Date: Fri, 7 Feb 1997 08:40:19 +1100 From: Bruce Evans <bde@zeta.org.au> To: bde@zeta.org.au, terry@lambert.org Cc: durham@w2xo.pgh.pa.us, hackers@FreeBSD.org Subject: Re: DOS partition trouble Message-ID: <199702062140.IAA05338@godzilla.zeta.org.au>
next in thread | raw e-mail | index | archive | help
>> For SCSI disks with at least ncr controllers, this could be caused >> a DOS partition that ends on a cylinder boundary and FreeBSD partition >> that doesn't. When you remove the DOS partition, the controller's BIOS >> will have problems determining the disk geometry. > >What? The BIOS examines the disk to get the geometry? > >How do you put something on the disk in the first place, then? For disks with a nonexistent or empty partition table, the BIOS chooses a default (one with <= 1024 cylinders if possible. This is always possible for disks with < 63*255*1024 sectors). >I was under the impression that fictitious geometry was *always* >an artifact of the BIOS's idea of geometry, not the oter way around. That would usually fail for disks partitioned under another BIOS, especially under an old BIOS with a limited number of defaults. Bruce
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199702062140.IAA05338>