Fix problems with the drive in disk utility on mac Make sure the usb drive's lock switch isn't set to lock or read only. The usb should be the last one in the list Now type select disk # (# being the number of your usb flash drive) Type attributes disk to see the current read status of the drive. Follow the 5 disk read only fix solutions on this page and try to change a hard drive from read only on your own.
Open command prompt as an administrator and run (replace x with the drive letter of your usb drive) this will check for and fix any disk errors Running chkdsk can check the file system and file system metadata of a volume for logical and physical errors. To see its attributes, type attributes disk and press enter Simply type attributes disk clear readonly and press enter Now you can format using diskpart or use windows explorer to manage it.
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