Getting an error trying to read a memory card on a PC with a card reader? Zero Assumption Digital Image Recovery, “is a freeware data recovery tool, specifically designed to work with digital images. It allows you to recover digital photos accidentally deleted from digital camera memory.” It recovers these formats: GIF, JPEG, TIFF, CRW – Canon RAW data, MOV – QuickTime movie, WAV – Waveform audio.
PC Inspector suite of free utilities from Convar. Smart Recovery is designed for removable media like flash cards, but there is a file recovery version there as well for physical drives.