The old ones would just wrap around and the filesystem would get corrupted quick.
New ones have controllers that know FAT and NTFS and save the filesystem so just the data gets corrupt.
When you buy one fill it up to at least half capacity and do a checksum on files to make sure it actually has the data. Then you can return it right away and they won't get your money.
Are you buying from reputable retailer? A lot of the memory cards are relabled low capacity cards from China and sold by boomer dropshippers
The old ones would just wrap around and the filesystem would get corrupted quick.
New ones have controllers that know FAT and NTFS and save the filesystem so just the data gets corrupt.
When you buy one fill it up to at least half capacity and do a checksum on files to make sure it actually has the data. Then you can return it right away and they won't get your money.