My laptop has reached Nirvana with Debian Squeeze, everything works out of the box, and I very happy with the stability of the system. I don't feel the software is outdated, because I anyway install some applications I need or like directly from source. However, I still want to be able to run Debian testing, and see how my system evolves. Enter "chroot".
With chroot I can run more that one Linux Distro and more than one X-Server with out the need to stop my work and reboot my laptop. This is just great.
Here is how to do it, assuming you already have a partition with a Debian installed on in do the following (if you don't have a partition with Debian installed, I suggest you take a look at "debootstrap"):
First make a location where you will work as the root of the new debian, in my case:
$ su -# mkdir /debian-sec
now mount that partition, in my case /dev/sda5:
mount /dev/sda5 /debian-sec
enable important devices so the new Debian will work as expected:
mount -o bind /proc /debina-sec/procmount -o bind /dev/ /debian-sec/dev/ mount /dev/pts /debian-sec/dev/pts -t devpts mount -t sysfs /sysfs/ /debian-sec/sys
finally change the root with chroot:
chroot /debian-sec/ /bin/bash
If you want to run a secondary X-Server, do the following inside the chroot:
chroot # vi /etc/gdm/gdm.conf # do s/vt7/vt9/ in [servers] sectionchroot # /etc/init.d/gdm start
this will start another X-Server on vt9, to which you can switch with to
Cheerios, Linux and Debian !
UPDATE: The last section about GDM in chroot seems not to work with gdm3...
chroot # vim /usr/share/gdm/gdm.schemas
change the following keys:
<shema> <key>daemon/FirstVT</key> <signature>i</signature> <default>9</default> </schema>
What does work ?
Switch to tty1, login as root, and chroot into the chrooted debian. Then chanage to with "su - "
now start the X server as the following:
startx /usr/bin/fluxbox -- :1&
startx /usr/bin/gnome-session -- :1&
startx -- :1&