Unable to select which OS to use on startup

General Help
1

I recently installed Zorin 18 Core, and I installed it alongside Windows 10 on my Lenovo Thinkpad T440 laptop, but I don't get the choice to select which OS to use on startup - what did I do wrong??

2

Is your BIOS set to legacy or uefi?

Are Windows and Zorin installed in the same partition scheme, e.g. both in MBR for legacy or both in GPT for UEFI?

3

Dear Forpli
Thanks for thar super fast reponse! I am not even sure where to look to start checking all of what you mentioned.... :face_with_bags_under_eyes:

4

In your BIOS you should find a tab startup. Look what is set there: legacy or uefi. Don't change it, only take a look.

Are Windows and Zorin installed together on one drive or on different drives?

5

Let me check.....

6

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7

Windows and Zorin installed on the same drive - laptop has only one drive installed....

8

When you start your machine, which OS it directly boots to?

If it boots to Windows, then Disable Fast startup feature in side your Windows.

If it boots to Zorin, then have to enable os_prober in grub config.

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9

It goes straight to Zorin desktop page...as if Windows does not exist at all. I'm not sure how to get to "grub config". This is just so new to me and I am not an IT boffin.... All I did was try it out to see how it goes....

10

This is a simple fix, don't worry just follow the steps.

  1. Launch Terminal & Open the grub config in the text editor using:

    gnome-text-editor admin:///etc/default/grub

  2. Look for a line

#GRUB_DISABLE_OS_PROBER=true

  1. In that line Just remove the # at the beginning and true to false.

GRUB_DISABLE_OS_PROBER=false

Save the changes and close the text editor.

  1. Now update the grub config with:
    sudo update-grub
  2. Reboot your machine, now you should be greeted with grub menu with options to choose from Windows and Zorin.
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11

Thank you...let me have a go :crossed_fingers:

12

I followed your instructions. I removed the # but that oine laready had =false in it, so left it like that - see screenshots. My PC still boots to Zorin, with no option to choose OS....
Will try to send now, battling with file format

13

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14

So....no change at all... :sad_but_relieved_face:

15

GRUB_TIMEOUT_STYLE=hidden

Change hidden to menu

GRUB_TIMEOUT_STYLE=menu

Save and use the update-grub command again. Reboot and check.

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16

Littlekun
You are a GENIUS!!!! All sorted now - I am now able to choose WHICH OS to use on startup. THANK YOU!!!! :folded_hands: :folded_hands:

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