Wont boot after a system update

My apologies if I'm wrong posting this here but I'm running out of ideas. I tried turning off safe boot UEFI settings and also tried using Legacy BIOS, only to find out there were no boot sequence for Zorin so I returned to UEFI.

I'm using the XPS 15 and I was using Zorin for about 4 months now. Previously distro hop from Garuda.

Edit: because something is keeping me from putting a screenshot. Heres is a reddit link inquiring the same question: https://www.reddit.com/r/zorinos/s/Euw2GYXQOr

Have you tried reverting back to an Older Kernel from
Grub Menu
Advanced Option for Zorin?

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If your Grub Menu is hidden at boot, try tapping esc or tab at the motherboard splashscreen furiously to tell it to appear.

When you see it, select Advanced Options for Zorin
Then arrow key down, skipping options that include (Recovery) to Zorin On... an earlier kernel version number.

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Thanks for replying. I would update this post when it worked, im away from my machine to check.

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Welcome to the Forum!

Do You remember what Updates came?

his post is kinda blurry but i think its a MOK error?

I did changing the kernel version as instructed but zorin still wont boot .

Its showing an error prompt as:

Failed to start gdm.service - GNOME Display Manager

Can you try:

sudo apt install --reinstall zorin-os-desktop

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In "drop to root shell prompt" at Advanced options of Zorin?

Beside @Aravisian's posted Command, try please this too:

sudo apt reinstall gdm3

To me it isn't clear where to enter that command when the desktop isn't reached. Is it not required to run a recovery kernel, enable the network, open a root shell and to mount the drive to make it writeable?

I belive you can get a terminal at the grub before OS starts to enter commands @Forpli

I'm just wondering why no one gave instructions to do this...I have not so much experience with the procedure, but I think @Zetsumeiken should select an older kernel (with recovery mode) in grub menu at Advanced options for Zorin, then in the recovery menu move with the arrow down to "Enabling network", press return and enable the network.
As next step, move with the arrow down and select drop to root shell prompt and enter there

mount -o remount,rw /
apt reinstall zorin-os-desktop
apt reinstall gdm3
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ok first i have mine setup to see the options screen on boot for 5 secs then on that screen i move it down to advance like this


then i hit (on mine anyways) the esc key and i get this screen

i belive this allows some commands to be entered at this stage. hope this helps @Forpli ...... :grin:

A quick search revealed that very few commands are available in this minimal bash like line - and it seems not to be possible to use the package manager there.

hmm saw a post havnt tryed yet but can use ctl+alt +F1 to get a terminal ill let ya know if that works may have been for ubuntu 22.04 tho

Thanks for thr help however thr shell prompt says:

mount -o remount,rw /
apt reinstall zorin-os-desktop
E: You don't have enough free space in /var/cache/apt/archives/,

I tried clearing with:
sudo apt clean
flatpak uninstall --unused

But still the same situation.
I cant type all the prompts btw. Hope this helps to describe my predicament.

I'm wondering if this error message means that your system won't boot anymore because the hard drive is full—for example, because it's been filled with logs. If there's no more space available for writing, it won't boot properly.
Unfortunately, I don't know what might help you right now.
You could try booting from a Zorin USB drive in “Try Zorin” mode and then running the Baobab program (=disk usage analyzer) to see if the drive is full.

If the logs are the culprit, limit the size of the logs first.

You probably must do this in the root shell prompt, but I'm not sure how to proceed in your case.
Unfortunately there are only few helpers at the moment in the forum, perhaps because of the heat.

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Thanks for reply. I have used my ventoy usb to try out zorin and then using the trial, deleted some of the heavy files in my sdd. That fixes the the issue and zorin now boots normally.

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Glad to hear!