How to Format 64GB SD Card from exFAT to FAT32

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Why can’t I format my SD card to FAT32?

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“I have a Sandisk Ultra 64GB SD card and cannot get it to a FAT 32 format. Tried few links, no success. I am using Windows 10.  Is there any way possible to achieve this?”

 

SD cards are a popular storage device for many different types of equipment, and range in space from a couple MB to a couple GB.  Most devices need the format of FAT32, including the Rasbperry Pi and programs ran on it, which boot from FAT32.  We built a Raspberry Pi with a 64GB SANDISK, installing Noobs on it, Raspbian and Eleclite, if you are building a similar project, you can find our instructions on our Software page.  We found windows does not let you format any device over 32MB into FAT32, which makes formatting an SD card of 64GB hard to handle.  If you have tried using CMD or command prompt to achieve this, you may have seen an error saying Windows was unable to complete the format.

 

With Windows 10, you have an option to use this command.         format /FS:FAT32 X:
Replace the letter X with the drive letter for the external device you wish to format and hit Enter.   

Note – This process may take several hours.

If you do not have Windows 10, and are on Windows 7 or a variation of it, or just don’t feel like waiting an hour or so to find out if this works or not, there are other options.

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Format 64GB SD card/USB flash drive to FAT32 with Windows GUI of fat32format.

 

A fast, effective, and simple tool from http://www.ridgecrop.demon.co.uk/index.htm will get the job done.  There are plenty of tools out there that will format your SD card from a 64GB exFAT to FAT32, you just need to do your due diligence to find a safe one.  This technology has been around for a while, so the internet has plenty of links to programs for this.  I found many programs that all claimed to do the same thing, but my top interest was security. 

We found a simple program referenced in multiple forums, with reviews from those forums.  We cross referenced with an internet search for that program name, and went way past the first couple pages, and did so on a couple different search engines.  The tool, fat32format, can be found at http://www.ridgecrop.demon.co.uk/index.htm?fat32format.htm.

The program fat32format, has been deemed safe to use, we ran virus scans on it after download, and tried the program out.  It works just as advertised, it formatted my SANDISK 64GB Micro SD Card from exFAT to FAT32.   It did so in about 10 seconds.

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This program works excellent for this specific task. For anything else, 32GB and less, you may use the SD Memory Card Formatter from sdcard.org.  Just remember, it will format anything larger than 32GB as exFAT automatically, and you need a tool like the one above as a workaround.  

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