[Request] HP DV2500 SATA 2 and unlock everything like IDA

[gabiz_ro]

I'm talking from what I remember so some info may not be 100% right.
Don't remember what sata are default values for ICH8,you need to consult datasheet.
Look for sata capabilities register in AHCI memory space.
If default is sata 2 but BIOS set it to sata 1 speed you need to find who set that in BIOS code.
Or you may rewrite this but after BIOS set it to sata 1 otherwise if you do this earlier your rewrite is overwrite by BIOS
Read sata chipset registers it may be device d31:f2 ,find this info from datasheet. Offset 20h-24h are memory mapped AHCI registers.From that offset calculate where is bit that set sata speed.
Find a way to read and write byte or word from that address,modify value to reflect changes to sata 2 and write.
Test if really works at sata 2 speed.
If yes then find a way to do this during BIOS,insert some code in one module to do this,use a dummy option rom to replace PXE rom,set boot to network first so that rewrite is done before booting from hdd.