Originally Posted by daweefolk
i want to install slackware onto my usb hard drive (not FROM it) and i need help deciding where to install the bootloader. Should I choose to install it to the usb drive, or the main hd of the computer i'm using to install it? (usb is /dev/sdc, main is /dev/sda)
Daweefolk> OK, there are somewhat complicated methods to add an installation on one hard drive to a grub menu on ANOTHER. I will even give you a link to help you along, HOWEVER I highly recommend you do not take this route.
I would recommend just installing normally on the USB drive, meaning you'll have two partitions on it: one relatively small [around a GB for swap space] and the rest of the space to the, or separate /home directories, etc... whatever suits you. This should but a new grub menu on to the USB drive, then all you have to do is set your boot priority to boot from the usb drive. Obviously if it boots from the usb drive, you won't get to choose to boot to the other hard drives, but removing the usb drive or rearranging the boot order fixes this problem.
I have an Ubuntu 9.10 installation with all the apps I use, and I did it the above way. The nice thing is that I can plug this USB drive into virtually any computer [that I have tried so far] and it loads and works fine, Compiz 3d rotating desktop and all. [teehee, I just tried it on somebody's netbook the other day and the 3d rotating desktop still worked]...
Anyways, srry this isn't slackware specific, but grub is grub...
PS: Even though I don't recommend taking this approach, the choice is yours... Here's a page that has links to several other pages relating to dualbooting with two hard drives