Date: Tue, 1 May 2001 08:59:51 -0600 From: "John R. Shannon" <john@johnrshannon.com> To: freebsd-scsi@freebsd.org Subject: Re: Disk geomerty Message-ID: <01050108595100.00646@pablo.johnrshannon.com> In-Reply-To: <200104302212.f3UMCYU67449@uriah.heep.sax.de> References: <01043013530600.00636@pablo.johnrshannon.com> <200104302212.f3UMCYU67449@uriah.heep.sax.de>
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I'm still having problems. 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. 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. On Monday 30 April 2001 04:12 pm, you wrote: > "John R. Shannon" <john@johnrshannon.com> wrote: > > The diskcontroller offers options for CHS mapping of "Plug and Play > > Mapping" or "Alternate CHS Mapping" without explanation. The FAQ > > refers to "extended translation support". Does this correspond to > > one of these modes? > > No idea what they really mean. Anyway, based on my own experience the > Tekrams are rather forgiving and don't stupidly insist on a particular > mapping. The worst that happens (like it could be for `dangerously > dedicated' mode) is that they warn you about a supposedly bad fdisk > table, and pause for 10 seconds at boot time. While the message then > says `Hit any key to continue', they actually even continue > automatically after 10 seconds. > > If you are cautious, just give one of those modes a try with a minimal > installation. If it's not what you like, after installation blank out > the first sectors of your disk with > > dd if=/dev/zero of=/dev/da0 count=100 > > and then immediately reboot and reinstall using the alternative > option. The above command will fake a `virgin' disk to the controller > BIOS, so they can't try to adapt to a previously installed fdisk > table, and have to restart from scratch. -- John R. Shannon john@johnrshannon.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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