64GB MicroSD?

dmb6202

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Jun 8, 2014
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Sorry to bump an old thread, but this is additional info on the subject. While 64GB cards are supported, they need to be formatted correctly to be fully compatible with AOSP roms. If you format the sd card in a windows PC, it will default to using the extFAT file system. I believe a Sense rom will also format using extFAT, but I cannot confirm that.

The extFAT filesystem not supported by AOSP roms due to licensing issues. The card should be formatted using the FAT filesystem, but Windows will not allow formatting of a volume larger than 32GB using FAT. To get around the issue, I formatted my 64GB with the FAT filesystem using a Linux computer. You may also be able to format directly in an AOSP rom to get the correct filesystem.
 

Captain_Throwback

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Aug 22, 2008
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The Nothing
Sorry to bump an old thread, but this is additional info on the subject. While 64GB cards are supported, they need to be formatted correctly to be fully compatible with AOSP roms. If you format the sd card in a windows PC, it will default to using the extFAT file system. I believe a Sense rom will also format using extFAT, but I cannot confirm that.

The extFAT filesystem not supported by AOSP roms due to licensing issues. The card should be formatted using the FAT filesystem, but Windows will not allow formatting of a volume larger than 32GB using FAT. To get around the issue, I formatted my 64GB with the FAT filesystem using a Linux computer. You may also be able to format directly in an AOSP rom to get the correct filesystem.
AOSP supports exFAT just fine, using open-source exfat-fuse, the same way that Linux distros support it. You must be using an old ROM.
 
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dmb6202

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Jun 8, 2014
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AOSP supports exFAT just fine, using open-source exfat-fuse, the same way that Linux distros support it. You must be using an old ROM.
I wasn't able to able to write to a 64GB exFAT card in the first AOSP-based ROMS I installed. Of course, that was a while back, potentially before the FUSE module for exFAT was rolled in. If I remember correctly, the first versions of ntfs-3g (the FUSE module for NTFS on Linux) were read-only. I may have been similarly limited by an early implementation of exFAT. Good to know it's fully functional now!