IT Connect
Information technology tools and resources at the UW

Create Bootable USB Media

How to create a bootable device:

  • UEFI USB boot requires that USB disks should be have at least 4 gigabytes of capacity, the boot mode should be set to UEFI or UEFI native and not UEFI+CSM or UEFI Hybrid, and you may have to disable Fast Boot or Quick Boot on some systems.
  • Via Disk Management, reformat flash drive.  FAT32 strongly recommended, NTFS or exFAT may not boot successfully in all UEFI/BIOS configurations.
  • Mark partition ‘active’.
  • Copy all of the  SCCM OSD boot files from I:cac\nebula\sw\apps\SCCM OSD

If that doesn’t work, completely clean the drive and prepare it for use with the following instructions:

  • Launch a cmd window: Run as Administrator
  • Windows 10, right click on the Start button and select Command Prompt (Admin)
  • Launch the DiskPart utility by typing ”diskpart” at the Administrator elevated command prompt.
  • Run the command: “list disk” to check the status of your drive.
  • Run “select disk N” where the “N” is actually the corresponding number of your USB drive.
  • You can most easily tell which is the proper disk by looking at the capacity
  • Run “clean”.  CAUTION: This will erase everything on the disk!  Make sure you select the correct disk!
  • Once the thumb drive is clean, run “create partition primary”.
  • Select the new partition: “select partition 1”
  • Now make the partition active by entering “active”
  • Assign a drive letter with “assign”
  • Format the drive as FAT32 by running “format fs=fat32 quick”
  • Type “exit” to quit
  • If you are still having problems locate and use bootsect with the following command: bootsect /nt60 X: (where X is your flash drive letter)