Main Site Documentation

Problems with microSD HC cards


#1

We have a problem with microSD HC cards.

All works fine with a 2GB microSD Card on the FEZmini with the microSD expansion card.

But not with a 4 GB Kingston Card

Exception System.Exception - 0xffffffff (1)

#### Message: 
#### GHIElectronics.NETMF.IO.PersistentStorage::.ctor [IP: 0000] ####
#### FEZ_Mini_Application_STOX.Program::Main [IP: 011c] ####

A first chance exception of type ‘System.Exception’ occurred in GHIElectronics.NETMF.IO.dll


#2

Kingston is the magic word (or the swear word, depending on your view :slight_smile: )

I think this is your error message:
http://www.tinyclr.com/forum/1/2799/ which I found from http://www.tinyclr.com/forum/2/2899/ and http://www.tinyclr.com/forum/18/1976/#/2/msg27434

Ultimately the Kingston seem power sensitive, it’s probably worth looking at the capacitor fix - there are a heap of other posts that talk about that.


#3

Format it as FAT, not FAT32 and it should work without the cap fix.