/dev/hda1 was not cleanly unmounted, check forced
I had this problem after installing BT3. Every time I booted into BT3, I was faced with a forced check and then a second reboot. So off I went to http://forums.remote-exploit.org and came across THIS POST about the issue.
This is how I fixed the problem:
Become root:
su + password
Edit rc.6 [...]

/dev/ · Backtrack 3 · boot · check · cleanly · fix · forced · rc.6 · solution · unmounted

Dual-Boot Backtrack 3
Well, I have Backtrack 3 installed, and as you know, it uses Lilo, which to be honest I’m not all that keen on.
Using Grub from another distro
I reinstalled Dreamlinux 3.5 and chose “Install Grub to MBR”. So, back to Grub, but now I have to add Backtrack 3 which doesn’t have the [...]

Add · Backtrack 3 · boot · dual-boot · grub · Lilo · MBR · menu.lst

The installed version of Backtrack 3 is missing some files which are needed to use slapt-get and the gslapt gui front-end package managers.
I had to go looking for the files but you can find them here:(right click “save as”)
1. gnupg-1.4.7-i486-1.tgz
2. gpgme-1.1.4-i486-1.tgz
3. libassuan-1.0.1-i486-1.tgz
Once they have all been downloaded to your home directory, issue these commands to [...]

Backtrack 3 · fix · Guide · Howto · missing · package · slapt-get · solution