Can't boot anymore with Ubuntu Mate

Question

I am new to the Ubuntu community and have a big problem: I cannot boot anymore after I made a terminal command.

I don't know what happened, but suddenly all the files in my Downloads folder got locked (with the lock icon) and I couldn't delete them anymore.

So I wrote a terminal command I found to unlock the folders (which I forgot) to set the permissions on my Home folder (which removed the lock icon after execution), but I still couldn't delete them.

When I rebooted, Ubuntu Mate did not reboot. I got errors messages like:

Error communicating to TPM chip ACPI BIOS error AE_AML PACKAGE LIMIT 

The BusyBox (initramfs) is waiting for a manual command, but I don't know what to do.

I would really appreciate support, if you know what's going on and why Ubuntu doesn't boot anymore.

Answer 1

"suddenly all the files in my Download folder got locked" suggests filesystem corruption or a faulty/dying hard drive.

• First, try to use the fsck command to repair your filesystem

• If your filesystem can be repaired, then backing up your data to some other media is wise, in case the problem re-occurs.

• If your filesystem can be repaired, but the problem re-occurs after another few boots, then run a SMART test on your storage device (HDD/SSD)