Re:
> IIRC, YMMV there is nothing "unsafe" about trying to access 73 GB on 5.5  (of course 4GB cap on LDEV1 regardless of disk physical capacity) -- except 
...

I remember, when Allegro encouraged HP to handle big disks, that I
had found some definite problems in some obscure things ... and that's why we filed
a number of bug reports (including JAGad48770 in 2000) and then lobbied with MikeP,
Louis Runnestad, and the CSY lab manager at the time to get really big disks supported.  
(Ironically, that triggered extra work for me...
I had to make sure that De-Frag/X supported them, too :)

Unfortunately, I can't recall the details of what things had problems.  Some of the things
were offline utilities (e.g., DISKCOPY (?), DISCUTIL's SAVE (?) command) that could
be significant.  Some were cosmetic (e.g., incorrect output from DISCFREE).

In the back of my mind, I have a suspicion that on some releases MPE might 
create some disk-based data structures too small in a way that could potentially
cause an overwrite of data ... but I really don't remember what it was, or which
MPE release (might have been *very* long ago, sorry!).

BTW... *which* powerpatch level of 5.5?  

My old notes say that 5.5 with PowerPatch 5 had an "official" max disk size of
18 GB and that I thought I'd seen a working 36 GB drive on a system.  The same notes
say that base 5.5 officially had a 9 GB max disk drive size.

Out of curiosity: why is the system limited to 5.5?

Stan

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