The first kind of method:
The original U disk installation, the tool produced by the U Disk boot menu with WINDOWS7 operating system installation function, use this feature can be Win7 system perfect transplant to your U disk. This feature does not need to enter PE without virtual optical drive, not subject to FAT32 and NTFS file system restrictions, no longer format the U disk, speed far faster than the CD installation, is a pure u disk installation. Since the start command has swapped the disk order, so there will be no installation when the first disk is a USB drive case (solid machine test pass, do not test this installation method under the virtual machine).
Specific steps:
1, the first use of the old Peaches U disk start making tools to start the U disk.
2, find Windows7 ISO image, with UltraISO or winrar open Win7 ISO image, and then extract/extract all files to your U disk root directory.
3, finally in your U disk to find a file named Bootmgr, the bootmgr renamed to Win7mgr.
4, with a U disk to start the computer, select Menu 11, and then select Menu 2 directly installed Win7 original operating system.
The following steps and CD-ROM installation is not much different, when the installation process automatically reset when you unplug the U disk can continue to install.