Modify the default boot system and startup delay under Kali and Windows dual systems

After Windows and Kali dual system installation is complete Kali is the default boot system, now set Windows as the default boot system and change the selection system wait time

1. Note the serial number of Windows when you run to the System selection menu at boot time. The system selects the menu ordinal from top to bottom with 0 as the initial count.

2. Start the terminal after entering the Kali system.

3. Enter in Terminal: Leafpad/etc/default/grub

4. Find the "grub_default=0" line. This row represents the default start sequence number. 0 indicates that the default boot system is Kali, because Kail is ranked at the top of the system selection menu with the ordinal number 0. Now change 0 to the Windows serial number you just noted, which is to set the default boot system to Windows.

5. Find the "grub_timeout=5" line. This line indicates the delay of the system startup selection menu. The unit is seconds, which defaults to 5 seconds of delay. Can be changed according to personal preference.

6. Be sure to save and exit the editor! Be sure to save and exit the editor! Be sure to save and exit the editor!

7. In the terminal input "Update-grub" update, after the update is complete OK.

Modify the default boot system and startup delay under Kali and Windows dual systems