Format USB Flash Drives For Mac

Most off-the-shelf USB flash drives are formatted for Windows computers. You can easily reformat a drive to use the standard Mac OS Extended format with the Disk Utility app. Keeping the drive in MS-DOS format may be a better option, however, if you plan to use it on both Mac and Windows computers.

Comments: 6 Responses to “Format USB Flash Drives For Mac”

    Terry Haddow
    3 years ago

    Would “ex-fat” be better for a drive going between Windows and Mac ?

    3 years ago

    Terry: Yes.

    Carol
    3 years ago

    But if a relative with a Windows computer gave me a USB drive full of photos and my Mac does not recognize it, this will erase everything, right? Is there a solution?

    3 years ago

    Carol: Your Mac should be able to read any USB Flash drive that comes from a Windows machine. No need to erase it if you are using it to go between Mac and Windows computers.

    Nassar
    3 years ago

    I did this on my SanDisk16GB TD to create a bootable Sierra installer using restore in DU I keep getting a “Couldnt unmount disk” error. I used FirstAid on it and it says the volume needs to be repaired. Sadly cant do this in the “new” DU introduced in 10.11. I tried to repair it on diff mac running 10.6.8 and I get stuck on “5min left” for like an hour. Cant force quit DU even, until I remove the TD from the USB port. I zero’d out the TD using terminal and tried all over again. Still same issue

    Nassar
    3 years ago

    Sorry, I contacted the manufacturer and they said its a damaged flash drive. Never mind my comment above and thanks again Gary.

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