koziarz@halibut.nosc.mil (Walter A. Koziarz) (07/05/90)
I'm at a loss to explain it, but I can't seem to convince 'PREP' to format this disk with 512 byte sectors (alledgedly, the default). It keeps forcing 1024 byte sectors on me, without me issuing the '/k' switch. I have PREPped the drive in a z150 in an attempt to TOTALLY corrupt the system-parameters area on the disk. Then re-ran z100 PREP. Same result! 1024 byte sectors (implies 4096 byte clusters!). Is there anyone who has an idea on this?? Btw, I used the same PREP executable on this drive as I used on my home machine (home machine HAS 512 byte sectors and 2048 byte clusters). Walt K.
bjones@ssc-vax.UUCP (Robert F. Jones) (07/07/90)
In article <2485@nosc.NOSC.MIL>, koziarz@halibut.nosc.mil (Walter A. Koziarz) writes: > I'm at a loss to explain it, but I can't seem to convince 'PREP' to format this > disk with 512 byte sectors (alledgedly, the default). It keeps forcing 1024 > byte sectors on me, without me issuing the '/k' switch. I have PREPped the > drive in a z150 in an attempt to TOTALLY corrupt the system-parameters area on > the disk. Then re-ran z100 PREP. Same result! 1024 byte sectors (implies > 4096 byte clusters!). Is there anyone who has an idea on this?? It has been awhile since I've played with this, but 1024 bytes <> 4096 byte clusters.... Grant it, you may need the MS-DOS developer's package for the Z-100 to tweek it, but.... Hmmm... you must have a newer version of PREP than I do. My version would not do 1024 byte sectors without the /K switch, and if you had a drive over 32 megabytes, you either had to use the /K switch or limit yourself to the 32 meg. limit with PREP. What are the parameters of the drive, i.e. what are you telling prep for such things as the number of heads, the number of cylinders, etc.? Good luck......rfj..... -- ---------------------------------------------------------------------------- standard disclaimer applies ========================== phone: (206) 773-2102 uucp: uw-beaver!ssc-vax!bjones or ssc-vax!bjones@beaver.cs.washington.edu snail: The Boeing Company, P.O. Box 3999, M/S 8K-04, Seattle, WA 98124-2499
koziarz@halibut.nosc.mil (Walter A. Koziarz) (07/10/90)
In article <3433@ssc-vax.UUCP> bjones@ssc-vax.UUCP (Robert F. Jones) writes: > [I deleted my description of attempting to get 512 byte rather than 1024 byte sectors -- Walt K.] > >It has been awhile since I've played with this, but 1024 bytes <> >4096 byte clusters.... Grant it, you may need the MS-DOS well, actually, it DOES imply 4096 byte clusters if the drive in question has 4 heads and has 1024 byte sectors. >developer's package for the Z-100 to tweek it, but.... again, I didn't need this to convince it to 'happen' with my home-drive > >Hmmm... you must have a newer version of PREP than I do. My version >would not do 1024 byte sectors without the /K switch, and if you had >a drive over 32 megabytes, you either had to use the /K switch or >limit yourself to the 32 meg. limit with PREP. What are the >parameters of the drive, i.e. what are you telling prep for such >things as the number of heads, the number of cylinders, etc.? I don't, off-hand, recall; I *DID* use the parameters provided in the ZDS documentation for the Miniscribe 2012 drive (they're in the PREP.COM section of the manual). And, no, I don't think I have a newer version of PREP than you do, mine has just run amok. > >Good luck......rfj..... THANKS! Walt K.