Xref: utzoo comp.sys.amiga:37465 comp.sys.amiga.tech:6339 Path: utzoo!censor!comspec!saul From: saul@comspec.UUCP (saul juliao) Newsgroups: comp.sys.amiga,comp.sys.amiga.tech Subject: Re: Need info on Partitions Message-ID: <2@comspec.UUCP> Date: 27 Jul 89 04:01:24 GMT References: <15745@ut-emx.UUCP> Reply-To: saul@comspec.UUCP (saul juliao) Followup-To: comp.sys.amiga Distribution: na Organization: Comspec Communications Inc. Lines: 64 In article <15745@ut-emx.UUCP> chm@ut-emx.UUCP (Christopher H. Marshall) writes: >I would like to hear from anyone who has gotten a floppy-sized hard >disk partition to work, especially with the Microbotics Stardrive. > >I tried to Mount such a partition on my StarDrive but always got guru >#3. Never made it to the formatting stage. > >Any suggestions or information would be appreciated. E-mail, please. > > Thanks, > Christopher Marshall > chm@emx.utexas.edu > cmft552@hermes.chpc.utexas.edu Hi, I've been able to partition my hard drive with disk sized partitions. I'm using a Comspec SCSI adapter so it doesn't normally use mountlist but it should be straight forward to setup on any system. First you must find out how many blocks are available to the user, this is easily done by asking the hard drive with a SCSI READ CAPACITY command which returns this number. Then you must use this number and come up with three integers that equal to the read capacity or lower. The first number is 2 (there are 2 heads on a floppy), so we have two surfaces to work with. The second number is 11 (floppies have 11 blks/trk), and the third number is the left over Integer for the number of cylinders. firstnumber * secondnumber * thirdnumber <= READ CAPACITY 2 * 11 * ##### <= ######## Remember that SCSI drive are used logically and not physically unlike ST506 drives, so for the drive to work properly these numbers can be anything if you use the formula stated above. For your floppy partitions your cylinder number should be 80, and you none floppy partitions are what ever. The whole drive should be setup as 2 heads, 11 blks/trk. On my system it is all handled through a SCSI preferences provided with my SCSI controller, you might have some equivalent on you system. If not please email me with the type of drive you have I might be able to help with a possible READ CAPACITY number. Note: the more partitions you have the more chip/fast memory is taken up by the system. sorry for the long explanation ... If you have any further question please don'y hesitate to email or call. -- Saul A. Juliao | uucp: saul@becker.UUCP Comspec Communications | or ...!uunet!mnetor!becker!saul 74 Wingold Avenue, |------------------------------------------------ Toronto, Ontario, Canada | Sysop of Toronto's AMIGA Developer BBS (TARDIS) (416) 785-3553 Ext. 365 |------------------------------------------------ Home: (416) 279-3698 | Just another Amiga creature ... -------------------------------------------------------------------------- Any above comments should not be taken as Comspec's nor there opinions.