Install Windows and Ubuntu dual system

1. Install Windows. In the hard disk partition, reserve a portion of unpartitioned space to use as an Ubuntu system installation.

2. Use UltraISO to burn the ubuntu ISO file to a USB stick and launch it with a USB stick to install Ubuntu.

3. After the installation is complete, reboot the system and unplug the USB drive, and you can see that the startup option for Windows has been added to the startup selection.

4. When the dual system occurs, the Windows system time is out of sync, workaround method: Turn off Ubuntu UTC.

To modify the RCS file:

sudo gedit/etc/default/rcs

Find Utc=yes this line, change to Utc=no, save, time modification immediately effective.

5. Modify the default startup item

sudo vim/etc/default/grub

Grub_default=0//The first boot option is 0, modify 0 for the last one.

sudo update-grub

Install Windows and Ubuntu dual system