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→Quota File
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+
== Quota File ==
== Quota File ==
−The inner data of <code>Quota.dat</code> is 0x48 bytes with the following format. The exact function of this file is unclear.
+The inner data of <code>Quota.dat</code> is 0x48 bytes with the following format. The file seems to limit the extdata total size.
{| class="wikitable" border="1"
{| class="wikitable" border="1"
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| 0x08
| 0x08
| 4
| 4
−| 0x1000, block size?
+| 0x1000, block size
|-
|-
| 0x0C
| 0x0C
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| Always 126. Probably device directory capacity. See the [[#Device Directory Capacity]] more information.
| Always 126. Probably device directory capacity. See the [[#Device Directory Capacity]] more information.
|-
|-
−| ...
+| 0x10
−|
+| 4
−| Always 0?
−| The meaning of other fields is unknown
+|-
+| 0x14
+| 4
+| Max number of blocks
+|-
+| 0x18
+| 4
+| Always 0?
+|-
+| 0x1C
+| 4
+| Free blocks remained
+|-
+| 0x20
+| 4
+| Always 0?
+|-
+| 0x24
+| 4
+| Always 0?
+|-
+| 0x28
+| 4
+| Equal or greater than the free blocks number?
+|-
+| 0x2C
+| 4
+| Always 0?
+|-
+| 0x30
+| 4
+| ID of most recently mounted Extdata image. Same as the one in [[Inner_FAT#Filesystem Header]]
+|-
+| 0x34
+| 4
+| Always 0?
+|-
+| 0x38
+| 4
+| Always 0?
+|-
+| 0x3C
+| 4
+| Always 0?
+|-
+| 0x40
+| 4
+| ?
+|-
+| 0x44
+| 4
+| Always 0?
|}
|}