To do it on the Mac, plug in the flash drive, and open Disk Utility (in your /Applications/Utilities folder). The drive should appear in the list on the left of the DU window.
Select the drive, then click the Erase tab. On that tab, select MS-DOS (FAT) as the volume format, choose a disk name if you want to, then click Erase, and wait.
That said, if your drive just 'didn't work any more' after a while, it may be faulty and it's possible that re-formatting it won't help. (All flash drives do have a finite number of read/write cycles before they don't work reliably any more, too, although it's unlikely you've reached that limit through normal usage.)
Aug 23, 2008 1:22 PM
On the left side of the window are the drives connected to the computer. Select the capacity of the drive respective to the one containing the device you wish to format then click the Erase tab. Example: If the drive is called 'NO NAME', directly above that, you should see the drive capacity of 'XXXX'. Select this capacity. To format a flash drive on a Mac, plug in the drive and open the 'Applications' folder, the 'Utilities' folder and then 'Disk Utility.' Your flash drive should be listed in the left menu. Dec 29, 2020 To format the USB drive to FAT32, follow the next steps: Step 1. Connect the USB flash drive to your Mac computer. Go to Applications Utilities Double click and open Disk Utility. Select your USB flash drive on the sidebar, choose Erase. Rename the USB flash drive (optional).
How To Format Flash Drive On Macbook Pro 7
How To Format Flash Drive On Macbook Pro 7
To format the USB drive to FAT32, follow the next steps: Step 1. Connect the USB flash drive to your Mac computer. Go to Applications Utilities Double click and open Disk Utility. Select your USB flash drive on the sidebar, choose Erase. Rename the USB flash drive (optional).