Date: Sat, 16 Jun 2001 11:57:42 -0400 (EDT) From: "Ian P. Thomas" <ipthomas_77@yahoo.com> To: jmora@ahvm.hvm.sas.cica.es Cc: freebsd-questions@freebsd.org Subject: Re: Problems with my hard disk geometry? Message-ID: <200106161557.LAA00609@scraemondaemon.my.domain> In-Reply-To: <Pine.BSF.4.10.10106161031150.1347-100000@groucho.hvm.sas.cica.es> from "Jesus A. Mora" at Jun 16, 2001 10:44:19 AM
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FreeBSD doesn't use the BIOS for drive geometry, it gets it from the disk. Windows does use the BIOS. If you have the root partition of FreeBSD installed before the 1024 cylinder, or roughly 8 GB in your case, then it should work fine. You also need to make sure to install booteasy on the disk. It will allow you to choose from Windows or FreeBSD at startup. Ian In the last episode, Jesus A. Mora stated... > > > > On Fri, 15 Jun 2001, Bill Moran wrote: > > > What does your BIOS say the geometry is? > > Well, the BIOS gives you three options: > CHS : 38792 cyl / 16 heads / 63 sectors = 39,102,336 sectors > LBA : 2434 cyl / 255 heads / 63 sectors = 39,102,210 sectors > Large: 2586 cyl / 240 heads / 63 sectors = 39,100,320 sectors > Auto > > In fact, if configured as "Auto", it chooses to go "LBA", as stated during > the final boot process. > > I wonder if FreeBSD (or the boot0 loader) gets confused, since the number > of heads in LBA (255) is not in the form m * (2^n), so it cannot guess > the real geometry of the HD. > > Also, I wonder if setting the option "Large" mode could be of some help > (and if it will work with MS Win98). Of course, I guess I'll have to > repartition the disk and reinstall everything if going this way. > > By the way, a strange thing happened to me the first time I booted the > system and tried to set the Win98 partition with its FDISK tool: I forced > the LBA mode in the BIOS, and the FDISK stated that the HD was 8GB large. > So I set the "Auto" option, it booted LBA again, but this time the FDISK > saw the real size (about 20GB). > > Any hint, please? > > TIA. > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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