Recentley i installed another linux distro on another partition on my SSD disk. During the instalation i reinstalled grub on the computer, and ever since my Ubuntu OS has been very slow to boot up. This has never been an issue before , and im very qurious to find out what is causing it.

Before this, the boot has been very fast. As soon as i log in the ssd seems to work fine, no change i behaviour.

I reinstalled grub on my ubuntu distro and now grub displayes Ubuntu and an old linux mint distro i have deleted to make room for a new one.

I followwed another solution changing the UUID in /etc/fstab, by baking up the original and creating a new one.

I ran:

sudo vim /etc/fstab

This file was empty so I entered the UUID for the swap memory partition. Now I'm stuck in tty1.

I've tried to reinstall Ubuntu desktop, ctrl + alt +f7, tried to run sudo /etc/init.d/gdm restart nothing works. I've checked a lot of similar issues "stuck in tty1" etc. nothing is working.

Trying to fix the /etc/fstab.bak file by running:

sudo cp /etc/fstab.bak /etc/fstab

is not working beacause i only get "read-only" in the tty1 output. Please help, i dont want to reinstall my OS.

Update:
I tried following this answer, but every terminal command in the answer gives output like: this doesnt exist, no such directory etc.

I've looked at several similar tty1 issues/post and i'm still stuck.