SD Card Reader says no pictures

[Airwon]

Hi, I need help...my laptop is an HP G50-102NR and has the left side SD card reader. When I plug in my 8G memory card it works just fine, but when I plug in my 512MB one it says I have no pictures. When I look at the properties it shows there is space used. I tried sharing it, but nothing changed. Anyone have any idea what might be going on?

 

[aford10]

It's the difference in binary vs decimal storage descriptions.
http://www.pcguide.com/intro/fun/bindec.htm