Partitions: Difference between revisions
Jump to navigation
Jump to search
CelesteBlue (talk | contribs) |
No edit summary Tags: mobile edit mobile web edit |
||
| Line 20: | Line 20: | ||
| 0x24 | | 0x24 | ||
| 0x4 | | 0x4 | ||
| Size of device in blocks | | Size of device in blocks | ||
|- | |- | ||
| 0x28 | | 0x28 | ||
| Line 28: | Line 28: | ||
| 0x30 | | 0x30 | ||
| 0x4 | | 0x4 | ||
| Second Loader offset in blocks | | Second Loader offset in blocks | ||
|- | |- | ||
| 0x34 | | 0x34 | ||
| 0x4 | | 0x4 | ||
| Second Loader size in blocks | | Second Loader size in blocks | ||
|- | |- | ||
| 0x38 | | 0x38 | ||
| Line 127: | Line 127: | ||
{| class="wikitable" | {| class="wikitable" | ||
! Code | ! Code | ||
! Block Device | |||
! Name | ! Name | ||
! Location Seen | ! Location Seen | ||
| Line 132: | Line 133: | ||
|- | |- | ||
| 0x0 | | 0x0 | ||
| | |||
| | | | ||
| | | | ||
| Line 137: | Line 139: | ||
|- | |- | ||
| 0x1 | | 0x1 | ||
| "idstor" | |||
| | | | ||
| Internal | | Internal | ||
| Line 142: | Line 145: | ||
|- | |- | ||
| 0x2 | | 0x2 | ||
| "sloader" | |||
| | | | ||
| Internal | | Internal | ||
| Line 147: | Line 151: | ||
|- | |- | ||
| 0x3 | | 0x3 | ||
| "os" | |||
| os0 | | os0 | ||
| Internal | | Internal | ||
| Line 152: | Line 157: | ||
|- | |- | ||
| 0x4 | | 0x4 | ||
| "vsh" | |||
| vs0 | | vs0 | ||
| Internal | | Internal | ||
| Line 157: | Line 163: | ||
|- | |- | ||
| 0x5 | | 0x5 | ||
| "vshdata" | |||
| vd0 | | vd0 | ||
| Internal | | Internal | ||
| Line 162: | Line 169: | ||
|- | |- | ||
| 0x6 | | 0x6 | ||
| "vtrm" | |||
| tm0 | | tm0 | ||
| Internal | | Internal | ||
| Line 167: | Line 175: | ||
|- | |- | ||
| 0x7 | | 0x7 | ||
| "user" | |||
| ur0 | | ur0 | ||
| Internal | | Internal | ||
| Line 172: | Line 181: | ||
|- | |- | ||
| 0x8 | | 0x8 | ||
| "userext" | |||
| ux0 | | ux0 | ||
| Memory Card | | Internal / Memory Card | ||
| [[Memory Card]] | | [[Memory Card]] | ||
|- | |- | ||
| 0x9 | | 0x9 | ||
| "gamero" | |||
| gro0 | | gro0 | ||
| Game Card | | Game Card | ||
| Line 182: | Line 193: | ||
|- | |- | ||
| 0xA | | 0xA | ||
| "gamerw" | |||
| grw0 | | grw0 | ||
| Game Card | | Game Card | ||
| Line 187: | Line 199: | ||
|- | |- | ||
| 0xB | | 0xB | ||
| "updater" | |||
| ud0 | | ud0 | ||
| Internal | | Internal | ||
| Line 192: | Line 205: | ||
|- | |- | ||
| 0xC | | 0xC | ||
| "sysdata" | |||
| sa0 | | sa0 | ||
| Internal | | Internal | ||
| Line 197: | Line 211: | ||
|- | |- | ||
| 0xD | | 0xD | ||
| "mediaid" | |||
| | | | ||
| External | | External | ||
| Line 202: | Line 217: | ||
|- | |- | ||
| 0xE | | 0xE | ||
| "pidata" | |||
| pd0 | | pd0 | ||
| Internal | | Internal | ||
| [[Welcome Park]] and welcome video | | [[Welcome Park]] and welcome video | ||
|- | |||
| 0xF | |||
| "unused" | |||
| | |||
| External | |||
| Unknown | |||
|} | |} | ||
Revision as of 22:09, 31 August 2018
All devices on the Vita are partitioned the same way. Logical block size is 512 bytes and the first logical block is the master block which defines the partition table along with other information. Because of block level encryption, the master block is also encrypted along with everything else and cannot be seen if the device is dumped from an external dumper.
Master Block
The first block (512 bytes) provides a partition table as well as auxiliary information to the block management drivers.
| Offset | Size | Information |
|---|---|---|
| 0x0 | 0x20 | Magic string "Sony Computer Entertainment Inc."
|
| 0x20 | 0x4 | Version ? (0x3) |
| 0x24 | 0x4 | Size of device in blocks |
| 0x28 | 0x8 | full of zeroes - maybe padding |
| 0x30 | 0x4 | Second Loader offset in blocks |
| 0x34 | 0x4 | Second Loader size in blocks |
| 0x38 | 0x4 | ? (ex: 0x600) |
| 0x3C | 0x4 | ? (ex: 0x400) |
| 0x40 | 0x4 | ? (ex: 0x600) |
| 0x40 | 0x4 | ? (ex: 0x10000) |
| 0x48 | 0x8 | full of zeroes - maybe padding |
| 0x50 | 0x110 (0x11 per partition * 10 partitions) | Partition entries (there are 0x10 partitions at most (derived from code and data structure of SdStor driver)) |
| 0x160 | 0x5E | unknown (zeros) |
| 0x1BE | 0x10 | unknown (may contain some data) (In standard MBR this area corresponds to Partition Entry) |
| 0x1CE | 0x10 | unknown (must contain zeros) (In standard MBR this area corresponds to Partition Entry) |
| 0x1DE | 0x10 | unknown (must contain zeros) (In standard MBR this area corresponds to Partition Entry) |
| 0x1EE | 0x10 | unknown (must contain zeros) (In standard MBR this area corresponds to Partition Entry) |
| 0x1FE | 0x2 | 0xAA55 signature |
Partition Entries
Each partition entry is 17 bytes long. Offset 0x0 means end of table.
| Offset | Size | Information |
|---|---|---|
| 0x0 | 0x4 | Partition offset (blocks) |
| 0x4 | 0x4 | Partition size (blocks) |
| 0x8 | 0x1 | Partition code |
| 0x9 | 0x1 | Partition type |
| 0xA | 0x1 | Partition active |
| 0xB | 0x4 | Flags ? seen: 0x00000555, 0x00000F0F, 0x00000F1F, 0x00000F4F, 0x00000FFF
|
| 0xF | 0x2 | ? |
Partition Code
The partition code uniquely identifies the partition to its function. It is related to SceKernelModulemgr#Partition Code.
| Code | Block Device | Name | Location Seen | Description |
|---|---|---|---|---|
| 0x0 | empty partition | |||
| 0x1 | "idstor" | Internal | first eMMC partition, some data, IdStorage | |
| 0x2 | "sloader" | Internal | SLB2 Boot loaders | |
| 0x3 | "os" | os0 | Internal | Main OS partition, contains kernel modules |
| 0x4 | "vsh" | vs0 | Internal | system applications & libraries |
| 0x5 | "vshdata" | vd0 | Internal | Registry and error history |
| 0x6 | "vtrm" | tm0 | Internal | NpDrm, Marlin and DevKit/TestKit activations files |
| 0x7 | "user" | ur0 | Internal | User resources, LiveArea cache, database, & other stuff |
| 0x8 | "userext" | ux0 | Internal / Memory Card | Memory Card |
| 0x9 | "gamero" | gro0 | Game Card | Game Card read-only area |
| 0xA | "gamerw" | grw0 | Game Card | Game Card writable area |
| 0xB | "updater" | ud0 | Internal | Updater application and PUP copied here before reboot |
| 0xC | "sysdata" | sa0 | Internal | Dictionary and font data |
| 0xD | "mediaid" | External | Some data on Memory Card & Game Card | |
| 0xE | "pidata" | pd0 | Internal | Welcome Park and welcome video |
| 0xF | "unused" | External | Unknown |
Partition Type
The partition type code indicates the file system used or if there is no file system (for example, in the case of a SLB2 archive).
| Code | Description |
|---|---|
| 0x6 | FAT16 |
| 0x7 | exFAT |
| 0xDA | Raw data |
Partition Active
Some partitions (specifically os0 and the boot loaders) have a shadow redundant copy. On update, only the inactive partition is written to and finally the active partition is swapped. For partitions that do not use this feature, this value is ignored.