Path: utzoo!attcan!uunet!samsung!sdd.hp.com!zaphod.mps.ohio-state.edu!rpi!bu.edu!orc!inews!iwarp.intel.com!psueea!parsely!agora!billsey
From: billsey@agora.uucp (Bill Seymour)
Newsgroups: comp.sys.amiga
Subject: Re: Help! w/ Trumpcard & Seagate drives
Message-ID: <1990Jun11.154037.26176@agora.uucp>
Date: 11 Jun 90 15:40:37 GMT
References: <46200076@uxa.cso.uiuc.edu>
Reply-To: billsey@.UUCP (Bill Seymour)
Organization: Betazoid Central
Lines: 42

In article <46200076@uxa.cso.uiuc.edu> jhc00614@uxa.cso.uiuc.edu writes:
:
: [stuff about his hard drive]
:
:(one VERY odd thing was that when I told the program the drive had 607
:cylinders, it recognized only 606....when I changed it to 606, it only
:recognized 605.  Therefore, I put it back to 607, and it formatted it with
:606 and works like a charm to this day.)

	Remember that format starts at cylinder zero... So if it ends at
606, it has really formatted 607 cylinders. 0-606...

:     Anyways, to get to my question.  The ST-296N has the same problem in the
:Trumpcard utilities.  The program lists the ST-296 as having:
:     Capacity (# blocks) = 160,140
:          # cylinders    = 785
:  
:     Seagate drive specs for the 296N are 165851 blocks.  Well, I'd like
:to format the drive w/ the Seagate specs and get the extra space, but I
:don't know how to figure out the number of cylinders to go along w/ it.
:     Cross multiplying gives me an approx. figure of 813 cylinders....
:Is this correct?  If somebody can offer a solution or suggestions, I'd 
:really appreciate it.

	That's close enough to correct for you to use. With embedded SCSI
drives, cylinders, surfaces and blocks per track don't really mean that
much. All blocks on a embedded SCSI drive are just numbered from the start
of the drive. The smarts on the drive itself do all the rest for you. With
the Seagate drives, some of the code the drive uses internally is stored
on the first few sectors. That's why things don't exactly come out when you
divide number of heads into total blocks...

:                                       Thanks,
:                                        Jason
:                                      jhc00614@uxa.cso.uiuc.edu



     -Bill Seymour             ...tektronix!reed!percival!agora!billsey
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