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Conference hydra::amiga_v1

Title:AMIGA NOTES
Notice:Join us in the *NEW* conference - HYDRA::AMIGA_V2
Moderator:HYDRA::MOORE
Created:Sat Apr 26 1986
Last Modified:Wed Feb 05 1992
Last Successful Update:Fri Jun 06 1997
Number of topics:5378
Total number of notes:38326

1706.0. "Help with an RD31" by RBW::WICKERT (MAA DIS Consultant) Wed Sep 21 1988 00:22

    
    I'm trying to use an RD31 (that works on a VAXmate) with my new
    A2090 controller.
    
    I use the "Install HD" option from the hard disk software floppy
    and everything works fine. I tell it the drive is a ST506 Seagate
    ST225 and default everything else.
    
    When I try to format the drive it gets into the 300s and hangs.
    The drive access light is on but it doesn't complete verifying the
    that block.
    
    Any suggestions? What about bad blocks? There are two listed on
    the drive and I'm not sure what I should do, if anything, about
    them.
    
    Thanks,
    Ray
    
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1706.1WJG::GUINEAUJust a Window in TimeWed Sep 21 1988 08:377
What are the parameters your taking as defaults?

Maybe the formatter is having trouble with a bad block.

JOhn    

1706.2Bad SectorsRAVEN1::EVERHARTWed Sep 21 1988 13:3811
    	This may not be of much help, but when I used to work for
    Integrated Support Systems, I had to format hard disks occasionally,
    and I ALWAYS had to tell the formatter to flag off the bad sectors.
    It is possible that your formatting program is attempting to format,
    then verify a bad sector, and when it won't verify, it keeps trying
    to format it.  I suggest that you write down the bad sectors, and
    set up the bad sector table in your formatter.  (I hope it has one)
    Let me know if this is of any help.
    
     - Chris
    
1706.3PREPMTWAIN::MACDONALDWA1OMM 7.093/145.05/223.58 AX.25Wed Sep 21 1988 15:435
    Sounds like you haven't run the PREP program that comes with the
    A2090 controller. The prep program asks you to input the bad block
    information.
    
    Paul
1706.4RBW::WICKERTMAA DIS ConsultantWed Sep 21 1988 16:3313
    
    I have run PREP but I'm not quite sure of the format.
    
    The tag on the disk has several columns:
    
    	Cyl  Hd  Sec  Bytes  Bytes/In
    
    I know what Cyl, Hd and Sec is. What about bytes and bytes/in?
    PREP asks for Cyl, Hd and offset. I'm not too sure what they mean
    by offset...
    
    -Ray
    
1706.5WJG::GUINEAUJust a Window in TimeWed Sep 21 1988 18:0515
    
>    	Cyl  Hd  Sec  Bytes  Bytes/In

This is the standard way of listing defects.

"Bytes" is the length in bytes of the defect.
"Bytes/In" or Bytes from Index is the starting location, reference to index,
of the defect.


Offset probably wants the Bytes/In field.


John    

1706.6I'll try a RD53RBW::WICKERTMAA DIS ConsultantThu Sep 22 1988 12:0417
    
    It seems the format commands hangs a different blocks - last night
    it didn't get past block 20!
    
    So, I'm going to try an RD53 from work. The problem is I don't know
    what type of drive it is to tell PREP. Do I need to use "UNDEFINED"?
    If so, does anyone know all the answers to the questions? I guess
    I need # of Cyls, # of heads (8, I think) and something called the
    write comp cyl?
    
    Also, does anyone have a 53 running with a 2090? I know it should
    work (ST506 is ST506, right?) but I'd feel better knowing someone
    had already done it.
    
    Thanks,
    Ray
    
1706.7its here in notes...somewhere ;-)PCCAD7::BAEDERD. Scott DTN 237-2961 SHR1-3/E19Thu Sep 22 1988 18:597
    cant remember the exact note but I know its here somewhere in the
    files...try dir/title=disk  or hard   somewhere back about 6-9 months
    ago if I remember...I think it was John Gineau (sp? - sorry, never
    could spell) or someone from the LEDS group...
    
    seek and ye shall find.....scott
    
1706.8WJG::GUINEAUNot enough moving partsFri Sep 23 1988 09:479
All Set. He sent mail...


FWIW:  RD53 is a Micropolis 1325, 8 heads (0-7) and 1024 cyls (0-1023).
	It does NOT use precomp so set it to some value greater than 1023
	(or turn it off).

John
1706.9MTWAIN::MACDONALDWA1OMM 7.093/145.05/223.58 AX.25Fri Sep 23 1988 10:481
    How 'bout the poop on an RD31?
1706.10WJG::GUINEAUNot enough moving partsFri Sep 23 1988 17:518
After 3 attempts at getting these two lines in!

RD31 - Seagate ST-225.  4 (0-3) heads, 615 (0-614) cylinders, precomp at 256.

John