Fsck with recovery mode

[geole0]

Hello
Today, to please myself, I decided to boot in recovery mode.
A nice grid of choices is displayed.

I choose the fourth line titled:
fsck check all filesystems

The following warning message is displayed:
Continuing will remount your filesystem / in read/write mode and mount all other filesystems defined in /etc/fstab
Would you like to continue?
Yes No

I choose Yes which is prepositioned and disaster strikes

/lib/recovery/recovery/menu: line 80: /etc/default/rcS: No such file or folder
fsck from util-linux 2.34
/dev/sda20 is mounted
e2fsck; cannot continue, stop immediately.

Done, Please press Enter

I ask you to clarify if the control of this root partition should be done or not and to do the necessary so that despite a crash, the control can continue for all the other partitions described in the fstab file.

I am not sure NTFS formatted partitions are checked. If they are not, the title should probably be changed.
"fsck only check filesystems formatted as EXTn"

Note UBUNTU 20.04.1 and /dev/sda20 is the root partition.
Thank you.

[geole0 (geole0)]

Remenber

ubuntu@ubuntu:~$ Temp=$(diskutil list | grep -i '0FC63DAF-8483-4772-8E79-3D69D8477DE4\|BC13C2FF-59E6-4262-A352-B275FD6F7172\|933AC7E1-2EB4-4F13-B844-0E14E2AEF915\|E6D6D379-F507-44C2-A23C-238F2A3DF928\|A19D880F-05FC-4D3B-A006-743F0F84911E\|0657FD6D-A4AB-43C4-84E5-0933C84B4F4F\|Linux')
diskutil : commande introuvable
ubuntu@ubuntu:~$ diskutil
diskutil : commande introuvable
ubuntu@ubuntu:~$

ubuntu@ubuntu:~$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=21.04
DISTRIB_CODENAME=hirsute
DISTRIB_DESCRIPTION="Ubuntu Hirsute Hippo (development branch)"
ubuntu@ubuntu:~$