The HDD is Question is This
- CDRLabs - Ravi Kaushal HDD Photo.jpg (1.81 MiB) Viewed 1123 times
The customer says his kid dropped the hdd ,I do not remember if this HDD would click or the PCB would just not spin the HDD and get into ready state .Anyways yesterday i took another HDD of the same family and swapped heads .I would like to inform all of you that beware of these HDD's ,I have seen these in the following combinations
1 : 2 platter 4 heads bottom platter and heads missing
2 : 3 platters and 6 heads
3 : 3 platters and 5 heads with lower platter lower surface head missing
So the utilities from which we get head info are all misleading example it says heads installed 4 used 4 ,We assume lowest platter to have 2 and one up to have another set of heads making it 4 ,But it could be lowest platter is missing and we have middle and top platter used .I took the ROM Code out from the patient SED locked board using a programmer and programmed it on unlocked board using PC3K ,Board No is 8.....11 .Once powered on the Status registers in PC3k would go busy and immediately get ready state ,The HDD would not spinup .I have seen this happen in some other case also which i had done .The ROM is Attached To the post for anyone of you to analyze and help me .The file is renamed as a .zip though its .bin . Anyways i just though why not try ROM of the HSA donor HDD ,I programmed it into the ROM of the unlocked board and the HDD spinned and i was able to access all modules and even data .The data looks encrypted .I then programmed the DONOR HSA HDD Rom Code into patient ROM and resoldered it into the patient SED locked HDD PCB .The result was same Data is encrypted .Does a ROM make a difference to data encryption ,I do not have doors to work on these drives but i was having a though might be decryption keys are in MCU " Not Sure Though " thats why i tried Patient PCB . This is a External Casing HDD so i though might be the USB board has encryption ,I then used DONOR HSA HDD ROM programmed into Patient ROM and This ROM installed on patient Board with The WDC 3.5" USB To SATA Board on Deepspar Imager ,Result DATA is encrypted . I tried several other things which i will post in the evening possibly to this thread , Donor ROM is also attached to thread as .zip File .BTW both ROMS are different Versions
Some Stuff To Try
1 : Using DONOR ROM and Shifting All Modules of patient ROM to it and See if this works
2 : Trying to Retain the Modules of the ROM and Changing Code Segments
3 : Checking SA to See if ROM can be regenerated
4 : Working on Module 0x129 thats hidden In DIR module and has ROM Modules in Venice R - > https://www.youtube.com/watch?v=WK2P9p6Mf7s&t=2806s ,My Idea was not to unlock but extract ROM modules from 0x129 .
Am i on the wrong track ,Can you folks help me in this case please .How to defeat this encryption .
