18.04 - Ubuntu cannot boot after crash

I was running some code when my computer, Dell XPS 13 97 froze, probably due to lack of RAM. I performed a hard shutdown but now when I restart, I get this screen:

I've looked around all day but all the commands that other answers suggests don't work for some reason. Dell's support assistant did fix the issue, and when I try to reset the OS factory state it says "unable to find a medium containing a live file system".

I also tried using a USB to try to fix it but I cannot see my local hard drive. The hard drive is there though, since I can see it from the BIOS (it's listed as one of the boot options).

I really don't know enough Ubuntu to solve it on my own.

At the initramfs prompt, type fsck -f /. Repeat if there are errors. Once done, type exit and reboot the computer.

If that doesn't work for you, we'll do it the old fashioned way...

• boot to a Ubuntu Live DVD/USB


• open a terminal window


• type sudo fdisk -l


• identify the /dev/XXXX device name for your "Linux Filesystem"


• type sudo fsck -f /dev/XXXX # replacing XXXX with the number you found earlier


• repeat the fsck command if there were errors



• type reboot

Update #1:

Turned out that the BIOS had reset the SATA controller to RAID. (thanks @GabrielaGarcia). We reset it back to AHCI, did a fsck to verify proper disk operation, and the system is working again.