Linux Command line for terminal use

How to repair MBR bootloder dual boot OS.

1. First Make a Any OS Window bootable pan drive. Restart System then Install pan driver in usb port

2. When you get to the Regional settings, select your Location/Keyboard setting then click next. On the next page, click on "Repair your computer." On the next page, if it finds your Windows installation, make sure it is UNSELECTED before clicking next. Then click on "Command prompt". From there, type in the following 2 commands:
3. bootrec.exe /fixboot
4. bootrec.exe /fixmbr

Change a Hostname in kali linux 

 go to kali linux terminal then type following step

1. leafpad /etc/hostname

   change default name you own name

2. leafpad /etc/hosts

   change default name same as same in top command

3. update /etc/hostname

4. update /etc/hosts