Hi all,

I've been reading these two pdfs

www.cs.ucr.edu/~amitra/sdcard/ProdManualSDCardv1.9.pdf

www.mikrocontroller.net/attachment/.../SDHC_SDM04G7B7_08G7B7.pdf

The first, SanDisk, says (page 3-24) that there are 20480 sectors
of 512 bytes in the protected system area. The second, Toshiba,
says (page 34) that its cards have 65536 * 512 bytes in the protected
area

I read that the MBR doesn't always start at Sector/Block 0. I'm
not wanting to use FAT with a particular test card (made by Phison
AFAICT from the CID response), just straight data storage in an
embedded environment, so I'd like to know the writable sectors of
any card I end up using for this product

The card in a reader comes up as I: on my PC, and I tried a
couple of XP utilities to try and find out which sectors are in
use after formatting, but nothing was forthcoming

Is there a utility anyone could recommend for finding out what
sectors FAT is installed in ? I *could* read the whole card a
sector at a time and log which are not FF but .......

TIA

Joe
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