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Re: Why it's so difficult to fix PowerMac booting for good



Hallo,

On 10.05.23 11:36, John Paul Adrian Glaubitz wrote:
Does your approach include a blessing tool?

Not that I know of. The grub image (a copy of GRUB's `core.elf`) in the
root of the OF bootstrap partition is configured in the OF environment
var `boot-device`. OF therefore knows what file to boot and from where.

I want to avoid messing around with the NVRAM
as this approach is very fragile.

Why is that?

A blessed bootloader, on the other hand, is automatically
displayed in the boot menu and booted unless any alternatives are present. It's therefore
much more robust.

I don't know if the described approach is more robust, but I believe you
can't have both FAT as OF bootstrap partition **and** blessing. Reading
through [4]:

```
[...]
Furthermore, the CoreServices folder is
"blessed", which means that it's directory ID (analogous to an inum
in FFS terminology) is recorded, in the HFS+ volume header.
[...]
```

...makes it look like it is specific to HFS(+). I am hence not even sure
if the graphical boot menu will work with FAT as OF bootstrap partition.
I never used it because I booted the machines from OF.

Cheers,
Frank


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