Dual boot Arch Linux with another Linux (os-prober)

From this video you will learn how to update Arch Linux bootloader to dualboot it with another Linux system.

1. Mount the partition with the new system.

- List the partitions of your system:
lsblk

- Mount it:

sudo mound /dev/sdXx /mnt

2. Install OS prober:
sudo pacman -S os-prober

3. Update GRUB:

You should see that GRUB has found your second Linux system.

When your GRUB is updated, reboot your Arch Linux and try to boot into the second system.

If you configured your Arch Linux to skip GRUB menu and boot as fast as possible, as I showed it in my video “10 Things to do first in Arch Linux”,
You need to press ESC or SHIFT key during the boot to enter the GRUB menu.
If you have not touched your GRUB, you should see this GRUB menu automatically.

And as you can see here, there is a choice to boot either Arch Linux or Linux Mint, which is my second system in this case.

I hope this tip was helpful. I would appreciate if you like and share this video.

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[nita]

I know this video is old, but you saved me from a huge headache, thanks man.

[AverageLinuxUser]

There is one drawback of this setup. You need to repeat the procedure of mounting and updating GRUB manually every time you update kernel in your main or your second system. If you have several additional systems, you need to mount them all and run GRUB update.

[midhunrajr]

Great info sir. Actually Manjaro is my first and arch is the second. I installed arch by overwriting the existing grub. But then the Manjaro entry was lost from grub. And thanks to your video, I used os prober. And it worked. So even if the main os is the second one, it works.

[sirrobertdowneysenior]

Precise, useful, to the point, no nonsense, no idiotic politics I can keep all your videos offline in case its my last day on internet. Thank you ALU.

[matiaslouzaoataria]

Thank you so much, saved my grub installation :) YOU CAN OF COURSE DO THIS WITH WINDOWS A SWELL, I just tried what this guy proposed and it worked like a charm, only thing to mention is that I don't know where to windows bootloader is so I just mounted all windows partitions to /mnt2, mnt3 and etc and it worked just fine

[robert_wigh]

Great! That wasn't as difficult as I initially thought, actually.

[imnotpathetic]

Thanks dude, it works with windows 10 too. I just have to mount my Windows EFI partition for it

[RahulSharma-ojik]

Can you please make a series of Arch linux videos for the now comers ....starting from the basics to the advanced things!

[FOSSuser]

Like the quick yet informative video on a topic I was interested in to help with dual boot with arch or endeavour and a non systemd void linux have a 250GB boot drive to work just need one new partition. Feedback on video is that might want to show the partition scheme used when adding the other distros

[kevinhoskins]

Thank you very much for this video and its instruction. I just replaced a Garuda installation with Parrot OS on a drive that also has a Manjaro installation. After the Parrot installation, I was unable to boot into that OS until I ran the command sequence you provided. Parrot booted and is updating as I leave this comment. Again, thanks!

[luzten]

Great video as usual. I just had recently a Kernel Panic issue because Ubuntu decided to update the Grub without recognizing my main installation of Arch so I was unable to fix it. Until I did something similar of what you explain in the video but using a live cd and now everything is working good again. But it was kinda hard for some reason the grub just keep failing to recognize the mounted partition of Arch inside Ubuntu. The live usb made the trick gladly and I have to touch other stuff but at the end of the day everything worked out. Thank you for the videos.

[dinars]

Thank you very much mate <3, you saved me .

[cjh_yt]

The problem is when os prober scans for specific distro like arch linux it thinks the vmlinuz and init is in root but its in boot partition resulting in a error like "file not found vmlinuz"

[rongrongie]

Thank you..I really mean it you just save my other ubuntu partitions :)

[GooogleGoglee]

Thank you for this clear video
Can you make a video for dual boot arch with a windows 10 already inatalled?
I still dont want to get rid of Windows since maybe one day I want to resell the computer with the original OS installation.
Thank you!

[abhishekshah]

I tried the same thing but with Ubuntu as my main system and Fedora 29 as secondary. Grub failed to load fedora 29 even though it detected it during update-grub

[debojyotimr]

i cannot install fedora without boot loader ... like linux mint .... 😢

[eldersprig]

what if instead of using separate partitions for each distribution, you used the LVM?

[xinzhang]

Another question: If I want to use Office Word (Because I usually write literature by it and LaTex isn't easy for my tutor to annotate) on Debian or others, must I dual boot? Maybe virtual machine take much space.

[shellcasing]

Here's my situation: there's an SSD in my laptop that's booting Ubuntu. Now, I removed the ODD of the laptop and added an HDD in that caddy instead, so that my laptop now has an SSD and an HDD, even though it wasn't made that way. I have installed Windows on the HDD but it doesn't boot. By the way, the BIOS doesn't recognize the new HDD; I'm not surprised since originally there's supposed to be an ODD. How can I add an entry for the new Windows drive in GRUB 2?