Hide your dual boot Grub
I am using Windows as default OS but I always wanted to have Kali Linux as my secondary OS. So, I can run some tests. I planned to try Kali Linux Live and made live USB stick but problem raised when i had to format the USB for copying other files. Then, i decided to dual boot my PC and I did. Now, I have two OS installed in my computer, Windows and Kali.
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| image: docs.kali.org |
As you noticed the grub loader, it takes you to Kali Linux if you don't choose windows before timeout. Here, i wanted to boot windows as default. I searched for this, and i found the solutions too. Somehow I set windows as default, just by modifying a configuration file and i also found that the grub loader can be hidden and shown by pressing some specified button. I was wondering if i could do that and gave a try to mess up with the configuration file. And ta-da...
What I did?
- Installed Kali Linux as Dual boot
- Set Windows as Default boot
- Removed the grub background
- Hide the Grub
- Update timeout
Dual Boot:
I followed the Kali official documentation for dual boot installation.
Link: Dual Boot With Windows.
Find windows entry:
fgrep menuentry /boot/grub/grub.cfg
Alternatively, you can open the grub.cfg as a text. I found 'Windows 8 (on /dev/sda4)'.
Set Windows as Default:
I updated /etc/default/grub
- GRUB_DEFAULT=0 + GRUB_DEFAULT='Windows 8 (on /dev/sda4)'
Background Image:
GRUB_BACKGROUND=""
Hide Grub during Boot and set timeout:
+ GRUB_HIDDEN_TIMEOUT_QUIET=true + GRUB_TIMEOUT_STYLE=hidden + GRUB_TIMEOUT=1
And the final Grub looks like:
# If you change this file, run 'update-grub' afterwards to update # /boot/grub/grub.cfg. # For full documentation of the options in this file, see: # info -f grub -n 'Simple configuration' GRUB_DEFAULT='Windows 8 (on /dev/sda4)' GRUB_HIDDEN_TIMEOUT_QUIET=true GRUB_TIMEOUT_STYLE=hidden GRUB_TIMEOUT=1 GRUB_BACKGROUND="" GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian` GRUB_CMDLINE_LINUX_DEFAULT="quiet" GRUB_CMDLINE_LINUX="initrd=/install/gtk/initrd.gz" # Uncomment to enable BadRAM filtering, modify to suit your needs # This works with Linux (no patch required) and with any kernel that obtains # the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...) #GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef" # Uncomment to disable graphical terminal (grub-pc only) #GRUB_TERMINAL=console # The resolution used on graphical terminal # note that you can use only modes which your graphic card supports via VBE # you can see them in real GRUB with the command `vbeinfo' #GRUB_GFXMODE=640x480 # Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux #GRUB_DISABLE_LINUX_UUID=true # Uncomment to disable generation of recovery mode menu entries #GRUB_DISABLE_RECOVERY="true" # Uncomment to get a beep at grub start #GRUB_INIT_TUNE="480 440 1"
And then, update Grub:
sudo update-grub
If you want to boot Linux, you need to press "RIGHT Shift" during startup within the timeout, here i set to 1 sec. You may want to change this 1 to other integer value.
Resources:
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