Restore the size of USB drive in Linux

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  1. Run lsblk command to find outUSB partition. In this case you see the USB flash drive is sdb so you VERY CAREFULLY run:
    #sudo dd if=/dev/zero of=/dev/sdb count=100
  2. Create a new partition table in the format you like:
    #dd if=/dev/zero of=/dev/sdb bs=32k count=1
  3. Create mounting point:
    #sudo mkdir /media/external
  4. Mount the Drive: We can now mount the drive. Let’s say the device is /dev/sdb1, the filesystem is FAT16 or FAT32 (like it is for most USB flash drives), and we want to mount it at /media/external (having already created the mount point):
    #sudo mount -t vfat /dev/sdb /media/external -o uid=1000,gid=1000,utf8,dmask=027,fmask=137
  5. OR
  6. If the device is formatted with NTFS, run:
    #sudo mount -t ntfs-3g /dev/sdb1 /media/external
    Note: You must have the ntfs-3g driver installed
  7. Unmounting the Drive:
    #sudo umount /dev/sdb
  8. ENJOY

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