If your looking to Format you SD Card that you feel has been Hosed and is longer working, its best to NOT Use the Windows Format utility, as many times these cards will stop functioning if incorrectly formatted.
SDCard.org has a great utility for formatting SD/SDHC/SDXC cards that have become unusable. As a forewarning, you will most likely lose all your data when formatting your Card, so be aware of that. But the good part about this is that you will actually be able to use the card again in your camera.
Here is the Official download link of the SD Formatter Utility:
https://www.sdcard.org/downloads/formatter_4/index.html
In terms of Operating system compatibility, here is the official operating systems that this utility will work with:
[ Updated April 2018 w/ Latest Support for Operating Systems ]
- Windows 10 Version 1607 (32/64-bit)
- Windows 10 Version 1511 (32/64-bit)
- Windows 8.1 (32/64-bit)
- Windows 8 (32/64-bit)
- Windows 7 (32/64-bit)
Windows Download Page: https://www.sdcard.org/downloads/formatter_4/eula_windows/index.html
And for Apple:
- MacOS 10.12 Sierra
- Mac OS X 10.11 El Capitan
- Mac OS X 10.10 Yosemite
- Mac OS X 10.9 Mavericks
- Mac OS X 10.8 Mountain Lion
- Mac OS X 10.7 Lion
Apple Mac Download Page: https://www.sdcard.org/downloads/formatter_4/eula_mac/index.html
Other Downloads:
