
Bypass the Boot Manager #3
Chapter 1, Booting Linux
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9
HACK
With your boot partition mounted to /bootmnt you can note the names of
your kernels and associated files (such as initrd.img files). Now you need to
mount the main root partition so that you can modify your bootloader con-
figuration file. First, create the mount point:
foo@bar:~# mkdir /rootmnt
Now mount it:
foo@bar:~# mount /dev/discs/disc0/part4/rootmnt
Of course, your root partition might be something other than part4 as speci-
fied in this command. With the partition mounted in /rootmnt, you need to
change the root partition to that mount point so that you can specify a dif-
ferent root partition from the one the installer is running. This will enable
you to access your root partition and run commands from it. To do this, use
the
chroot command on /rootmnt:
foo@bar:~# chroot /rootmnt
When you have run this command, take a look at the directory structure
with
ls, and you will see that your normal root partition is visible.
At this point in this process, you have access to your normal range of appli-
cations, and if you have a network connection, you can use this opportunity
to copy important files and directories to another computer, just in case you
can’t work out how to fix your kernel or bootloader problem. You can find
more information on making network backups with scp and rsync in “Make
Network Backups”
[Hack #83].
To restore your system ...