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I saw that my SD card is FAT16 formatted. In order to improve performance, can I reformat it as FAT32? What filesystems does Android support for external storage?

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Yes, you should be able to use FAT32 with no problems. Android supports FAT/FAT16 and FAT32, and I believe raw / unformatted cards may work with some phones. You can also use EXT partitions but this requires some extra work, see for example how to use ext partition in my android?

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  • Nice, it will really improve my Android performance??? Will I see visible improvements this way?
    – Diogo
    Jun 7, 2011 at 19:46
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    @StickBumps Generally speaking, the advantages of FAT32 are that it allows you to have more files with longer filenames, and waste less space due to better cluster sizing. (See this for more info.) It shouldn't affect speed very much. Jun 7, 2011 at 20:04
  • in order to get speed improvements, spend the extra money and buy the highest class rating card you can find. at least a class 6, or a class 10. Jun 8, 2011 at 1:58
  • @Diogo There's an extreme class from SanDisk too. It's far more faster than class 10, but its slightly expensive.
    – iOS
    May 21, 2012 at 8:03

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