SDrive problem: SD is read-only

[Mr.Amiga500]

Before you suspect that I might be a total moron... yes, the switch on the SDrive is on read-write and the tab on the SD card is not on "Lock".

 

This is a 512Mb SD card (not SDHC) and I am able to write to it using any other computer (including Amiga). I first noticed this problem when I typed a long document using "The Last Word" and "saved" it. Later, I went to open the document and noticed (with much disgust) that it wasn't there. I then tried copying a file (using The Last Word) and the copy was successful. When I refreshed the directory, it was gone. I then tried deleting a file. It shows successfully deleted, but when refreshed, the file is back. (...just like a zombie - kill it and it keeps coming back)

 

I didn't have problems with a 2Gb SD card I was using before. (but that card is now used for something else - 2Gb was overkill for Atari)

 

Anybody have any ideas why this card is read-only on the SDrive?

[Sub(Function(:))]

Was it at 2G cards, that you had to have different firmware on the card reader to access the card? Makes me wonder if in supporting 2G+ cards something might might have got broken in the smaller capacity cards.

 

I would try a 2G, or above, card again. it this works I would really start to suspect the firmware, in relation to smaller capacity cards.

 

BTW I understand 2G is overkill but they are so cheap now.