Unfortunately, there is no good way to programmatically detect this
failure condition. It's only obvious when you know that it's SD-like
media (no way to detect that), that the media is large (no way to
detect that), and you see one of several unusual behaviors (not all of
which are detectable).
If I had to guess, it looks like you have an SDHC card in an older
SDSC reader. The older readers can't read the higher-capacity SDHC
cards.
Try the reader/card combo on a recent windows system to see if they
are compatible. Or, look for a specific SDHC or SDXC compatibility
marking on the
The breakpoint between SDSC and SDHC is, in fact, 4GB for 512-byte
sectors. So, your data supports my theory that your cardreader is
non-SDHC compatible.
Matt
On Sun, Dec 23, 2012 at 11:19 AM, rh richard_hubb...@lavabit.com wrote:
On Sun, 23 Dec 2012 11:01:28 -0800
Matthew Dharm
