Ok, thank you! I take back all the many curses I directed at Microsoft when I thought I would have to buy a new machine
.
It looks like PTT is a feature on my Thinkpad 450s firmware, which is a 2015 computer, so some older hardware is eligible:
"Security Chip
Selection
• Discrete TPM
• Intel PTT
If you select Discrete TPM, you can use a
discrete TPM chip with TPM 1.2 mode. If you
select Intel PTT, you can use Intel Platform
Trusted technology (PTT) with TPM 2.0 mode.
Note:
Intel PTT can be used with Windows 8 or later
operating system."
It looks like I will have to convert my Windows installation from MBR to GPT. I found a tutorial on how to do this without reinstalling Windows, but I can't vouch for it yet:
https://www.windowscentral.com/how-convert-mbr-disk-gpt-move-bios-uefi-windows-10I also will have to do the same with my Linux installation, which is on a second hard drive:
https://serverfault.com/questions/963178/how-do-i-convert-my-linux-disk-from-mbr-to-gpt-with-uefi#Both of these look like they could really mess things up if something goes wrong. I have had success in the past using "dd" in linux to make full disk images, so I'll do that before I try either of these tutorials.
https://www.cyberciti.biz/faq/unix-linux-dd-create-make-disk-image-commands/Thanks for the help researching this. I'll try these out on another day - maybe a rainy day, with better sleep, and no small kids are running around the computer making demands!!!
Cheers and have a good weekend.