nanobsd disk info
Michael W. Lucas
mwlucas at blackhelicopters.org
Tue Mar 22 08:23:54 PST 2005
On Mon, Mar 21, 2005 at 09:24:53PM +0100, Paul Schenkeveld wrote:
> On Thu, Mar 17, 2005 at 11:51:07AM -0500, Michael W. Lucas wrote:
> > Hi,
> > I'm obviously missing something here.
> > I'm trying to get nanobsd on a 512Mb flash card. The only changes
> > I've made are to set kernconf = net4801 in make.conf and to set the
> > Makefile disk geometry variables. "make" chokes on the disk geometry,
> > so I'm assuming I've set it wrong.
> > My diskinfo shows as:
> > mwl-crash2~;sudo diskinfo -v da0
> > da0
> > 512 # sectorsize
> > 512483840 # mediasize in bytes (489M)
> > 1000945 # mediasize in sectors
> > 488 # Cylinders according to firmware.
> > 64 # Heads according to firmware.
> > 32 # Sectors according to firmware.
> Somehow these numbers are not consistent:
> 488 cyls * 64 heads * 32 secs = 999424 secs
Doh, of course. I've never seen a hard drive lie to me before, didn't
occur to me to check these numbers.
> What does dmesg show about da0?
da0 at umass-sim0 bus 0 target 0 lun 0
da0: <Generic STORAGE DEVICE 0.01> Removable Direct Access SCSI-0 device
da0: 1.000MB/s transfers
da0: 488MB (1000945 512 byte sectors: 64H 32S/T 488C)
I get the same results when I try on a separate machine. I also get
the same results when I use a second identical flash card.
Any suggestions or pointers? How can I deal with a flash card that's
obviously lying or brain-dead? I apparently don't know the right
Google keywords, because I can't find a solution there...
Michael W. Lucas mwlucas at FreeBSD.org, mwlucas at BlackHelicopters.org
Latest book: Cisco Routers for the Desperate
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