FINALLY GOT TINYXP TO WORK ON MACBOOK PRO, HERE'S HOW:
All right so I am now posting from TinyXP Rev09 installed on my macbook pro. Its a little bit tricky but it can be done.
The main problem is that Boot Camp is an *******. When you use the boot camp assistant to partition the hard drive and start the installation the disc will either freeze at the tinyxp splash screen or you will get a disc error. However, if you have a regular copy of windows (still can be pirated, but just non-altered such as tinyxp) you can get it to work with a little swap trick.
So here's what to do:
Run the boot camp assistant from osx and hit start installation with your regular copy of windows inserted. With this it should start the DOS-like installation. When it gets to the choice of where to install windows you will see a boot camp partition. You need to format that partition to NTFS, but do not confuse formatting with deleting! Make sure you select the boot camp partition to install windows onto and when it asks if you would like to format choose NTFS. Afterwards it will copy a few files over and restart. Upon this restart hold the Option key and you will arrive at the boot screen. At this point switch the disc to your Tiny XP Rev 09 and boot from that disc. You will no longer get the disc read error or freeze at the splash screen. Continue to choose whichever version of the installation you like and it will goto that same windows DOS-like installer again. When prompted with the choice of where to install windows choose the boot camp partition once again. It will tell you that there is already a windows folder on the partition (from when it copied files over with the regular windows disc). Select the option to delete these files and install again. Now you will be installing from TinyXP and you should be completely unattended from here on out. Enjoy!
Did you ever have any problem having your Tiny XP CD mount? I'm using toast 8 to burn the TinyXP.iso file on a cd and once I reboot holding down the option key the CD does not show up. I did a partial install of Windows XP disk like you suggested but no mount of Tiny XP CD. Is there something obvious I'm missing when burning the .iso file?