The DSTT (firmware OS or hardware) can not read fast with FAT32. HC FAT32(only) drives big enough to hold more games are currently much to slow. They are not comfortable to select; as with FAT (VFAT16) on 4GB or less cards. Plus, trying to sort them on a computer (in reader) can trash your drive! We need faster reading of the flash while inside the DSTT when high capacity (microSDHC) flash is used. My flash is an HC, Class 6 (SD 2.0 rating) and I've verified faster reading and writing but not when in the DSTT. The menu has terrible lag. With 60 files, it's a drag. Windows XP updated and with SDHC hotfixes still gives errors and bombs on SDHC flash transfers. Kubuntu works great but not with the DSTT included "HC" reader. Note: An SD only reader will not work at all with a SDHC card but the new (select) SDHC readers do all (just not on Windows).