I had this problem until I updated the firmware to the latest while using the sdcard in a pi 2, then it worked in the pi 3. Use rpi-update. https://linhost.info/2015/05/update-the-firmware-on-a-raspberry-pi/ Yes this worked for me - many thanks Bignumbas. (I was using a wheezy image which I'd downl...

Running Windows 7, using a Dell Inspiron 7520 with an internal SD card reader, and a Kingston 8Gb micro SDHC card with its own SD adapter, plugged into the Dell, repeatedly hung W32DI. The card appeared in the Windows Explorer with an SDHC icon. Thanks to the comments above I tried it with an old US...