Hi, maybe someone could help me disable PUIS on Samsung HDD? i have two of them now broken by win10
one is HD204UI, i have successfuly connected terminal to it, but it will not spin up, after i give spinupp comands. so thinking of disabling PUIS manualy via ROM.
other has same situation but is HD103SJ + in adition if i try to spin it up using terminal or anythign else MOSFET that controls -5V gets burtn, but i do not see any other damages to preamp or drivers, so am at a bit of lost. many thank for any thoughts

sorry solved

I've arrived at my own solution in the meantime. I cut the ROM out of the official F4EG update and discovered that it differs from yours in a few areas. Your ROM's checksum was also in error AFAICT.

How did you solve your problem?

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A backup a day keeps DR away.

Please tell me how you solved it. I've been dealing with this since last december when Windows 10 bricked my drive.

Please post your solution. Thank you.

I don't have the capability as a new user. Can someone please send a PM to andrius to ask if he can come back and explain his solution?

EDIT: Hm, nevermind, I guess this second post unlocked the ability to send PMs.

See http://www.hddoracle.com/viewtopic.php? ... 8192#p8192

The PUIS flag (0xAA) is stored in the FIPS section at offset 0x3021. The checksum word at 0x37FE is also adjusted.


I suspect that the actual problem may be this area:


The original ROM code looks like this:

_________________
A backup a day keeps DR away.

Hey fzabkar, thanks for sharing this.


I still have both drives stored away. But last I checked I even struggled to get anything from them with a TTL adapter. You suggested that I might have stressed the pins. If I got the drive to communicate via TTL, is this a fix I could do myself?