Troubleshooting: Mylio Utilizes More Storage Than Expected on Android SD Card

If you are utilizing an Android SD card to store your Mylio Library, you may see unexpected storage use of the SD card when syncing Thumbnails. This is due to SD Cards being formatted by the factory in a way that makes them inefficient in storing small files.

If you are syncing Thumbnails to your SD card, the below chart will show you the usable media count for a specific card size.

Card SizeMedia Count
16 GB115,000
32 GB75,000
64 GB150,000
128 GB310,000
200 GB485,000
256 GB*325,000*
400 GB515,000

*256 GB cards are formatted by the factory in a way that makes them very inefficient to use with smaller files like Thumbnails. If you would like, you can reformat the SD card to get more usable storage space. Here is how…

  Warning:   reformatting your card will erase all of its contents.

Format SD Card on Mac

  1. Plug SD card into a computer.
  2. Open Spotlight and type in “Terminal”, then open the Terminal application.
  3. Type diskutil list and press enter.
  4. Note the “/dev/disk#” number for your SD Card.
  5. Leave Terminal open, but open Spotlight and type in “Disk Utility”, then open the Disk Utility Application.
  6. Select the SD Card volume (not the disk).
  7. Eject the SD Card.
  8. Navigate back to Terminal.
  9. Within Terminal, run the following command, replacing /dev/disk# with your disk number to format your SD card.newfs_exfat -b 32768 -v SDCard /dev/disk#

Format SD Card on Windows

  1. Plug SD Card into a computer.
  2. Open File Explorer.
  3. Navigate to This PC.
  4. Right-click the SD Card in “Devices and Drivers”.
  5. Choose “Format”.
  6. Select exFAT option and set Allocation Unit Size to 32kb.
  7. Select the Start button to format your SD card.

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