Ubuntu 24.04 dual boot win11 initramfs error

Question

So, I recently got a Lenovo Ideapad Slim 3 that came with Windows 11. I decided to make it dual boot with Ubuntu 24.04. Install seemed to work ok, but when the grub window appears and I select Ubuntu, I get this:

BusyBox v1.36.1 (Ubuntu 1:1.36.1-6ubuntu3.1) built-in shell (ash)
(initramfs)

I type 'exit' and get this:

Gave up waiting for root file system device. Common problems:
- Boot args (cat /proc/cmdline)
--Check rootdelay= (did the system wait long enough?)
-Missing modules (cat /proc/modules: ls /dev)
ALERT! UUID=e5d4b1c7-b00a-41bc-8903-e9693c289d1c does not exist

I gather somehow the system cannot find a crucial partition, but I cannot find how to fix it. Upon searching some people seem to have similar problems, but no solutions have worked as yet.

Things tried:

• Reinstalling Ubuntu
• Turned off secure boot in UEFI. Returned the possibility to run memtest from grub boot.
• David's suggestion from UUID=xxx does not exist. Dropping to a shell on standard (no dual boot) on Lenovo Idea Pad 3
• Listing the partitions at grub command line shows everything fine as far as I can see.
• Running boot-repair twice. "Successful" both times. Last report here: https://paste.ubuntu.com/p/2FJt3HV56f

I would drop the dual boot and just run Ubuntu, but I have a suspicion I'd face the same issue. If you need more info just ask and I'll provide.

Answer 1

I tried a lot of other things that didn't work, but here is what did as formulated by chatgpt linux server expert who helped me narrow down the problem and adress it:

1. Rebuild the Initramfs with UFS Modules The most likely cause of the (initramfs) drop is that the ufshcd_pci module is missing or not being loaded early enough during the boot process. Step 1: Ensure ufshcd_pci is Included in Initramfs
   1. Boot into the live USB and mount your root partition:

       sudo mount /dev/sdb5 /mnt
       sudo mount --bind /dev /mnt/dev
       sudo mount --bind /proc /mnt/proc
       sudo mount --bind /sys /mnt/sys
       sudo chroot /mnt ```

Open the initramfs-tools module configuration file:

   nano /etc/initramfs-tools/modules ```

3. Add the following lines to ensure the UFS modules are included:

       ufshcd_core
       ufshcd_pci ```
   This forces the initramfs to include these modules during boot.



Rebuild the initramfs:

   update-initramfs -u -k all ```

5. Exit the chroot:

       exit
       sudo umount /mnt/dev
       sudo umount /mnt/proc
       sudo umount /mnt/sys
       sudo umount /mnt" ```
Hope that helps the next person.

Answer moved from OP's quesiton.