isn't that special....
 > 
 > Not getting anywhere with anything, I then tried to 'upgrade' my RH6.1 with
 > RH6.1 to see if this could cure my problem.  Well the upgrade seemed to work,
 > but when the system rebooted LIFO starts by then hangs when the third letter of
 > LIFO i.e. LIL
 > 
 > So with my limited experience I am not sure just how to proceed from here.  I
 > did back up files during the build process, but I am not sure I got everything
 > backed up correctly.  Am I completely hosed or is there something that can be
 > done?  Would I be able to upgrade to 7.0 without loosing any of my init scripts
 > - firewall, samba and such?
 > 
 > Thanks for your time
 > 
 > Eric
 > 
 > 
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