short-changed on SD card?
William Bulley
web at umich.edu
Tue Feb 3 04:33:59 PST 2009
According to Warren Block <wblock at wonkity.com> on Mon, 02/02/09 at 15:29:
>
> newfs_msdos(8)
Learned something new there. Thanks!
> It's generally not useful to slice/partition a small SD card. Without a
> slice table, the whole device is just one slice.
Agreed. I just want a big chuck of storage (in this case the 2.0 GB that
I paid for, sigh...) and I don't care what format it is in. As I said, I
am happy with FAT16 as long as I can use all (approximately) 2.0 GB of it.
> Offhand I don't know if you can overwrite an existing slice table (boot
> block) with just a 'newfs_msdos /dev/da1'. Probably.
This is something I will try.
> If not, you can just 'dd if=/dev/zero of=/dev/da1 bs=512 cnt=1' and then
> do the newfs_msdos.
Okay. This is worth a try.
> If you plan to use that card in a camera, you are a little safer doing a
> "full" or "low-level" format with the card in the camera. Some cameras
> create and like not-quite-right filesystems. Older Canon cameras, for
> instance.
This is not for use in a camera. It is just a quick and dirty way for me
to grab (about) 2.0 GB from one FreeBSD system and plop it onto another.
> Finally, there are more than a few reports of SD cards with false
> capacities bought on ebay.
This SD card was purchased from a reputable firm in New York whose name
you would recognize were I to mention it. I have had nothing but good
experiences buying from them in the past (many years > four).
Regards,
web...
--
William Bulley Email: web at umich.edu
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