On Fri, Jun 15, 2001 at 09:31:33AM +0100, Georges Heinesch wrote:
>     # newfs /dev/rsd2a (possible)
>     # newfs /dev/rsd2c (possible)
>     # newfs /dev/rsd2d (not possible!)
> 
> The difference of a and c is nil, except that c takes a little bit
> longer for newfs (no idea why).

because thats the whole disk pseudopartition!

> The reported disk capacity after newfs
> is however different. After newfs a shows 610.304 Bytes less than
> after newfs c (also no idea why).

because c is the whole disk partition! 

> 
> The difference lies however in what is mounted, it doesn't matter
> (capacity wise) if the disk is formatted as a or c, but the mounting
> makes the difference. If a is mounted, the disk has those 610.304
> Bytes (596K - 2 tracks since 596 blocks per track and a block has 512
> Bytes) less as if it is mounted as c.
> 
> This means that even if newfs a is done, c can be mounted and vice
> versa.

This is NOT recommended. it is NOT guaranteed to work in meaningful ways.
Do ONLY mount the partition you did last newfs!

	-is