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1. Embed this notice
   Garrett Wollman (wollman@mastodon.social)'s status on Sunday, 08-Jun-2025 09:07:47 JST Garrett Wollman

   @ireneista I'm hoping there may be something in the DMI or ACPI data.

   • Embed this notice
     feld (feld@friedcheese.us)'s status on Sunday, 08-Jun-2025 09:07:46 JST feld

     in reply to
     @wollman @ireneista from stack overflow but they didn't provide a canonical source:
     
     > SMBIOS table for Type0, Bios Characteristics Extension 2, Bit3.
     
     So maybe you can pull that with dmidecode or biosdecode
   • Embed this notice
     JdeBP (jdebp@tty0.social)'s status on Monday, 09-Jun-2025 01:18:59 JST JdeBP

     in reply to

     • feld

     @feld @ireneista @wollman

     The canonical source is actually cited by the #FreeBSD manual page, as "see also". (-:

     https://man.freebsd.org/cgi/man.cgi?smbios(4)

     #SMBIOS #EFI

     feld likes this.
   • Embed this notice
     feld (feld@friedcheese.us)'s status on Monday, 09-Jun-2025 01:22:51 JST feld

     in reply to

     • JdeBP
     @JdeBP I don't think I follow. These man pages don't tell you how to determine if the hardware supports UEFI if you're currently booted in BIOS mode
   • Embed this notice
     JdeBP (jdebp@tty0.social)'s status on Monday, 09-Jun-2025 02:18:20 JST JdeBP

     in reply to

     • feld

     @feld

     What that manual page tells you is what the source to read is, to confirm that that StackExchange answer is on the level. It gives you the title, publisher, and document ID of the spec; in its "see also" section. DMTF stands for Distributed Management Task Force.

     Mastodon mangled the URL that I entered so that the closing bracket was outside of the hyperlink. Here's an alternative query form of it, for completeness.

     https://man.freebsd.org/cgi/man.cgi?query=smbios&sektion=4

     #SMBIOS #EFI

     feld likes this.
   • Embed this notice
     feld (feld@friedcheese.us)'s status on Monday, 09-Jun-2025 02:18:46 JST feld

     in reply to

     • JdeBP
     @JdeBP oh wow ok I overlooked that and only paid attention to the efi man page link one line above it 🥲
   • Embed this notice
     JdeBP (jdebp@tty0.social)'s status on Monday, 09-Jun-2025 04:51:46 JST JdeBP

     in reply to

     • feld

     @feld

     Heh! That explains it. (-:

     feld likes this.