This is also called a PARALLEL INSTALL or by another name. All that is needed is to install your first XP but don't dedicate all the disk space to that install. Leave your choice of space unpartitioned.
Install the XP the second time and use the unpartitioned space for the new install and the XP installer will setup the dual boot menu.
I want to have two versions of XP Professional set up as a dual boot system. I want to use one version for general use, and the other version will be bare for strictly recording music. I see lots of help on setting up dual boot systems with two different OS's, but NOT with just using XP. It would be ideal to be able to have a menu to choose from right when I turn on the computer.
Any ideas anyone?