I have an Asus TUF Gaming X570 and have the secure boot OS type as "Other OS". I've been using rEFInd to dual boot with Windows.
On Tue, May 11, 2021, 6:49 PM <the...@sys-concept.com> wrote: > On 5/11/21 4:08 PM, John Blinka wrote: > > Hello, Gentooers, > > > > I just acquired a new Asus board (b560m tuf gaming+wifi) to replace a > failed gigabyte board on my main Gentoo machine. Assembly went well, it > powered up flawlessly first time, it recognized all the hardware... and > then nothing. Cannot get it to boot. > > > > On all my other machines, there’s a bios setting that allows me to turn > off secure boot, which allows me to boot Sysrescue from usb, or Gentoo from > a hard drive. > > > > Not so (as far as I can tell) on this mobo/bios. There’s the usual bios > boot menu and a secure boot submenu. However, the secure boot submenu only > allows me to select between Windows UEFI (with, presumably, secure boot > enabled) and “other OS”. I have no clue what “other OS” implies about > secure boot. It also offers the ability to accept the standard > Microsoft-supplied secure boot keys, or to change or delete them. There > are a few claims on the web that clearing the PK key (and only that key) or > clearing all of the keys is the way to turn off secure boot. I’ve tried > all the combinations; none of them allow me to boot. > > > > The farthest I’ve gotten is to display the Sysrescue usb boot choices. > Selecting any of them seems to (briefly, for a second) start a boot and > then the screen goes blank. Nothing after that. > > > > I haven’t found any mention on the web that Asus boards are particularly > linux hostile, nor much discussion implying that turning off secure boot is > particularly tricky. Most of what I’ve seen is, say, Ubuntu oriented. I > gather that they have gone through the process of getting their secure boot > keys authorized by Microsoft. > > > > Anybody have success getting Gentoo to boot from a recent Asus mobo? > > > > Thanks! > > > > John Blinka > > Try to watch this clip it might help. > > > https://www.google.com/search?sxsrf=ALeKk039uHXT9NuDloVx1Rvp0Mw3kBzEXg:1620773038736&q=asus+board+%22b560m%22+turn+off+secure+boot&sa=X&ved=2ahUKEwjSsfCJ2sLwAhXCpJ4KHdr6Bz4Q5t4CMAx6BAgeEA0&biw=1263&bih=660#kpvalbx=_ygibYJexK87E-gT-gLaYDw55 > >
