[Coco] B&B HD Setup

[tonym]

It's inside an external case, which I haven't opened yet.
Who knows - drive may be bad by now, or might've been bad 10 years ago!


Tony

-----Original Message-----
From: Bob Devries devries.bob at gmail.com
Sent 5/3/2009 10:39:15 PM
To: CoCoList for Color Computer Enthusiasts coco at maltedmedia.com
Subject: Re: [Coco] B&B HD Setup

A couple of questions spring to mind. Does the drive have all its jumpers 
set correctly, and is the termination set correctly?

--
Regards, Bob Devries, Dalby, Queensland, Australia

Isaiah 50:4 The sovereign Lord has given me
the capacity to be his spokesman,
so that I know how to help the weary.

website: http://www.home.gil.com.au/~bdevasl
my blog: http://bdevries.invigorated.org/

----- Original Message ----- 
From: "tonym" tonym at compusource.net
To: "CoCoList for Color Computer Enthusiasts" coco at maltedmedia.com
Sent: Monday, May 04, 2009 10:50 AM
Subject: Re: [Coco] B&B HD Setup


 This setup is sold - I'm just checking out the drive...

 It is STILL going...click...click...click

 going on about 19 hours!


 Tony

 -----Original Message-----
 From: Gene Heskett gene.heskett at verizon.net
 Sent 5/3/2009 8:34:09 PM
 To: CoCoList for Color Computer Enthusiasts coco at maltedmedia.com
 Subject: Re: [Coco] B&B HD Setup

 On Sunday 03 May 2009, tonym wrote:
 How long should the physical+logical format take?

 Physical+logical is maybe 2 or 3 minutes because there is no physical on a
 hard drive, even one that old. Logical consists of writing LNS0, then the 
 FAT
 which is however much of 64kb the number of sectors available on the disk 
 is
 divided by 8 since one bit is a sector for that sized drive, and the root
 directories file descriptor sector, and the root directory itself. This is 
 a
 very quick process and the ramddisk 'myram' actually does this in the few
 milliseconds lag between requesting an access to it with a "dir /r0" 
 before it
 shows the empty directory to you. The click click is the verify phase, 
 where
 it verifies every sector on the disk, and any bad sectors are marked in 
 the
 FATable as used. That takes a while. And the drive has to go back and 
 write
 the next sector of the FAT each time it has verified 256*8 sectors, or 
 2048 of
 them, and that represents 524,288 bytes of disk. That is a 42meg disk, so 
 it
 will do that at least 84 times. Those will be double-clicks when it does
 that, the regular ones are just the next track seeks.

 dcheck won't like that if there are some that fail the read check, so when 
 I
 was using a 30 meg seagate RLL drive, I used dEd to create, byte by byte, 
 a
 file whose file descriptor sector accounted for all those bad sectors. But 
 be
 sure and use a good sector for the file descriptor. :) And the limiting
 FD.SEG count is 48, so if there are more bad sectors than that, you'll 
 need to
 create additional files for. Name them dcheck-bad-sectors-0, dcheck-bad-
 sectors-1 or something similar to remind you to never delete them.

 It's been going since like 2am! I can still hear the click..click...click

 On a 42 megger, on a B&B, it should be about done by now. On my 130 meg
 Maxtor, it was a bit over 30 hours AIR, but the disto interface I used 
 with
 the maxtor is over 2x faster than the B&B. 13 secs for a megaread... I 
 think,
 heck, that was about 20 years ago, on a coco2!

 Drive is a 42M IBM 0665-53 733cyl 7hd box-stock L2 with the B&B drivers...

 You will want to replace that with Nitros9 of course, its faster. :)


 Tony

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 -- 
 Cheers, Gene
 "There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
 -Ed Howdershelt (Author)
 It is a lesson which all history teaches wise men, to put trust in ideas,
 and not in circumstances.
 -- Emerson


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