Questions tagged [os-prober]

os-prober is a command that lists other operating systems. It is used during installation and reconfiguration to create a GRUB boot menu that shows other installed OSes as well as Ubuntu.

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18.04: Does os-prober work well for kernel v5?

os-prober on an Ubuntu 18 instance using the Google Compute Engine (image: ubuntu-minimal-1804-bionic-v20200220 - "Canonical, Ubuntu, 18.04 LTS Minimal, amd64 bionic minimal image built on 2020-02-20")...
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sudo update-grub is not affecting the grub menu

I have multiple OS's installed on my laptop, and am running grub from Ubuntu to boot them. If I run sudo update grub it finds all the systems, as you can see in the image. The problem is that after ...
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grub and os-prober don't see Windows10 after upgrade from Ubuntu 16.04 to Ubuntu 18.04

Can be related to Ubuntu 18.04 Server unable to see Windows 10 OS as dual boot My Initial configuration: Dual boot Windows 10 and Ubuntu 16.04 on separate drive since 16.04 release. No problem,both ...
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os-prober & 50mounted-tests

Today, as soon as I switched on my Xubuntu 16.04.4 computer, one CPU core went to 100% and there was constant HDD I/O for over 2 minutes. I looked at the system log afterwards and there were lots of ...
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1answer
9k views

os-prober does not return Windows 10 on another drive

I'm 1-day old to Linux, so excuse me if my question is not very clear! I have my Windows 10 on HDD. I added an SSD and installed Ubuntu on it. Both boot perfect except Windows is always the default ...
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2answers
4k views

How to bypass or stop the very long run times of grub2/os-prober?

Whenever I upgrade Ubuntu 16.04 and there is a kernel upgrade, the update process takes a very long time when running (os-prober) and also generates the grub configuration multiple times. And for ...
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How to repair grub to work with multiple hard drives?

On my computer I have multiple hard drives. One of them has Ubuntu 14.10 and the other has Windows 8.1. I messed up my boot loader and know only Ubuntu appears in the grub list. Windows 8.1 is on the ...
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1answer
923 views

How do I switch back to Windows 8?

Okay so I am taking an online course to learn Linux and Ubuntu. On my desktop that has windows 8.1, I downloaded Ubuntu and then watched a couple of videos to make sure that I partitioned the drive ...
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OS-prober is taking a really long time

Any time I update my GRUB configuration or install a kernel update that has the update manager update my grub configuration, the os-prober part of the configuration hangs for sometimes 10-20 minutes. ...
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1answer
4k views

os-prober and update-grub can't see/find working Windows install

I have installed 12.04 next to a Windows 7 install, on a partitioned 3 TB hard disk. If I use F12 during boot to review boot options from the BIOS, Windows 7 and Ubuntu boot normally, but the Ubuntu ...
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2answers
2k views

Windows 7 doesn't show in GRUB menu

I have dual boot with Ubuntu and Windows 7. I needed to reinstall W7 and after that I reinstalled grub so that I could access both Ubuntu and W7. Unfortunately my GRUB menu doesn't show W7. I tried ...
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How can I set kernel parameters for a specific installation involving os-prober?

Beside Ubuntu i also have an Arch installation. I plan to maintain the grub-configuration from my Ubuntu. The whole update-grub - grub-mkconfig - os-prober-chain works just fine. I know I can set ...
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1answer
894 views

OS-Prober not recognized! [closed]

So due to some shenanigans with trying to get rid of all traces of grub-customizer, I accidentally hit "delete" an extra time while in a root nautilus, and deleted my os-prober script in /etc/grub.d/...
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GRUB does not detect Windows

I have finally installed Ubuntu on my second drive. When I start my computer GRUB only offers me to boot Ubuntu, not Windows 7. What needs to be done so that I can choose between Ubuntu and Windows in ...
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os-prober doesn't find Arch Linux until I manually mount Arch Linux partition

Title says everything. Here is output of Boot info script: http://paste.ubuntu.com/1169338/ sudo os-prober returns only Windows partition: sudo os-prober /dev/sda2:Windows 7 (loader):Windows:chain ...
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3answers
5k views

os-prober fails to identify a linux system so I need to write a custom grub2 menu entry as a workaround, how?

I want to add a custom menu to grub2 like this (as /etc/grub.d/40_custom): #!/bin/sh exec tail -n +3 $0 # This file provides an easy way to add custom menu entries. Simply type the # menu entries ...