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 Post subject: Call for HELP - PUIS ROM & NVRAM testing !!!
PostPosted: May 16th, 2015, 20:25 
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Joined: December 19th, 2006, 8:49
Posts: 10828
Location: Portugal
Let's try to figure out where on ROM the PUIS flag is stored :)

This might be important for drives that doesn't spin at all.

Sometimes by looking to a ROM dump it's necessary to identify if the PUIS flag is set ON or not, this way we can solve some problems in particular with some versions of windows setting PUIS and with some drives firmware bugs not disabling PUIS as they should !!!

Let's contribute to this. The challenge is simple. Just use your favourite firmware tool to take an image from the ROM of your drive, then turn on PUIS and compare the ROM or NVRAM from your drive with PUIS on and PUIS off. That way we can determine where the flag is stored at PCB level !!!

Here is my findings so far (at the present time i've only tested with WD 2.5 drives but i will add to this on-going thread as i have time) !!!

Thanks and enjoy !!!!

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