HOW TO MAKE A BOOTABLE PEN DRIVE/FLASH DRIVE/(MIRCO SD TOO) :

>> There are two ways to make bootable pen drive


1> By using command prompt :

• Insert a USB flash drive into a running computer.
• Open a Command Prompt window as an administrator.
• Type diskpart.
• In the new command line window that opens, to determine the USB flash drive number or drive letter, at the command prompt, type list disk, and then click ENTER. The list disk command displays all the disks on the computer. Note the drive number or drive letter of the USB flash drive.
• At the command prompt, type select disk <X>, where X is the drive number or drive letter of the USB flash drive, and then click ENTER.
• Type clean, and the click ENTER. This command deletes all data from the USB flash drive.
• To create a new primary partition on the USB flash drive, type create part primary, and then click ENTER.
• To select the partition that you just created, type select part 1, and then click ENTER.
• To format the partition, type format fs=fat32 quick, and then click ENTER.
• Type active, and then click ENTER.
• Type exit, and then click ENTER.
• When you finish now prepare your custom image(mount image using software like "power iso", and then copy all mounted image data to your USB flash drive.

    2> By using software ,there are many few of them are (you can download them & use)

•  WinToBootic
•  RMPrepUSB
•  Universal USB Installer
•  UNetbootin
•  WinUSB Maker
•  Windows Bootable Image Creator