SanDisk Ultra microSDXC UHS-I Card, 64GB not compatible with Kasina

I bought this card SanDisk Ultra microSDXC UHS-I Card, 64GB, and after formatting it to FAT32 with 32KB clusters, the Kasina recognizes it the problem is when the files are reproduced: Unsupported file format and those it recognizes stop after a second producing an unbearable noise. Formatting the microsd to FAT32 with 64Kb clusters the files are recognized but they are played in jumps. What 64Gb cards have worked for you?

What firmware is your Kasina running? (Check under Settings/Service)

Are you copying the factory sessions to this card or some other sessions?

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Originally Posted by Andy

What firmware is your Kasina running? (Check under Settings/Service)

Are you copying the factory sessions to this card or some other sessions?

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KASINAFW2.03
Yes, the factory sessions and some more.
The same sessions on an 8gb card work perfectly.

Interesting! Have you tried an even smaller cluster size to see if that makes a difference?

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Originally Posted by Andy

Interesting! Have you tried an even smaller cluster size to see if that makes a difference?

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I just tried 16 KB, only the KBS work. Audiostrobe and spectrastrobe or Unsupported file format or if it plays it stays in 0 seconds and does not play anything.

Hm! Very strange indeed. It sounds like perhaps that card might have a hardware problem. Can you return it?

I'm not sure what the factory card cluster size is, but I'm not sure that it matters.

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Originally Posted by Andy

Hm! Very strange indeed. It sounds like perhaps that card might have a hardware problem. Can you return it?

I'm not sure what the factory card cluster size is, but I'm not sure that it matters.

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Yes, I could return it. But I do not think that is the problem since the laptop with windows 10 works perfectly. The files are reproduced without problems with the card formatted at 16,32 and 64Kb.

Stranger and stranger!

I can check some of my cards, but won't be able until May. I can't imagine what the issue is!

IF it helps, in this thread, this person said that the brand/model he used works.

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Originally Posted by Andy

IF it helps, in this thread, this person said that the brand/model he used works.

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My card is the same but a newer version. The difference I see is that mine indicates A1. Searching on the internet I found this:

Application Performance Class. Already in specification 5.1, microSD cards released the so-called APC, a new class designed to indicate the appropriateness of a card to store data from applications or the applications themselves on compatible Android smartphones. Currently we are already on the APC 2, indicated on the cards as A2, which guarantees a few read and write speeds in random and sequential mode suitable for executing applications.

I'm afraid I don't know the answer as to why your card is not working in the Kasina at this point. I will do some research and try to get back to you. Thank you for bringing this to our attention.

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Originally Posted by Andy

I'm afraid I don't know the answer as to why your card is not working in the Kasina at this point. I will do some research and try to get back to you. Thank you for bringing this to our attention.

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Do not worry Andy, I'll leave this card for another use and I'll buy a 32Gb card that will not give me any problems. Thanks for your attention.

Ok.

We just verified today that formatting a "64 GB SanDisk micro-SDXC card (Ultra 64GB 80MB/s UHS-I)" to FAT32/32k clusters and loading it with sessions will work fine. Our testing shows no issues with the Kasina seeing the sessions or playing them properly.

Again, no idea why you were having so much trouble!