BusyBox v1.30.1 (Ubuntu 1:1.30.1-4ubuntu6.1) built-in shell (ash) Enter 'help' for a list of built-in commands.
To repair the filesystem in the corrupted partition using fsck command like below:
(initramfs) fsck /dev/sdaX -y
sudo apt –fix-missing update (reparar)
sudo apt update
sudo apt install -f
sudo lshw
sudo update-initramfs -u -k all
sudo update-initramfs -c -k all (finalmente use este )
sudo update-grub
Options:
-k version Specify kernel version or ‘all’
-c Create a new initramfs
-u Update an existing initramfs
-d Remove an existing initramfs
-b directory Set alternate boot directory
-v Be verbose