Win7 installed after the Ubuntu Linux, boot screen how directly into the Linux, Win7 how to start

Repairing Windows 7 Startup Items
After restarting Ubuntu, the results found that the startup item for Windows 7 was selected and the Ubuntu installation screen was entered. Below is a description of how to fix, enter the Ubuntu system, open "Application---attachment--terminal", command the following sudo gedit/etc/default/grub
Modify Grub_timeout= "10"
Then enter sudo update-grub in the terminal
The update command automatically finds the Windows 7 Startup items. and automatically update the/boot/grub/grub.cfg file. Go to "Location---computer---win7 system disk"
All the files (Vmlinuz,initrd.lz,grldr,grldr.mbr,grub.exe,menu.lst,boot.ini,ubuntu.iso) that were copied to the C drive when the Ubuntu system was installed are moved to the Recycle Bin. In particular, the ISO file, if not deleted, restarts into the Win7, and will enter the Ubuntu installation interface

Win7 installed after the Ubuntu Linux, boot screen how directly into the Linux, Win7 how to start