Date: Sun, 30 Mar 2003 12:05:05 -0800 (PST) From: Nate Lawson <nate@root.org> To: Poul-Henning Kamp <phk@phk.freebsd.dk> Cc: cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sbin/fdisk fdisk.c Message-ID: <Pine.BSF.4.21.0303301153000.5939-100000@root.org> In-Reply-To: <10581.1048976788@critter.freebsd.dk>
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On Sat, 29 Mar 2003, Poul-Henning Kamp wrote: > In message <Pine.BSF.4.21.0303291408451.4536-100000@root.org>, Nate Lawson writ > es: > >On Sat, 29 Mar 2003, Poul-Henning Kamp wrote: > >> Modified files: > >> sbin/fdisk fdisk.c > >> Log: > >> Use default geometry in case the device doesn't provide one: > >> 512 for sectorsize. > >> 63 for sectors. > >> 255 for heads. > >> This will mostly show up on MD(4) devices. > > > >Won't this be a problem for small devices or for int 13 booting? That's > >why we use 64 heads, 32 sectors for scsi devices < 1 GB. > > You can specify any number you like to fdisk using all the usual > ways of doing so, and you should if you want to copy the image to > some other media afterwards. Sure. My concern was for devices like USB flash disks where your defaults may not be appropriate and the info IS being written to media. Would you be willing to put in a < 1GB size check on the media to use more appropriate heads/sector values? -Nate
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