The Xbox 360 harddisk with case, Downside
The HDD inside its case
The HDD outside of its metalcasing
- The drive is manufactured by Samsung (Seagate Drives have been used
in some systems. Unknown if contents are the same) and is required
to play backward compatible Xbox games.
Samsung details:
- Model: SAMSUNG HM020GI
- Revision: YU100-06
- Serial Number: S0A8J20YA44356 (of course this is different for every
HD)
- Capacity: 18.63 GB
Seagate details:
- Model: ST920217AS
- Revision: 3.01/LD25.1
- Capacity: 20 GB
Hitachi details:
- Model: HTS541020G9SA00 (Travelstar)
- Revision: C60D
- Capacity: 20 GB
- Vendor Support URL: [1]
Confirmed Facts
- The harddisk is not locked in any way. A completely zero drive will
only be read by the Xbox 360 if the relevent headers are in place on
the disk.
- A FATX partition exists on the drive
- For a drive to be considered valid it must have the ‘Plain text HDD
info’ and MS logo PNG. If these elements do not exist then no HDD is
detected. So there is no way for third parties to manufacture HDDs
without a license or without infringing Microsoft’s copyright. (The
Gameboy used the same idea for cartridges). US courts have held (in
at least four separate cases) that Copyright cannot be used to
prevent interoperation.
- The 360’s serial number is required when formatting a HDD.
- The drive’s capacity is reported as 13GB by the 360 immediately
after formatting (20Gb HDD only).
Speculation
- There is no information at this time that leads us to believe the
HDD is encrypted, there are plenty of clear text entries that can be
read.
- The FATX partitions on the drive seem to be a
Big Endian version of the
1st Generation Xbox’s FATX filesystem. Work is underway to modify
the Linux kernel driver to verify this. There is some initial
support for this file system in [CVS].
Drive contents
The Xbox uses the FATX format for its partitions. The
FATX page has more information about the partition
locations and the FATX format itself.
Power connector
Pin # Signal Name On XBOX 360 Signal Description
1 V33 Not connected 3.3V Power
2 V33 Not connected 3.3V Power
3 V33 Not connected 3.3V Power, Pre-charge, 2nd mate
4 Ground Connected 1st Mate, Pre-charge, 2nd mate
5 Ground Connected 2nd Mate
6 Ground Connected 3rd Mate
7 V5 Connected 5V Power
8 V5 Connected 5V Power
9 V5 Connected 5V Power
10 Ground Connected 2nd Mate
11 Reserved Not connected -
12 Ground Connected 1st Mate
13 12V Not connected 1st Mate, Pre-charge, 2nd mate
14 12V Not connected 2nd Mate
15 12V Not connected 3rd Mate
This (probably) explains why normal 3.5” sata drives won’t even spin up
(missing 12V). So if you want to use a 3.5” drive you need to connect
your own 12V.
This table plus more info can be found in the electrical specification
here.
(Table 17, Page 117)
External Links
Category:Xbox360_Hardware