Some computers don’t have a CD/DVD drive, so you could not install Windows XP / 7 from CD/DVD disc. Furthermore, CDs/DVDs are very easy to scratch, usb flash drive is easy to carry, it’s more reliable and flexible than CDs/DVDs. So it’s very wise to burn ISO to USB Pen Drive, then boot computer from USB and install Windows system or do rescue task. UltraISO is an excellent software which can do these things for us, just open an iso file then click “Bootable” – “Write Disk Image…”, UltraISO will make a bootable usb disk from iso file for us automatically. However UltraISO is a commercial software, the following software is free of charge for anyone.
PeToUSB is a free and portable application which could format and make bootable USB Flash Drive, and copy BartPE/WinPE build to usb disk. It also allows you backup and restore the MBR( Master boot record ).
Visit the project page: http://gocoding.com/page.php?al=petousb.
WintoFlash gives you the ability to transfer Windows XP / Windows 7 / Vista / 2003 / 2008 setup package to usb drive, it also allows you transfer Windows PE( Windows XP / Windows 7 / Vista / 2003 / 2008 ) to usb pen drive in a few clicks. It has build-in multilanguage support, and has a wizard mode for novice users and an advanced mode for experienced users.
Download it from softpedia.
3, A Bootable USB
A Bootable USB( ABU ) allows you build bootable usb drive from Windows Vista / Windows 7 / Windows 2008 iso file or dvds.
Download ABU from dropbox.