I work at an IT Helpdesk and we build a custom GRML image which we write to our pen drives. We use it, for example, to quickly live boot Debian/Ubuntu PC's and

I work at an IT Helpdesk and we build a custom GRML image which we write to our pen drives. We use it, for example, to quickly live boot Debian/Ubuntu PC's and run a script that mounts all necessary file systems (including pseudo file systems). This makes it really easy to quickly chroot into a broken system right at a users desk. On our Linux installations we have separated most of the directories into different LVM partitions. Such as '/home', '/usr', '/var' and of course '/' (the root). Just last week I helped a user live boot his system and ran a fsck on his '/home' partition. We had "frozen" the system and hard reset his computer which led to a couple of corrupt blocks and inodes.