Norton problems

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+ User FidoNet address: 1:3634/12.42
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 A> I don't know about the AV stuff, having never used it, but in those  
 A> days Norton Utilities for the PC (and the Mac version) were the  
 A> mutt's nuts. Many a time I've used Diskedit to repair trashed file  
 A> systems.  

agreed there... i still have a programming book written by him around here
somewhere... this was before or just at the beginning of his anti-virus days...
this was also back in the time when steve gibson's spinrite actually did
something to the placement of data on the HD... i still have a couple of 20Meg
MFM HDs that i put on a RLL controller and low leveled them to 30Meggers...
then put spinrite on them to adjust the low level pie slices to put each sector
under the flying head as soon as it was needed... interleaving was the term
used... ya can't do that since the early IDE drive days...

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Re: Norton problems

"mark lewis" wrote:

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Would that be his Programmer's Guide to the IBM PC & PS/2, otherwise
known as "The Pink Shirt Book"? I have that.

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Sounds like fun!



Re: Norton problems


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A>>> I don't know about the AV stuff, having never used it, but in those
A>>> days Norton Utilities for the PC (and the Mac version) were the
A>>> mutt's nuts. Many a time I've used Diskedit to repair trashed file
A>>> systems.
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If you took a MFM drive such as a ST-225 ands put it on a RLL controller you  
get a 50% increase in disk space and a 50% increase in drive performance.  
Changing the interleave of the rive could optimize the efficiency of the  
throughput which effective became a ST-238.  Gibson's software changed the  
interleave of Modified Freqency Modulation (MFM) and Run Length Limited  
(RLL) drives at a cost.  However most didn't know the controller firmware  
had the capability to that without buyingf Gibson's software.  All you had  
to do was run the DOS DEBUG.EXE utility and enter G=C800:5  which basically  
ran software stored in ROM at C800 offset 5 and it brought up a menu where  
you could change the drive interleave, low level format, enter defects, etc.

--  
Dave
Multi-AV Scanning Tool - http://multi-av.thespykiller.co.uk
http://www.pctipp.ch/downloads/dl/35905.asp


Norton problems

+ User FidoNet address: 1:3634/12.42
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 DHL> If you took a MFM drive such as a ST-225 ands put it on a RLL
 DHL> controller you  get a 50% increase in disk space and a 50%
 DHL> increase in drive performance.

exactly... 20Meg gained 10Meg and became 30Meg ;)

 DHL> Changing the interleave of the rive could optimize the efficiency  
 DHL> of the  throughput which effective became a ST-238.

exactly :)

 DHL> Gibson's software changed the interleave of Modified Freqency  
 DHL> Modulation (MFM) and Run Length Limited  (RLL) drives at a cost.

what cost?

 DHL> However most didn't know the controller firmware  had the  
 DHL> capability to that without buyingf Gibson's software.  All you  
 DHL> had  to do was run the DOS DEBUG.EXE utility and enter G=C800:5  
 DHL> which basically  ran software stored in ROM at C800 offset 5 and  
 DHL> it brought up a menu where  you could change the drive  
 DHL> interleave, low level format, enter defects, etc.

we always started there... we had to to lowlevel the drives... but the problem
was that documentation and whatnot would say to set the interleave at 5... so
you do that and the drive works but leaves something to be desired... toss
spinrite at it and it would determine that maybe an interleave of 1 was the
best... or possibly 7 or 3... it all depended on the drive... i've seen
identical drives interleaved at 3 on one and 4 on the other and they'd have
maybe 100k/s differences in transfer speed... but the goal was to get the
interleave right so that the next sector of data was arriving under the head
when it was needed and not having to wait for another revolution because the
sector was already running past the head...

the IDE drives came out and lowleveling a drive wasn't done via the controller
any more... in fact, it was all too possible to mess up a drive... why? some
bright spark came up with spiral interleaving in which the slices are the same
length but the outside ones can pack more data into them then and smaller
interior ones near the spindle...

)\/(ark
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Re: Norton problems

+ User FidoNet address: 1:3634/12.42
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 G> I like the old Norton Utilities, great stuff. I probably still have  
 G> the diskettes laying around on my bookshelf. When Peter was still
 G> active the stuff was quality code. There was a period of about 2
 G> years after the Symantec merger where the quality was still there
 G> but there was a decline with every version of bloat after that.

yup! that was when it all went down hill... the same thing happened with stee
gibson's stuff around the same time, too... mcaffee was another one that went
sour back then, as well... i might even still have some early versions of his
original anti-virus ;)

)\/(ark
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+ The FidoNet News Gate (Huntsville, AL - USA)        +
+ The views of this user are strictly his or her own. +
+ All data is scanned for malware by Avast! Antivirus +
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