Thread: T68/M96: MicroSD Card Format: FAT32, exFAT or ext4?
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Old 07-11-2014, 12:26 PM   #3
joblack
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Posts: 1,752
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Join Date: Jul 2006
Location: Somewhere on earth
Device: Onyx Boox Tab X C
Quote:
Originally Posted by Irratzo View Post
Hi there,

I have a M96 and a 64 GB MicroSD Card. I wasn't sure how to format the card for best use, so I'm curious what you've found out.

Google search for Android and MicroSD formats yields some opposing views.

My impression is that ext4 seems the fastest and most reliable format especially for Linux guys, and according to this post is or will be the future internal storage format for Android devices. But I don't understand if it will work with my M96 without tweaking, and at that, if some apps will but others will have problems.

Other sources recommend FAT formats. I read somewhere that you should use exFAT from 64 GB external storage upwards.


For now, I will play safe and format with FAT32. But I wonder if that might still be a bad choice considering speed and reliability.
The Onyx M96 will support SDXC card > 32 GByte if you format them with FAT32. Under Windows 3rd party tools are required. IMHO the T68 will accept SDXC cards > 32 GByte if it has the right format.

To my knowledge extFAT doesn't work and ext4 wasn't tested by me so I can't say anything about it.

FAT32 has some problems (big blocks, ...) but most of them shouldn't concern if you don't use a huge amount of very small (only a few kbytes) files.
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