On Tue, Jun 12, 2012 at 02:47:31PM +0000, Arnd Bergmann wrote:
Ok, thank you very much!
This confirms that it is the same as my 8 GB essential card, and I would not recommend using this kind of card in production systems with an ext4 or similar file system.
From what I can tell, all the good Samsung cards are marked "Made in Korea" while all the bad ones are "Made in Taiwan". I would not treat this as 100% reliable information as those things tend to change over time, but it's certainly a good indication.
Unfortunately, I haven't figured out a way of telling this before buying them. Occasionally, a vendor will have photos detailed enough to show the back, but they don't always even deliver that particular card.
Thanks, David