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16  Forum 2005-2010 (read only) / Troubleshooting / Re: Cant get SD card working on: January 21, 2011, 09:12:06 am
I'll try another, but the card I was using was a 4GB  Transcend brand
17  Forum 2005-2010 (read only) / Troubleshooting / Cant get SD card working on: January 21, 2011, 12:47:51 am
I have a Mega 2560 and an Ethernet shield.  The Ethernet part works. I put in a Micro SD card in the socket and I tried both the datalogging and the ReadWrite example. I always get the message -

Initializing SD card...initialization failed!
 
I had the card formatted FAT32 previously, so I reformatted it FAT16 and used the "default" allocation size (64K).
The card works perfectly in every computer I put it in.

So my questions are:
Do I have to format the card first in a PC?
If so, what is the correct format?
What else am I doing wrong?
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