Odd disk image format... .552?

Nico de Jong nico at farumdata.dk
Tue Dec 22 03:17:35 CST 2015

---- Original Message ----- 
From: "Mike Ross" <tmfdmike at gmail.com>
To: "General Discussion: On-Topic and Off-Topic Posts" 
<cctalk at classiccmp.org>
Sent: Tuesday, December 22, 2015 9:41 AM
Subject: Odd disk image format... .552?

> Recently found some long-lost images of 5 1/4" floppies that were sent
> to me...  10-15 years ago. Here's one of them:
> http://www.corestore.org/RP06.552
> I've never seen that .552 file extension before. Any clue? It's
> possible that refers to a version number rather than some obscure disk
> image format...
> (They are allegedly Setasi Shelby RP12 boot disks btw :-) )
> Mike
Seems to be a MSDOS 5.0 boot disk, with just one important program, 
RP06.EXE, on it, and then some support programs.
As far as I can see, it is a physical backup. Could the 552 just be a serial 
number `?

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