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I'd like to organize my many micro SD cards in a Excel table, to know what is on which micro SD card.

It's very difficult to stick a physical label on it (too small, and they always go away after a few months of handling it), so I'm looking for a software solution:

Is there a unique identifier (UUID) that stays on a given micro SD card, forever, and doesn't change even if we flash a new ISO Linux image on it? (for example Raspberry, but this is just one example)

If so, how to easily read this UUID from Windows and Linux?

Basj
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1 Answers1

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The high-tech solution is to read the Card Identification (CID) Register, which is a 16-byte code that contains information that uniquely identifies the SD card, including the card serial number (PSN), manufacturer ID number (MID) and manufacture date (MDT). The CID register is set when the card is manufactured and cannot be changed after it is set.

Unfortunately, not all manufacturers can be depended upon to burn a unique CID into each and every SD card that they fabricate.

If interested, see these sources :

The low-tech solution would be to write a unique number on the card with indelible ink, and keep a list of the cards and their contents using utilities such as Excel or even Notepad.

harrymc
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