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Q 2nd-hand blade won't read my 4GB and 16GB micro sd cards!

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#21
Stuart_f

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Could it be that some cards are using SLC flash and the others are using MLC?

Either that or some of your cards are actually SDHC rather than SD.

There's no telling if different batches of phones actually use different memory controller which might account for the larger variety of cards working in phone B when phone A (presumably an earlier example) is much more picky.

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#22
nir_mk

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> Either that or some of your cards are actually SDHC rather than SD.

confused - thought that ALL cards >2GB are SDHC

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#23
mikeb90

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hi mates, i got a problem similar to yoursone: i bought a SanDisk class 10 MicroSD_HC , if it's totally formatted in FAT32, it can be read, but when i try to make partitions (1024 Mb in EXT3, 64 Mb of linuxSwap, and the rest in FAT32), it becomes unreadeble. I can manage it only by ubuntu... why the hell!? D:

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#24
Stuart_f

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confused - thought that ALL cards >2GB are SDHC


Yes, you are perfectly correct - this should be true - but it's not :(

You can get SD (non-SDHC) cards in sizes above 2Gb. They don't strictly comply with the SD spec (because the spec only defines sizes up to 2Gb) nor do they strictly comply with the SDHC spec (because they aren't SDHC) but they do exist.
http://forums.dprevi...s/post/30952360

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#25
nir_mk

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My update:
Got a refund for the Class 10 generic 16GB.
Instead I bought Class 4 Kingston cards - both 8GB and 16GB. They both work. Result.

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