How to set the USB flash drive as the first boot in Lenovo Qitian USB flash drive installation system?

The specific operation process is as follows:

1. Insert the USB flash drive and press F2 to enter the bios when starting. You can also press F 12 to enter this interface, then select BIOSSetup and press enter to enter BIOS.

2. expand the SecureBoot subdirectory, and then click SecureBootEnable to select Ddisabled.

3. Select BootSequence in the General subdirectory, and select legacy in the bootlist option. Floppy disk, hard disk, USB, CD-ROM drive and network card are listed from top to bottom by default.

4. Then click AdvancedBootOptions, check EnableLegacyOptionROMs, click apply, and then click exit to exit, and the computer will restart;

5. If the settings are wrong, click Restore to restore the settings and select the BIOS default value.

6. Press F 12 to enter the startup item selection page during the restart process, and select USBstoragedevice to enter the USB flash drive.