How to remove write protection from a micro SD card?

The problem, if not the switch then is a "notch" you can cover on the other side or is a formatting error. http://answers.yahoo.com/question/index?qid=20080310092638AAj06k8 Note: formatting errors are a problem if a) has a low-level format error (the associated vendor of your device should offer a utility to fix this for free), b) file system error by writing to device in the incorrect manner (can happen if the format used on the card is proprietary to the device it is used in and using a PC for direct access could break the file-system. Today's standards make this less of an issue, but still exists for some. c) file system errors can OFTEN cause this and many other issues (even losing all data) if it is not properly ejected from your computer. You must ensure that you (100%) eject the devices from your computer, wait for any related message to appear that it is safe to remove, before actually taking it out of the computer! This is very important. MS Windows, in lieu of "emulating speed" does so by not completing any disk writes (especially to plugged in media) on-time and waits for you to take a break when it goes back and finishes the job. Failure of this process to complete will eventually lead to file system corruption, tables not updated, open files not closed and a complete loss of information on the device. File locking is the least of the trouble in this case.