Hi, hope someone can explain or help me. I purchase a 32gb microSD card from ebay. The seller live about 5hrs from me based on the address. I had try format using cmd, window format, and even HP USB Disk Storage Format Tool - v2.1.8. all success but sometime when i plug in the 32gb it kept ask me to reformat. that was one problem. 2nd problem was, if i copy/paste a 4gb mp3 to the 32gb microSD and everything was successfully copy. if unplug and replug, it delete all the mp3 and only leaving 1gb in it. If i check on Properties of the SD card, it said 4gb used. However, if i highlight all the folder inside sd card, Properties said 1gb usage. it seem like the card can only take 1gb or less. Is the card defective?
i use an adopter to connect to usb. I'm on window 7 x64. The mp3 is not corrected since i tested on my 8gb microSD. Yes i did do a "safety removal" and i did do chkdsk. no error found. i'm not sure what the brand name is since no brand name on the sd card bsides 32gb SDHC and bunch of number, made from Japan.