Date: Sun, 22 Oct 2000 19:44:32 +0800 From: Trent Nelson <tpnelson@echidna.stu.cowan.edu.au> To: hackers@FreeBSD.org Subject: Conflicting C/H/S values Message-ID: <39F2D320.74A760FF@echidna.stu.cowan.edu.au>
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Could someone explain to me why the following HDD BIOS Geometries don't represent the values proposed by the drives. What am I missing? (snippets from boot -v) BIOS Geometries: 0:030c7f3f 0..780=781 cylinders, 0..127=128 heads, 1..63=63 sectors 1:03fefe3f 0..1022=1023 cylinders, 0..254=255 heads, 1..63=63 sectors 2:03fefe3f 0..1022=1023 cylinders, 0..254=255 heads, 1..63=63 sectors 3:026dfe3f 0..621=622 cylinders, 0..254=255 heads, 1..63=63 sectors 0 accounted for These don't correlate to the C/H/S values proposed by the drives: ad0: 8063MB (16514064 sectors), 16383 cyls, 16 heads, 63 S/T, 512 B/S ad1: 9787MB (20044080 sectors), 19885 cyls, 16 heads, 63 S/T, 512 B/S ad2: 3079MB (6306048 sectors), 6256 cyls, 16 heads, 63 S/T, 512 B/S ad3: 4892MB (10018890 sectors), 10602 cyls, 15 heads, 63 S/T, 512 B/S I'm running 5.0 as of mid-September, but I don't think that's the issue as Windows tends to exhibit the same behaviour. Regards, Trent. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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