Hi, I was using a PNY 8 gb sdcard, on a HP netbook, (with built in slot for the card), Win7 starter was using this for Readyboost. Normally at computer I would see the drive listed as (D. Drive (D no longer appears when clicking manilla folder, or computer. At Computer mgt > disk mgt > I see " removable (D no media" Choosing "CMD" typing cd D:\ results in D: but cannot copy a file to the drive "drive not ready msg) Remove SD card > reboot > disk mgt > Drive (D no media still there. Nothing in the slot. Tried a different SD card same results Tried USB card reader with Sd card in it works FINE In disk mgt. the only place I see (D is where the large icons are, or not the list. Clicking the icon for (D nothing happens