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- Path: po.CWRU.Edu!njg2
- From: njg2@po.CWRU.Edu (J. Norell Guttman)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Max xfer value for older Syq ext.
- Date: 14 Mar 1996 13:14:57 GMT
- Organization: Case Western Reserve University, Cleveland, OH (USA)
- Message-ID: <4i964h$kfm@madeline.INS.CWRU.Edu>
- Reply-To: jchuck01@barney.poly.edu
- NNTP-Posting-Host: kanga.ins.cwru.edu
-
-
-
-
- Can someone tell me what max-xfer & mask value settings are appropriate for
- an external Syquest 88 meg 5.25 inch hard drive?
-
- On my A4000/040 I have the Syq hooked up to an Emplant scsi controller, with
- the latest chip and '.device' software. 1st I use HDToolBox and define a new
- type for the cart, then i low-lev format, then I go to partition and make one
- 88 meg partition and set the filesystem for DC-FFS. I then save changes and
- exit HDToolBox.
-
- Now i use scsimounter to mount the drive, then I tried to format the disk
- when the icon appeared on the workbench, but as it got 1/2 way through, it quit
- saying it couldn't format one of the cylinders. I tried twice.
-
- Well the cart was fine when the Syq was on a PC (and it was previously an
- formatted Amiga anyways) so I know its good. SO I bring it to my frineds 3000
- hook up the Syq there, use HDToolBox there to prep it, then format it there
- and it formats fine. So I can now mount it on my 4000 with scsimounter and use
- it, but, sometimes on reads or writes of big files, it 'freezes' the computer
- momentarily until its done with the packet, but yesterday, when I had 3 DCC
- sends going from the Syq it 'froze' the computer and wouldn't release till I
- finally hit the eject button on the drive. I put the disk back in and the xfer
- continued and only one file got corrupted needless to say. I believe that its a
- problem of simply tweaking the mask/xfer values, but since I dont have any
- manuals for the drive, I don't know its specs.
-
- The values that are currently in there now are 0x0fffffe=Mask,
- 0xffffff=Max-xfer file system block-size=512 and buffers=30 as set and
- reported by HDToolBox. There are other values like stacksize, priority,
- prealloc, interleave and buffermemtype which I dont really know how they work.
- Their values are 600, 10, 0, 0 and 0 respectively as reported by a 'GenML'
- created mountlist.
-
- If anyone has any experience or a mountlist for a similar setup and isn't
- having any problems, please respond here or via email. Thanks.
-
- Jim
-
-