How to make a Bootable pendrive

 It is possible to make a bootable device without using any third-party tool, but the process will depend on the type of device you want to create. Here are some general steps you can follow:

USB Drive (Windows)

1. Insert the USB drive into your computer
2. Open the Command Prompt as an administrator
3. Type "diskpart" and press Enter
4. Type "list disk" and press Enter to show a list of all disks on your computer
5. Identify the disk number for your USB drive (it will typically be the smallest size)
6. Type "select disk [disk number]" and press Enter (replace "[disk number]" with the number of your USB drive)
7. Type "clean" and press Enter to remove all partitions and data from the USB drive
8. Type "create partition primary" and press Enter to create a new primary partition on the USB drive
9. Type "select partition 1" and press Enter to select the new partition
10. Type "active" and press Enter to make the partition active and bootable
11. Type "format fs=ntfs quick" and press Enter to format the partition as NTFS
12. Type "assign" and press Enter to assign a drive letter to the USB drive
13. Copy the contents of the Windows installation disc or ISO file to the USB drive