Date: Tue, 1 May 2001 18:46:54 +0200 (MET DST) From: j@uriah.heep.sax.de (J Wunsch) To: freebsd-scsi@freebsd.org Cc: "John R. Shannon" <john@johnrshannon.com> Subject: Re: Disk geomerty Message-ID: <200105011646.f41Gksj70945@uriah.heep.sax.de> References: <01043013530600.00636@pablo.johnrshannon.com> <200104302212.f3UMCYU67449@uriah.heep.sax.de> <01050108595100.00646@pablo.johnrshannon.com>
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"John R. Shannon" <john@johnrshannon.com> wrote: > When I set the disk 9318/64/32 with fdisk, FreeBSD installs but will > not boot. Fiddling with the SCSI BIOS settings has no effect; the > BIOS reports 1025/255/63. You should always have fdisk use what the BIOS reports. IMHO that should be the default for fdisk, anyway. (I'm not sure, i haven't been using fdisk tables for years now, all my disks are `dangerously dedicated', thus i don't need to care for the fdisk crap with its ficticuous `cylinders' &c.) > I can fdisk the geometry to 1024/255/63, install and boot. The only > problem is that the only 8.475 GB is used on a 9.1 GB drive. That's certainly normal. Well, you've got the typical disk drive manufacturer lie^H^H^Hmisinterpretation of `Gigabyte' here. Since the numbers look larger, disk manufacturers always use Giga = 10^9, while computer technicians always use Giga = 2^30. % bc bc 1.06 Copyright 1991-1994, 1997, 1998, 2000 Free Software Foundation, Inc. This is free software with ABSOLUTELY NO WARRANTY. For details type `warranty'. scale=3 9.1 * 10^9 / 2^30 8.475 ^D So there you are. Note that when not using `dangerously dedicated' mode you lose a few additional sectors since fdisk partitions are by definition constrained to cylinder boundaries (for what fdisk believe were a `cylinder'), but that's negligible. > On Monday 30 April 2001 04:12 pm, you wrote: >> "John R. Shannon" <john@johnrshannon.com> wrote: [Please, no full quotes.] -- cheers, J"org .-.-. --... ...-- -.. . DL8DTL http://www.sax.de/~joerg/ NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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