[Info-vax] questions on initialize/gpt

Simon Clubley clubley at remove_me.eisner.decus.org-Earth.UFP
Sun Jun 21 10:48:49 EDT 2015


On 2015-06-21, Dirk Munk <munk at home.nl> wrote:
> Simon Clubley wrote:
>>
>> AIUI, (not actually having used IA-64 VMS) the GPT.SYS file is just
>> a fake partition created by VMS $ init to allow the contents to be
>> visible from the console.
>>
>> As such (since VMS doesn't support partitions) this means $ init has
>> to do the whole thing and can't use any existing structures because
>> it needs to create the fake partition once it knows where the space
>> for the fake partition has been allocated within the ODS-2/ODS-5
>> volume.
>>
>> The alternative would be for $ init to have code added to merge the
>> existing partition into the newly allocated VMS ODS-2/ODS-5 structures
>> during $ init. I imagine that's a lot more complicated than just
>> creating a fake partition within the new ODS-2/ODS-5 volume.
>>
> OK, but for the boot disk there must be an EFI FAT32 partition 
> somewhere, how is that done? Is it a container file on an ODS disk?

GPT.SYS _is_ the container AIUI.

Simon.

-- 
Simon Clubley, clubley at remove_me.eisner.decus.org-Earth.UFP
Microsoft: Bringing you 1980s technology to a 21st century world



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