Second hdd install, boot loader queries, multiboot

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http://www.linuxquestions.org – Hello, I hope I am posting in the correct place. I currently have 2 operating systems on my main hdd: Ubuntu and WinXP My current setup - [storage NTFS partition, solely data][17GB WinXP partition][{extended partion}Ubuntu + swap]: http://imgur.com/FUq5u.png I have a second SATA hdd that I would like to install Arch Linux on to. It uses GRUB Legacy, and Ubuntu uses GRUB 2. I would like to know how I would go about booting this, and figure out where my current bootloader is installed to. i.e. /dev/sda or /dev/sda5 (the / ubuntu partiton) Thanks PS - perhaps chrooting the drive via Ubuntu (HowTos)