Difference between revisions of "/tmp/nandTest.dat"
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Revision as of 03:57, 2 August 2021
/tmp/nandTest.dat is a 25.6MB file created during the factory process to test reading and writing the NAND. It contains a specific pseudorandom pattern. The contents can be downloaded here.
Like other contents of /tmp, it is erased on every boot and IOS reload.
Algorithm
The following code is used to generate this file:
s32 seed = 1;
s16 rand(void) {
seed *= 0x41C64E6D;
seed += 12345;
return (s16) seed >> 16;
}
u8 getRandomChar(void) {
return rand() >> 8;
}
