Article: You'll need to be on an administrator account in order to open the Disk Partition tool, which is what you'll use to remove the write protection from your SD card. If your computer has an SD card reader, the card should slide label-up and gold connectors-first into the reader. If your PC doesn't have a card reader, you'll need a USB SD card adapter to do this. Click the Windows logo in the bottom-left corner of the screen. Type in command prompt, then click {"smallUrl":"https:\/\/www.wikihow.com\/images\/6\/66\/Windowscmd1.png","bigUrl":"\/images\/thumb\/6\/66\/Windowscmd1.png\/36px-Windowscmd1.png","smallWidth":460,"smallHeight":383,"bigWidth":"36","bigHeight":"30","licensing":"<div class=\"mw-parser-output\"><p>I edited this screenshot of a Windows icon.\n<\/p><p>License: <a rel=\"nofollow\" class=\"external text\" href=\"http:\/\/en.wikipedia.org\/wiki\/Fair_use\">Fair Use<\/a><br>\n<\/p><\/div>"} Command Prompt at the top of the Start menu when it appears. Type diskpart into Command Prompt, then press ↵ Enter. Doing so will confirm your decision and open the Disk Partition window, which resembles another Command Prompt window. Type in list disk and press ↵ Enter. You can find your SD card by looking for a number of megabytes or gigabytes that correlates with your SD card's storage in the "Size" column; the number to the right of "Disk" on the far-left side of this value is your SD card's number.  For example, if you see that the storage size for Disk 3 mirrors your SD card's remaining space, your SD card's number is "3". The top disk (Disk 0) will always be your computer's built-in hard drive. Type in select disk number where "number" is replaced by the SD card's number, then press ↵ Enter. This will tell the Disk Partition tool to apply the next command to your SD card. For example, if your SD card is labeled as "Disk 3" in the list of computer disks, you'd type select disk 3 here. Type in attributes disk clear readonly and press ↵ Enter. You should see a line of text that reads "Disk attributes cleared successfully" appear in the window below your cursor, signifying that your SD card is no longer write-protected.

What is a summary?
Make sure that you're using an administrator account. Plug the SD card into your computer. Open Start . Open Command Prompt. Enter the Disk Partition command. Click Yes when prompted. Bring up a list of your computer's disks. Determine your SD card's number. Select your SD card. Clear the "read only" attribute.