Date: Tue, 13 Mar 2001 08:15:36 -0500 From: "Ben" <ben@cahostnet.com> To: "Tarragon Allen" <melange@n12turbo.com>, <freebsd-questions@FreeBSD.ORG> Subject: Re: Freebsd not seeing partitions correctly Message-ID: <002801c0abbf$b320d330$6102a00a@nhqadmin17> References: <005201c0ab85$a9be6080$0216a8c0@eburwd1.vic.optushome.com.au>
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 The problem is not with BSD. I had the same problem. You have to look in your hard driver manual but there should be a jumper to set this so the correct amount comes up. Your current jumper on your hard drive is preventing this. BSD is just accepting what information is being passed to it instead of getting the actual disk amount. Something to that matter, maybe someone can explain this a little better. This was what was explained to me by someone on the list. After I changed my jumper setting, magic everything worked fine. I wonder though if BSD shouldn't fix this because I didn't have this problem with my Windows nor Linux but did with BSD. Well something to keep in back of the mind. After all that's why they call it learning. Ben - ----- Original Message ----- From: "Tarragon Allen" <melange@n12turbo.com> To: <freebsd-questions@FreeBSD.ORG> Sent: Tuesday, March 13, 2001 1:20 AM Subject: Fw: Freebsd not seeing partitions correctly > > From: "Michael J. Turner" <mike@inethouston.net> > > > Yeah I just tried that no go. It must be a freebsd prob i dunno. > > i don't think it's my BIOS being that windows picks everything up > > just fine > > > > I have a 15gig drive with two partitions. one is 10GB the > other > > > > This is what is showing up: > > > Disk Geometry: 256cyls/255 heads/63 sectors = 4112640 sectors > > > (2008MB) > > See if you can set your cylinder count to something like 1002560 > .. > > The reason I pick that number is because : > > presently the geometry says you have a 2.1 gb hard drive > (256 cyl * 255 heads * 63 sectors * 512 bytes = 2105671680 = ~ 2.1 > gb) > > The heads and sector counts are at max (255 and 63) so the only > value you can play with is the cylindar count. You said you have a > 15 gb drive, so : (15*1024*1024*1024 = 16106127360 bytes (15 gb) ) > (16106127360 / 255 / 63 = 1002560 (rounded down) ) > > Keep in mind that all the values kept by the BIOS/OS are actually > virtual; The hard drive takes these values and maps them to the > correct place internally. > > This is the gist of the message I saw on the OpenBSD lists, but I > was unable > to find it, sorry - you might want to exercise some care (backup > important stuff etc) before playing with these values - I can give > no guarantee, having not done this myself (I just know the theory). > > Incidently, 2.1 gb is the hard limit of some old BIOSes. I have > seen Windows boot from a 2.1gb BIOS limited drive and then redetect > it at the larger size post-boot - this could be what is happening > here. If you can get the geometry figures that Windows is using > and then match these in the FreeBSD settings, everything should be > hunky dory... if they differ a bit then there could be problems... > > Hope this helps. > > t > > PS: ... and I haven't even had FreeBSD successfully install on my > system yet (two days of experimenting). :^) > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message -----BEGIN PGP SIGNATURE----- Version: PGPfreeware 7.0.3 for non-commercial use <http://www.pgp.com>; iQA/AwUBOq4dbght7rD8NlhDEQIQKwCeMLLok9Xgc10IU8cAZQIBhz8CXNoAoI6J XWtHmwOdXLV2ymjueEPu4e2z =6o7+ -----END PGP SIGNATURE----- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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