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When you have OtherOS.. you also have a standard EXT partition which can be read/mounted in your PC copy of Linux. Part of the check I think for OtherOS is that XMB has correctly created an OtherOS partition before allowing it to proceed. This why it may be difficult to get the original implementation running without re-creating this blank partition. Somebody with a pre-3.21 should see what a blank OtherOS partition looks like (formatted thru the old OtherOS menu options), just before Linux is actually copied across to it. This could help in replicating this on newer drives.
On non-OtherOS enabled machines, you just have your main/encrypted Sony-specific partition. This still can be dumped with Linux on your PC as a raw file with DD when you plug it into a sata port.
Hmmm okay. So until we work out how to read it, it's unreadable in a PC?
No, it's not FAT32, it's a proprietary Sony file system, probably evolved from EXT2/EXT3 file system. It certainly wouldn't be anything like FAT32 or NTFS, as the PS3 is a Linux/Unix based system.
If we do though, an unmodified drive may help with analysis.
I suck at names. Help me name a usb-exploit PS3 Linux bootloader? All i came up with so far is lv2ate ("levitate") and AnotherOS.
those names are way better than anything i could think up.
another OS i think is best, it reminds of all the "yet another .... psp tool"
PS3 FTP Server allows you to read/write to the internal drive via FTP client.
Originally Posted by unidentified
The filesystem could probably be investigated with some file carving but it's quite likely that it's encrypted due to the fact that a hard drive from one console will require formatting before it can be used in another. As long as we have FTP access this should suffice for everything but making changes to the physical volume (partitioning etc.)
You could possibly do better than carving by writing a known byte-pattern (probably with repeating segments and some sort of counter... hmm.) to a file and dumping it on the machine via the ftp server.
Then look for fragments of that pattern on the raw disk image and see if you can piece together the inode structure/linking mechanism from that.... assuming the rumours of ext2/3 basis are in any way correct of course.
But then I'm no FS expert so I could be totally wrong about all of this.
As far as I am aware the ext2/3 basis only applies to the optional OtherOS partition. It's likely that the GameOS partition uses an in-house developed "simple" (i.e. non-journaling) filesystem like FATX on the XBox (not to be confused with exFAT).
Originally Posted by RatAndDragon
i think it might be using ext3 or reiserfs (v3). it was already used on ps2 in few games and BBN, so might be natural for sony to go with proven solution.
or they might have further developed their pfs filesystem from ps2.
I assume people have tried just sticking the drive into a caddy and looking at it with something like gparted?
Originally Posted by yoshi314