Hi,
> > Your bug is meant to be already fixed (#355252), but I see there are
> > some deviations between Debian and Ubuntu (which you seem to
> > maintain), I'm suspecting there might be problems with Debian code
> > which is only updated about 3 months ago.
>
> Ok, that's a possibility - there were a few patches, and we may have
> ended up applying slightly different ones.
I'll be reviewing these.
> > I thought EFI should work with FAT (I was surprised to see blessing
> > can be applied to HFS+ also), which is the first partition on the
> > internal disk.
>
> There's two different mechanisms of booting a file under the Mac EFI -
> you can either put the filename in nvram, or you can bless a file. I
> believe that the blessing can only be done on HFS+ filesystems.
My best guess is that 'blessing' is required due to EFI not being able
to read HFS+ filesystem; this I need to look into some backing info.
$ nvram -p
boot-image
%02%01%0c%00%d0A%03%0a%00%00%00%00%01%01%06%00%02%1f%03%01%08%00%00%01%00%00%04%01*%00%02%00%00%00(@%06%00%00%00%00%00%00%00%80%02%00%00%00%00x%b6%8dV%0a%84qA%8f%e1$%164^]Y%02%02%04%04%18%004%009%00b%007%009%00d%000%000%000%00%00%00%7f%ff%04%00
SystemAudioVolume n
boot-args 0x0
I don't quite grok this parameter stored as 'boot-image'; but my guess
is that's what's used for the booting before anything EFI starts up...
> > I'm hoping that I can switch default boot through some kind of nvram
> > setting.
>
> You can, but you can't get into the firmware interface without having
> blessed a file first. Which needs MacOS right now.
regards,
junichi
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