[tde-users] I broke it and I don't know how

Greetings, one and all. Not even remotely a TDE problem, but you lot are known to throw a float to a drowning man even if he fell off some other boat. System is an Asus vanilla AMD-64 running Debian Trixie and TDE Testing. Was running fine, long uptimes. Got up yesterday to an exploded reboot, so something had taken place during the night. Did a power-off reboot. Now it booted to the point of /dev/sda1 clean. Tried a reboot from grub using linux advanced mode. Once I got it to boot all the way in rescue mode. Fiddled around, found nothing wrong, rebooted. That's the last time I saw TDE. Poking around, I saw a case similar to mine in which it was suggested that the bios needed upgrading. I looked, and the date on my bios was in 2013, leading ne to think it was possible that this was true, even though I'd changed nothing since it had been booting just fine. So on another machine I d/led the latest bios file and flashed it. Which of course wiped all my settings because bioses seem to be dumb. Now, when I start the machine it of course has the bios banner, and then grub, and then: ACPI BIOS Warning (bug): Optional FADT field Pm2ControlBlock has valid Length but zero Address: 0x[many zeros]/0x1 (20240322/tbfadt-611) amd_pstate: the_CPC object is not present in SBIOS or ACPI disabled r8169 0000:05:00.0: can't disable ASPM; OS doesn't have ASPM control /dev/sda1: recovering journal /dev/sda1: clean, 435913/4579328 files, 5183079/18310546 blocks If I do a warm reboot, it dies at the bios banner. After a minute it tells me the boot device (normal hard drive) is not supported and to set the comparability mode, press F1 to set it. Which I do, and bext boot gives me: grub> Which is no use at all so I reboot and now again have a normal grub menu. This time I select Advanced mode for my Linux boot. Now it boots happily along. And I can boit into Debian, TDE, the whole works, though now I am in rescue mode (which looks and acts just like any ordinary boot). Which is where I am now. In slight terror it will crash again, but otherwise wondering how I can proceed to make things normal again, Anyone have any ideas? dep Pictures: http://www.ipernity.com/doc/depscribe/album Column: https://ofb.biz/author/dep/