Xenix FS history lesson please

[Lennart Sorensen]

On Thu, Feb 21, 2008 at 08:46:28PM -0500, Madison Kelly wrote:
> I've been trying to get some documentation done on my program, and I 
> want to have a section on the various file systems. However, I am having 
> next to no luck finding information on, or the differences between, the 
> Xenix '/root' and '/usr' filesystems. I even looked up the old Xenix 
> programming manual (closest I could find to a sysadmin doc) from 1979, 
> but could not find the differences.
> 
> Anyone here remember anything about those filesystems? (IDs 02h [Xenix 
> /root] and 03h [Xenix /usr])
> 
> I'm not worried so much about nitty gritty details, just a high-level 
> idea of what they were and what the differences between those two were.

They might be the same filesystem, but use different partition IDs to
tell the boot loader or kernel which is which.  Microsoft used to think
partition IDs were a good way to tell what kind of partition it was
after all.  Most modern system consider them a hint at best.

--
Len Sorensen
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