Hello all, Got My a5c8 dualboot last week, put 128Gig Samsung class10 sd in it and let Android format the sd card. Then boot to Windows et voilà, works like a charme. On both OS full 128 Gig. I’m happy.
Hoped you were on to something with this information as far as getting the larger Micro Sd working in both OS so have been experimenting by trying to have Android format a 64GB card. I have deleted the partition and re-created with no format – Android dismounts card as soon as it is inserted. Tried format in Fat32 but with cluster size 32 – Android sees it and “checks for errors” for several hours but does not mount card. Tried with Fat32 and cluster size 64 – Android dismounts card as soon as inserted. So no luck here, either the Samsung is special or the bug was fixed on later builds of the A5C8. All my 64GB cards came factory formatted as exFat and, again when I put them in the tablet, Android ejected them immediately with no offer to format. I had to do that with my PC. (yes this should be in our other SD card forum)
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