He is samsung notebook is win10, through u disk installed centos7 yesterday, normal operation is normal after installation is complete, restart the computer yourself I give it off, go home,
Today open a computer, a figure of a situation, I again through the f2 to check the Boot option found original win10 priorities, in figure 2,
Look at the boot interface is selected UEFI and CSM OS,

I put the usb plug in again and again in to install centos interface, to set up the disk space here, you can see inside the computer in the original data, as shown in figure 3 shows,

But why I switch on both systems can't open?