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Conference turris::digital_unix

Title:	DIGITAL UNIX(FORMERLY KNOWN AS DEC OSF/1)
Notice:	Welcome to the Digital UNIX Conference
Moderator:	SMURF::DENHAM

Created:	Thu Mar 16 1995
Last Modified:	Fri Jun 06 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	10068
Total number of notes:	35879

9256.0. "Can SCU be used to change the (SCSI) Digital specific page ?" by SMURF::SEAGRAVES (Jim, Digital UNIX Tech. Partners. Eng. Grp.,381-6199) Sat Mar 22 1997 18:07


I wanted to change the spin up of the disk so it could be used
on another os. platform.  SCU reports changing the parameter,
but SCU does not seem to save it.  Is this a bug ?

This is on DU V3.2c (haven't checked 4.0b yet)

thanks
Jim Seagraves

==================================================================


fotocd 1024> scu -f /dev/rrz12c 
scu> change pages dec-specific pcf saved

Changing DEC Specific Parameters (Page 25 - saved values):
Spin-up Disable [R:0-1 D:0]: 0

scu> sho pages dec-specific
DEC Specific Parameters (Page 25 - saved values):
Mode Parameter Header:
                 Mode Data Length: 36
                      Medium Type: 0 = Default Medium Type
        Device Specific Parameter: 0x10
          Block Descriptor Length: 8
Mode Parameter Block Descriptor:

                     Density Code: 0
         Number of Logical Blocks: 4110480
             Logical Block Length: 512

Page Header:
                        Page Code: 0x25
               Parameters Savable: Yes
                      Page Length: 23
                  Spin-up Disable: 0

scu> exit

 
fotocd  1025> scu -f /dev/rrz12c
scu> show pages dec-specific

DEC Specific Parameters (Page 25 - current values):

Mode Parameter Header:

                 Mode Data Length: 36
                      Medium Type: 0 = Default Medium Type
        Device Specific Parameter: 0x10
          Block Descriptor Length: 8

Mode Parameter Block Descriptor:

                     Density Code: 0
         Number of Logical Blocks: 4110480
             Logical Block Length: 512

Page Header:
                        Page Code: 0x25
               Parameters Savable: Yes
                      Page Length: 23
                  Spin-up Disable: 1
 




==================================== SCU commands

sh dev
sho pages dec-specific
change pages dec-specific pcf saved
scan edt
sho pages dec-specific
set default savable
set pages dec-specific pcf saved

T.R	Title	User	Personal Name	Date	Lines
9256.1		netrix.lkg.dec.com::thomas	The Code Warrior	`Sat Mar 22 1997 19:27`	2
	It depends on the drive. Only the rz23/24/55/56 use that page. All other drives have jumpers.
9256.2	Same pcf for set/show?	SMURF::KNIGHT	Fred Knight	`Mon Mar 24 1997 16:41`	4
	Also be carefull that you always use the same pcf. Changing the saved page and looking at the current page will always give you different results.