This question already has an answer here:
- What filesystems does iOS use? 4 answers
WWDC 2012 Session 709, ￼What’s New in the File System, presented by Deric Horn included the following observation: Journaled HFS+ everywhere.
In the iOS Developer Library, NSDictionary Class Reference contains references to HFS.
Do iPhones use HFS Plus?
Journaled or not journaled?
I'd like an authoritative reference. Thanks.
Types of HFS Plus
iOS and iPhone aside for a moment … Apple's hdiutil(1) Mac OS X Manual Page lists four HFS filesystem types for creation purposes:
- HFS+J (JHFS+)
Beyond the accepted answer … as Apple sometimes distinguishes between JHFS+X (journaled, case sensitive) and HFSX, so:
- extra kudos to anyone who can verify whether, in an iPhone, both HFSX slices are journaled
… I do have fileXray, but I don't foresee myself making an ssh connection to my first generation iPhone ;-)