Testing SD Flash longevity: I found a couple old SD Cards from about 2012 that I hadn't touched, figuring this would at least tell me something about 'bit rot' potential. I don't know what type of cards these are MLC, TLC etc, they're just generic sandisk from 2012ish, used in a Nikon. I copied about 10gb of .jpegs (fat32) from 2 16gb cards onto a mac. And... it worked fine!? no file error messages at all... I opened all the images in 'preview', no CRC errors, no 'this jpg image is corrupt'... they all open and look perfectly fine as far as I can tell. And I think JPG standard has some sort of hash or crc or something to detect issues. So? wtf? I hear all about flash bitrot, but in my one, unscientific, test, I was unable to verify _any_ bitrot whatsoever in 12 years from sd cards stored in a drawer?
I was reading about supposed inevitable 'bit rot' of SSD and flash data, but I surprised I could find NO ACTUAL RECENT TESTs to back up any of the claims or hand wringing online, with, you know. data. none. nada. zilch. So here's a data point of 1, anyone else have an actual data point on this? anyone have any more actual test data?