Warning : make sure you have follow the steps above and are absolutely certain you have selected the correct disk. Before we can do anything else we need to clean these partitions from the drive. To allow Linux to boot from the card it has to create a boot partition and other data partitions formatted for Linux machines. The actual problem stopping Windows from using the SD card is the way the disk has been partitioned. If you look at the screenshot below you’ll see that my Disk 3 has an asterix beside it showing that it is selected. I always advise you to run the list disk command one last time just to confirm that the correct disk has been selected. Replacing the number 3 with the number displayed in your list of disks. Making note of the disk number for your SD card use the following command, We now need to make sure that diskpart has selected the correct disk. You should be able to see which drive is the one you’ve just inserted. If you’re not sure which one is which simply unplug your SD card, the list disk command, make a note of the drives listed, then reinsert your SD card and run the list disk command again. The command for this isįrom my screenshot it’s quite easy to see that Disk 3 is my 16 GB SD card. To identify which drivers which we need to ask diskpart to list all the drives it can see. We’re going to be completely wiping the SD card, but if you run the commands on one of your hard drives by mistake you will completely wipe that instead. It’s VERY IMPORTANT that you ensure that you are working on the correct disk drive before you run any of these commands. The prompt at your cursor should change to show DISKPART> which indicates that you’re now running the correct application.ĭiskpart is a very powerful tool for controlling any disk drive connected to your computer. To start the diskpart application simply type, This will open up a black command prompt window which allows us to talk directly to the Windows operating system using text commands. You should see a dialogue open showing the Command Prompt options. Click the Run As Administrator option. To do this press your Windows key and type, cmd. To access diskpart you need to open a command prompt with administrator access. Using diskpart To Clean and Reformat An SD Card or USB Driveĭiskpart is a command line tool built into Windows that allows us to bypass the normal Windows file management system and talk directly to the disk drive, or SD card, or USB drive. To reclaim the SD card we need to use some low level formatting techniques to completely clean it and then rebuild it as a Windows compatible drive. The SD card is still perfectly okay it’s just Windows is no longer able to use it. It can’t save files to it and you can’t reformat it to make it work again. When you’ve finished using the SD card and try to reuse it as a normal SD drive you can’t get Windows to recognise it. Now your storage device is ready to flash the Raspberry Pi OS image to the device.When you burn an SD card to act as a boot disk for your Raspberry Pi or to install another version of Linux, the SD card is formatted in a special way that means is no longer compatible with Windows based machines. Sudo diskutil eraseDisk FAT32 RPI MBRFormat /dev/disk2 If your SD/USB is mounted at /dev/disk2 and you want to rename the removable storage to 'RPI' your command will be:.Sudo diskutil eraseDisk FAT32 diskname MBRFormat /dev/diskidentifier change diskidentifier to your disk listed in the step above.NOTE: This next command will ERASE existing data on your device.ĭouble check you've located the correct device Locate your SD/USB and take note of the IDENTIFIER.Open up a terminal and get a list of your mounted storage devices:.As such, you need to force the FAT32 type via the command line. Both Mac and Windows Disk Utilities usually do not give you the option to format a 64GB card to a FAT32 type. However, If you have a 64GB, or larger SD/USB, you will need to force format a FAT32 format type. These formats are common for flash storages devices less than 64GB. ![]() ![]() The Raspberry Pi OS (previously called Raspbian) will only flash to SD/USB cards formatted with FAT32 or FAT16 formats.
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