Date: Fri, 02 Apr 1999 15:52:57 -0800 From: Darren Pilgrim <dpilgrim@uswest.net> To: George Halek <bsdlist@cr343877-a.wlfdle1.on.wave.home.com> Cc: newbies@freebsd.org Subject: Re: Disk geometry question. Message-ID: <37055859.E945BB40@uswest.net> References: <Pine.BSF.3.96.990402112542.281B-100000@cr343877-a.wlfdle1.on.wave.home.com>
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[this should be sent to -questions] George Halek wrote: > > I know I have a disk geometry problem because I get the "Missing Operating > System" message. > > I mucked around with the geometry because I wanted to max. the usage of > the blocks. The geometry which sysinstall assigned wasted about 5M of disk > space. > > I am running a AMI bios 486 with a 1G scsi drive using the Adaptec VESA > 284X controller. > > I tried to max the blocks by using a geometry with 1 head, 63 sectors and > some very high cylinder number. I though this was possible because SCSI > allows you to map the drive however you wish. However this does not seem > to work. > > Even though I am using an ADAPTEC controller which has its own bios. Am I > still contrained by some parameters? > Eg. Boot partition within 1024 cylinders. > 64 sector max. > 17 head max. > or anyting like that? IIRC, unless your 486's main BIOS has a setting for SCSI disks, the entry it has doesn't effect the geometry for the SCSI drives; the SCSI controller takes care of this for you. OTOH, that space loss you see could just be a misscalculation, it happens. Besides, you're only losing 5MB out of 1GB, does it really matter that much to you? -- dpilgrim@uswest.net /\ / __ Our lies are merely the gryph@mindless.com / \/OC/URNE truth of another world ICQ: 29880099 Death is not a kill -9, just a DALnet: anim0s make world and shutdown -r now PGPKey available To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-newbies" in the body of the message
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