Make pendrive bootable compatible NTLDR or BOOTMGR

1. Connect your USB Flash Drive to your computer Format USB drive

2. To Format USB Flash Drive Go to My Computer -> Right click on USB drive and select Format from context menu.

3. Now go to Start Menu->run->cmd (Open Command Prompt) and Type following command

convert i: /fs:ntfs (Where "I" is your USB drive latter)

4. Type Start->run->cmd

Now dir to directory where you have extracted MBRWiz and run following commands

mbrwiz /list (note down disk number of your USB Pen drive)

mbrwiz /disk=X /active=1 (X is Disk Number of your USB Drive)

exit

5. Now open another command window and type following command

J: (Drive letter of Windows 7 iso mounted with demon tool)

CD boot

bootsect /nt60 Y: (Y is drive letter of your USB drive ) It makes compatible with BOOTMGR (vista/Win7)

bootsect /nt52 Y: (Y is drive letter of your USB drive ) It makes compatible with NTLDR (win 98/XP)