Error mounting system-managed device

[bryanbocao]

When I rebooted my desktop and plugged in my external drive, got this error when I tried to access the hard drive:

[bryanbocao]

lsblk

shows that the system detected the hard drive device (sde):

NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
loop0    7:0    0     4K  1 loop /snap/bare/5
loop1    7:1    0  55.7M  1 loop /snap/core18/2790
loop2    7:2    0  73.9M  1 loop /snap/core22/864
loop3    7:3    0  12.3M  1 loop /snap/snap-store/959
loop4    7:4    0 496.9M  1 loop /snap/gnome-42-2204/132
loop5    7:5    0   497M  1 loop /snap/gnome-42-2204/141
loop6    7:6    0  40.9M  1 loop /snap/snapd/19993
loop7    7:7    0 218.4M  1 loop /snap/gnome-3-34-1804/93
loop8    7:8    0 240.8M  1 loop /snap/gnome-3-34-1804/24
loop9    7:9    0  62.1M  1 loop /snap/gtk-common-themes/1506
loop10   7:10   0  40.9M  1 loop /snap/snapd/20092
loop11   7:11   0  91.7M  1 loop /snap/gtk-common-themes/1535
loop12   7:12   0  73.9M  1 loop /snap/core22/858
loop13   7:13   0  49.8M  1 loop /snap/snap-store/433
loop14   7:14   0  55.7M  1 loop /snap/core18/2785
sda      8:0    0 931.5G  0 disk 
├─sda1   8:1    0   512M  0 part /boot/efi
└─sda2   8:2    0   931G  0 part /
sdb      8:16   0   1.8T  0 disk /aw2data
sdc      8:32   0   1.8T  0 disk /media/brcao/eData2
sde      8:64   0  14.6T  0 disk 
├─sde1   8:65   0   300M  0 part 
└─sde2   8:66   0  14.6T  0 part 
sr0     11:0    1  1024M  0 rom  

[bryanbocao]

sudo vim /etc/fstab

shows that

/dev/sde2       /media/brcao/SG ext4    defaults        0 0

is already noted.

[bryanbocao]

Attempted

sudo mkfs.ext4 /dev/sde2

but it shows

mke2fs 1.45.5 (07-Jan-2020)
/dev/sde2 contains a vfat file system labelled 'Data16TB'
Proceed anyway? (y,N)

Not sure if it will format the drive and all data might be lost! So I did not proceed.

[bryanbocao]

sudo mount /dev/sde2 /media/brcao/SG

solved.