Ok try save the active situation through the utility Disk what is included with gnome by default. And for every partition pick in the gear to edit montage options and you need see than the option mount at system startup is active.
Look this pictures (sorry for Swedish language)
And after you can check your fstab file. the one mine looks like it (the sda disk is a disk that i did select to mount in the start but that is not related with the system to avoid confusion)
[jorge@f31 ~]$ sudo cat /etc/fstab
[sudo] lösenord för jorge:
# Created by anaconda on Tue Nov 26 15:22:09 2019
# Accessible filesystems, by reference, are maintained under '/dev/disk/'.
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info.
# After editing this file, run 'systemctl daemon-reload' to update systemd
# units generated from this file.
/dev/mapper/fedora_localhost--live-root / ext4 defaults 1 1
UUID=eb889234-bb74-4cdc-a4f2-5e9e077b1e18 /boot ext4 defaults 1 2
UUID=3632-7517 /boot/efi vfat umask=0077,shortname=winnt 0 2
/dev/mapper/fedora_localhost--live-home /home ext4 defaults 1 2
/dev/mapper/fedora_localhost--live-swap none swap defaults 0 0
/dev/disk/by-uuid/2f2f56a3-c161-4004-91b6-fb9f6c40022f /mnt/2f2f56a3-c161-4004-91b6-fb9f6c40022f auto nosuid,nodev,nofail,x-gvfs-show 0 0
[jorge@f31 ~]$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 223,6G 0 disk
└─sda1 8:1 0 223,6G 0 part /mnt/2f2f56a3-c161-4004-91b6-fb9f6c40022f
sdb 8:16 0 232,9G 0 disk
├─sdb1 8:17 0 600M 0 part /boot/efi
├─sdb2 8:18 0 1G 0 part /boot
└─sdb3 8:19 0 231,3G 0 part
├─fedora_localhost--live-root 253:0 0 70G 0 lvm /
├─fedora_localhost--live-swap 253:1 0 7,9G 0 lvm [SWAP]
└─fedora_localhost--live-home 253:2 0 153,4G 0 lvm /home
more About how fstab work can be find with the command
man fstab or here
Edit: If you did check and all is ok… look this link where another guy had a same issue with CentOS but the way should be similar.
Notes at the link above:
I hope it can help you… like said before : I never did test it by myself because never did run into the issue so always backup thing in case of doubt