How to Create Bootable Pendrive using CMD(Disk Part Utility)
Open Command Prompt and type Command as per below
1. DISKPART - This starts the utility
2. LIST DISK - This shows the disk number of your USB flash drive. In the image below the USB flash drive shows as Disk 2
3. SELECT DISK X (Replace X with your USB flash drive number, we are using 2 in this example)
4. CLEAN - This wipes the drive
5. CREATE PARTITION PRIMARY size=32000 - Creates a partition
6. SELECT PARTITION 1 - Selects partition 1
7. ACTIVE - Marks the current partition as active
8. FORMAT FS=FAT32 QUICK - This formats the partition
9. ASSIGN - Assigns a drive letter
10. EXIT