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Forensic Focus - Android moving from YAFFS2 to ext4 - Digital Forensics Forums Mobile Phone Forensics - Android moving from YAFFS2 to ext4

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Mobile Phone Forensics

Android moving from YAFFS2 to ext4

Android moving from YAFFS2 to ext4

Posted: Thu Dec 16, 2010 4:05 am
Author: AlexC Location: UK
I'd posted this in rely to a thread on the general forum, but as it's a phone issue I thought it should be discussed in some detail here:
Interestingly, it seems that from Gingerbread Android is moving towards ext4:

"The reason this should be of concern to Android developers is that with 2.3, an increasing proportion of devices, notably including the Nexus S, are going to be moving from YAFFS to the ext4 filesystem..."


It will also change the way that the handset interacts with the flash chip. YAFFS2 does it's own wear leveling, presumably for ext4 it'll be dealt with at hardware level. Which for us (despite the difficulties that YAFFS posed) seems the tougher position if you're looking for previous blocks at the rawest level.

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