Bo main computer: Lenove b40-80
First, enter the BIOS, set the options we will use to install the dual system.
(1) set USB boot to Enabled
(2) set boot mode to UEFI
(3) Turn secure boot off
Second, USB installation WINDOWS10, installed, into the Windows10, in the lower left corner of the Windows icon on the right to open the Disk Management, you can use the compressed volume method, compressed a piece you want to install Ubuntu partition, after compression, This partition will show unallocated, so don't move it at this time.
Second, prepare a U disk, with UltraISO will Ubuntu16.04 write to the USB flash drive,
After the write succeeds, point → portable boot → write to the new drive boot sector →syslinux
Write failed or write file gratitude is not right, you can take double-click ubuntu16.04.iso, the inside file full copy to the format
Install WINDOWS10 + Ubuntu16.04 based on UEFI+GPT