Cannot boot Windows after installing Zorin OS

General Help
1

I clicked install alongside windows... and I can't boot windows. There's only Zorin OS(core) in bootloader. I used some advice of chatgpt, but couldn't fix an issue yet. I had dualboot lubuntu with windows around 7 years ago. I hoped to get easy installation process, but no miracle. If someone ready to help me I will appreciate it.

2

Zorin OS 17 is based on Ubuntu 22.04.

At the release of Ubuntu 22.04, Canonical made the decision to default to disabling the os-prober by default.
Their reasons are... as always... Security...
But in the end, this may be causing your issue.

Can you open your /etc/default/grub file either in terminal editor

sudo nano /etc/default/grub

Or your preferred text editor

sudo -i

nautilus

Navigate to "Other locations" > Computer > this should land you in Root, then double click etc then default and then right click grub and select Open with Text Editor

Look for:

GRUB_TIMEOUT_STYLE=hidden
GRUB_TIMEOUT=0

Make the values be "menu" instead of "hidden" and "10" instead of "0"

GRUB_TIMEOUT_STYLE=menu
GRUB_TIMEOUT=10

Look for a line that says

GRUB_DISABLE_OS_PROBER=true

If it does not exist, you can just paste the line in. But it must be set to false:

GRUB_DISABLE_OS_PROBER=false

Now, save the file. If using Text Editor, use the save function.
If using terminal editor, ctl+o to overwrite, then enter to save current configuration, then ctl+x to exit the editor.
Now, in terminal, run:

sudo os-prober

This should detect Windows.
Next, in terminal, you must run

sudo update-grub

for the changes to take effect.

4 Likes
4

I couldn't launch os prober, it seems everything done right. But I have link generated by os prober when I launched live version of Zorin OS Ubuntu Pastebin

5

Do you have removed the # at the beginning of the line (if there was a #)? This is important.

GRUB_DISABLE_OS_PROBER=false

And also to run sudo update-grub afterwards.

2 Likes
6

Well... It says I need to log in to your account to view the pasted contents... -chuckle-

1 Like
7

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