Path: utzoo!censor!geac!jtsv16!uunet!cs.utexas.edu!usc!polyslo!cosmos.acs.calpoly.edu!dhom From: dhom@cosmos.acs.calpoly.edu (David Hom) Newsgroups: comp.sys.apple Subject: SCSI HD Interleave Summary: Will GSOS allow you to set Interleave Keywords: SCSI, harddrive, interleave, GSOS Message-ID: <13662@polyslo.CalPoly.EDU> Date: 18 Aug 89 03:43:53 GMT Reply-To: dhom@cosmos.acs.calpoly.edu.UUCP (David Hom) Distribution: usa Organization: Cal Poly State University -- San Luis Obispo Lines: 30 Remember SCSI Hacker, the program that allowed you to set your interleave on a hard disk to optimize it for the I/O speed of the GS... ***BOTTOM LINE*** IS THERE ANY WAY TO FORMAT A SCSI DRIVE UNDER SYSTEM SOFTWARE 5.0 TO SOMETHING OTHER THAN 1:1 or 2:1 TO TRY TO INCREASE I/O SPEED? Here's the story... I first did a low level format with SCSI Hacker. Then, I ran HDPartition to write a device partition map. I then booted into the finder and a dialog box asking me whether or not I wanted to format my SCSI drive appeared. I answered yes (knowing that with System Software 4.0 when the finder detected a DPM, it did only a High level (OS) format. System software 5.0 has the facility to choose an interleave of 1:1 or 2:1 for SCSI drives so I chose 1:1 thinking it would realize the drive already had a valid DPM. When I clicked format, the finder did a low level format, completely obliterating my previous interleave. I repeated the lowlevel format and DPM creation and tried to format from the finder and ADU. The Finder and ADU ignored the DPM and proceeded with a lowlevel format. There's the story. Thanks for any help. David dhom@cosmos.acs.calpoly.edu