Toshiba P100 - How can I boot from CD?

[SRiv]

I have an old Toshiba Satellite Pro P100 (PSPA1C-TM30XE) It is running Windows XP. I can't get it to boot from the CD drive. I have a Linux disc I want to run from boot. The BIOS doesn't have the security mode feature that many of the newer Toshiba's have so, there is no place to change from UEFI mode to CSM mode. I can press F12 during POST to get the boot priority list but even if I choose CD/DVD, it just boots from the HD. Win XP seems to be running but it's really sluggish so I'm hoping to run Linux on this laptop.

 

[SRiv]

After struggling for so long with this issue and finally posting a question in this forum... I found the problem. The CD drive was just not working. It shows power but it is not showing up in the BIOS. I plugged in an external DVD drive into the USB port and was able to boot from it.