REPASSAC - 21 hours ago »
I always quick reformat to FAT32 - (I have had write errors after hard formats).
You shouldn't have any errors on a full format, that's the idea of it, to highlight errors if there are any.
There's a really really simple program that will write to any device and then verify what was written, it also gives an indication of speed.
It doesn't delete anything, including the generated test files so these need to be manually deleted afterwards as the device will be full.
If the device already has files/contents on it the program simply fills the rest and verifies that, meaning the section already containing files doesn't get checked.
Because it writes and reads to the whole device it can take a while, but well worth it, I bought an expensive branded sd card a few years ago, it was a couple of £'s cheaper on ebay 100% good seller, but the sd card was fake and faulty when tested, the packaging was perfect, the well known manufacturer confirmed the card as fake and I got my money back from the seller. Most people wouldn't have known and assumed the card had packed up a few months or years down the road.
I don't want to overload the OP with too much pfaffing around, but if I'd bought a new 1GB Transcend then I'd want to test it especially under the circumstances, similiarly if I had errors on a full format then I'd definitely want to test it.
ftp://ftp.heise.de/pub/ct/ctsi/h2testw_1.4.zip
unzip, read the readme, runs standalone, remember to delete the test files after.