I've recently acquired (through a friend who stopped using it) a Toshiba Satellite L500 - Core i3 (3rd gen?), 4G RAM. I'm determined to get Linux onto it (preferably Debian). I thought I had succeeded: I booted from a Debian USB stick, installed to the HD. All appeared to go well, but the system won't boot. It returns to the Boot Menu and says "HDXXXX has failed." What the search engines are telling me is that with this generation of Toshibas, the problem is generally Secure Boot / CSM etc. Which makes sense, but ... there is absolutely zero mention in the BIOS/UEFI ("Phoenix SecureCore Tiano Setup") of "Secure Boot," "CSM," "Legacy," or "UEFI." Acccording to notes I found online, "SecureCore Tiano" has "full support" for legacy booting. Another issue with this machine is my mixed success booting from USB sticks: I have an old-ish USB stick I built myself that has GRUB and a large menu of ISOs: works great on most systems, won't boot on this thing - probably because it's an old-style BIOS-boot only(?). One of my ideas was to upgrade the BIOS: it appears there's a newer version available, but it's NOT available from Toshiba, which is the only place I'd want to download it from. The rest look like dubious secondary download sites (if you know one you consider reliable, let me know). What I read online said that Fedora's installer puts an EFI partition on the HD as part of the install, while Debian doesn't. And that may(?) be why I can't boot from my Debian install? So ... I downloaded the Fedora installer, put it on a USB stick ... and no joy: the Toshiba doesn't recognize the Fedora USB stick as a bootable item. Would this be because I burned it on a "Legacy" system? Is there a fix for that? Except ... I'm about 99% sure the Debian Installer USB stick was created on the same machine. Worst case, I can stick the HD from the Toshiba into another machine, install Fedora on it, repartition to make room for Debian, put the HD back into the Toshiba ... but that's getting damn complicated and annoying. As always - any suggestions welcomed. -- Giles https://www.gilesorr.com/ gilesorr@gmail.com