duplicate hdd serial number "152D20337A0C"

4

What is this "152D20337A0C" "serial number" about? I keep finding disks with this "special" serial number. I have 4 of them at home alone. Serial numbers should be unique.

mighq

Posted 2014-10-05T10:00:52.440

Reputation: 171

Where the 4 drives you tried connected external? (either external drives or internal drives with a external adapter) – Scott Chamberlain – 2014-10-05T15:04:55.223

Where are you getting the serial number (printed on the drive or identified by the OS)? How are they connected (interchangeable through a docking station)? Do all drives connected in this way show the same serial number? – fixer1234 – 2014-10-05T15:33:54.150

Answers

2

From the research I have done every instance of that serial number I found of people asking about their problems on the internet appears to be using some kind of external drive (be it a enclosed external drive or a converter device) or did not specify in their post.

It appears that a common SATA to USB controller chip in external drives or adapters overwrites the real serial number of the drive and replaces it with the value 152D20337A0C. If you looked on the physical drive itself it likely has a different serial number printed on it and if you took the internal drive and connected to it directly with a SATA connection it would also report differently.

(If you are using a internal drive then my theory is totally wrong and I will gladly delete this answer.)

Scott Chamberlain

Posted 2014-10-05T10:00:52.440

Reputation: 28 923

I found the real serial number of disk drive (the one printed on the drive) when going through SMART attributes. – mighq – 2014-10-06T20:44:45.697

@mighq makes sense, a controller chip is unlikely to modify SMART data as it passes through, but a simple query of "What is your serial" (I don't know the exact ATA command for it) could easily be spoofed. – Scott Chamberlain – 2014-10-06T20:46:06.407