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marcan42's profile
Hector Martin
Hector Martin
Hector Martin
@marcan42

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Hector Martin

@marcan42

If it ain't broke, I'll fix it! I'm porting Linux to Apple Silicon Macs at @AsahiLinux. http://patreon.com/marcan  | http://github.com/sponsors/marcan 

Tokyo, Japan
marcan.st
Joined May 2009

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    1. Hector Martin‏ @marcan42 Jan 7
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      A lot of people are unclear on how Apple Silicon machines boot and what it means for people coming from a UEFI perspective, so I wrote up a comparison https://github.com/AsahiLinux/docs/wiki/M1-vs.-PC-Boot … (note: current best understanding, there may be inaccuracies). TLDR iBoot + Recovery ~= UEFI firmware.

      8 replies 36 retweets 229 likes
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    2. Karl‏ @supersat Jan 8
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      Replying to @marcan42

      wait, if Recovery Mode is macOS, is there a syscall you can use under macOS to boot another OS?!

      1 reply 0 retweets 0 likes
      Hector Martin‏ @marcan42 Jan 8
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      Replying to @supersat

      Presumably it's rebooting with some flag :)

      1:42 AM - 8 Jan 2021
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        1. Allison Husain‏ @ezhes_ Jan 8
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          Replying to @marcan42 @supersat

          iirc there's an nvram flag to set the next boot target. SIP protects nvram so you can't trigger a boot into another OS unless the current one is already "compromised".

          1 reply 0 retweets 3 likes
        2. Erin  ✨ 💽‏ @erincandescent Jan 8
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          Replying to @ezhes_ @marcan42 @supersat

          A bit like how there's an EFI var you can set to once-only run a different OS next boot

          0 replies 0 retweets 2 likes
          3. End of conversation

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