A bootable USB drive is a useful tool for any IT professional. It provides an additional installation media for malfunctioning computers or systems that aren't equipped with a DVD drive. A USB flash drive or key can also be loaded with diagnostic and repair utilities for the various systems you might encounter on a daily basis. Creating a bootable NTFS USB drive is not complex. The key is to use the Diskpart and Bootsect commands in combination.
Open the "Start" menu and use the search field to launch the Diskpart utility. The Diskpart utility is a command line program used to partition physical disks.
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Type "list disk" to show all the disks attached to the system. Make a note of the USB drive's disk number.
Type "select disk 2" to select the USB drive. Replace "disk 2" with your actual USB drive number.
Type "clean" to erase any existing partitions on the USB drive.
Type "create primary partition" to use all the space on the drive. Use the "size=" parameter if you want to limit the size of the primary partition.
Type "select partition 1" to select the primary partition.
Type "active" to mark the new disk as active.
Type "format fs=ntfs" to format the partition.
Type "assign" to assign a drive letter to the USB drive.
Type "exit" to leave the Diskpart Utility.
Type "bootsect.exe /nt60 U:" to make the USB drive bootable. Replace "U:" with the drive letter Diskpart assigned to the USB drive.