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HOW TO REPAIR AN UNREADABLE USB FLASH DRIVE MAC OS INSTALL
HOW TO REPAIR AN UNREADABLE USB FLASH DRIVE MAC OS MANUAL

Windows users can also use BOOTICE to format and restore a flash drive. Using BOOTICE to repair a corrupted USB drive That’s all there is to it, you should now have a restored USB key with a single exFAT or fat 32 formatted partition that can be read from any computer.

HOW TO REPAIR AN UNREADABLE USB FLASH DRIVE MAC OS INSTALL

For exFAT, (if using Ubuntu or Debian), type apt install exfat-utils and then type mkfs.exfat /dev/sd x1 (replacing xwith your drive letter).

For Fat32, type mkfs.vfat -F 32 /dev/sd x1 (replacing xwith your drive letter).

The last step is to create the fat32 or exFAT filesystem.

Type umount /dev/sd x1 (replacing x with your drive letter).Ĭ.

Type w to write the new partition information to the USB key.Press enter again to accept the default last sector.Next press enter to accept the default first sector.Type 1 to make this the first partition then press enter.Then type p to make this partition primary then press enter.Next we need to create the new partition. (fdisk should automatically select the second partition).ī. Then type d to proceed to delete another partition, if necessary.Type 1 to select the 1st partition then press enter.Next type d to proceed to delete a partition.

Then type fdisk /dev/sd x (replacing x with your drive letter).

Type fdisk -l and note your USB drive letter.

Open a terminal ctrl+alt+t and type sudo su.

First we need to delete the old partitions that remain on the USB key.

HOW TO REPAIR AN UNREADABLE USB FLASH DRIVE MAC OS MANUAL

The following manual tasks to restore a USB drive can be performed from a Linux terminal window.Ī. Restoring a USB key to its original state using Linux