The basic idea of starting a USB flash disk Linux and WinPE is as follows: process the USB flash disk, enable it, and install GRUB4DOS. Then, integrate various boot disks to enable grub4dos. Production Process: A, U disk can be started to enable processing U disk Boot Mode USB-HDD, USB-ZIP and USB-CDROM, etc., but each kind of compatibility is not very good, U + startup technology can improve startup compatibility. You can use UltraISO to note that you must format the USB flash disk before enabling and processing. Therefore, you must back up data first. 1. Use the formatting method provided by windows to format the USB flash drive (right-click the drive letter and choose not to select a quick grid). 2. Download UltraISO and win7pe. Www.2cto.com 3. insert a USB flash drive and run UltraISOPortable. Select "file"> "open" on the main menu. In the displayed "Open ISO file" dialog box, select win7pe. for ios, click "open" and choose "start"> "Write hard disk image" from the main menu. In the "Write hard disk image" dialog box displayed, select the USB flash drive letter, select USB-HDD + mode (default), click the write button, UltraISO will prompt "Warning! All data on the drive (-X-:-capacity-)-model-will be lost! Are you sure you want to continue ?", Click "yes" to start the U disk production 4. The U disk to write a few files deleted, we do not need him, write his purpose is just to do USB-HDD + boot. 2. GRUB4DOS installation GRUB4DOS 1. Download GRUB4DOS and grubinst: http://sourceforge.net/project/showfiles.php? Group_id = 104188 2. Decompress grubinst, run grubinst_gui.exe, select the corresponding disk, and then rewrite the MBR of the USB disk. 3. decompress the downloaded GRUB4DOS latest version (0.4.4), and place the two files grldr and menu. lst in the root directory of the USB flash drive. 4. OK. Your USB flash drive can start GRUB4DOS. 3. Integrate Win7PE 1. the downloaded win7pe. decompress all content in iso to the root directory of the USB flash drive. 2. in menu. add the following content to lst: title Win7 PE find -- set-root/bootmgr chainloader/bootmgr www.2cto.com 4. veket 1. create a "veket" folder in the root directory of the USB flash drive. 2. use ultraisoto download the veketimage file (about veket的下. )ininitrd.gz, qrky-888.sfs, vmlinuz extracted to the "veket" folder, if the file name is uppercase letters, please change to lowercase 3. in menu. add the following content in lst title Veket USB-SYSTEM kernel/veket/vmlinuz root =/dev/ram0 PMEDIA = usbhd initrd/veket/initrd.gz download Related: UltraISOhttp: // response? Group_id = 104188% 20