[Software] Mission Center shows 100% disk activity on drive not even mounted

[StevenFriedrich]

I have a Dell Inspiron 3668 that multi-boots Linux Mint, KDE Neon, debian12, Mint MATE, Mint Xfce, and win10.
I have a 2 TB WD Metal USB HDD with four partitions. Two partitions are not used, and two partitions are a raid 1 mirror.
The raid 1 is /dev/vg1/lv1.
The RAID is not even mounted and Mission Center shows 100% disk activity. I don't know why.
Here's the lsblk info:

Code: Select all

lsblk
NAME                 MAJ:MIN RM   SIZE RO TYPE MOUNTPOINTS
sda                    8:0    0 931.5G  0 disk 
├─sda1                 8:1    0   500M  0 part /boot/efi
├─sda2                 8:2    0   128M  0 part 
├─sda3                 8:3    0 913.8G  0 part 
├─sda4                 8:4    0   1.1G  0 part 
├─sda5                 8:5    0    15G  0 part 
└─sda6                 8:6    0   1.1G  0 part 
sdb                    8:16   0   3.6T  0 disk 
├─sdb1                 8:17   0   500G  0 part 
├─sdb2                 8:18   0 465.7G  0 part 
├─sdb3                 8:19   0   500G  0 part /
├─sdb4                 8:20   0 238.4G  0 part 
├─sdb5                 8:21   0 238.4G  0 part 
├─sdb6                 8:22   0  98.3G  0 part 
└─sdb7                 8:23   0 238.4G  0 part 
sdc                    8:32   0   1.8T  0 disk 
├─sdc1                 8:33   0 465.7G  0 part 
│ ├─vg1-lv1_rmeta_0  253:0    0     4M  0 lvm  
│ │ └─vg1-lv1        253:4    0   465G  0 lvm  
│ └─vg1-lv1_rimage_0 253:1    0   465G  0 lvm  
│   └─vg1-lv1        253:4    0   465G  0 lvm  
├─sdc2                 8:34   0 465.7G  0 part 
│ ├─vg1-lv1_rmeta_1  253:2    0     4M  0 lvm  
│ │ └─vg1-lv1        253:4    0   465G  0 lvm  
│ └─vg1-lv1_rimage_1 253:3    0   465G  0 lvm  
│   └─vg1-lv1        253:4    0   465G  0 lvm  
├─sdc3                 8:35   0 465.7G  0 part 
└─sdc4                 8:36   0   466G  0 part 
sr0                   11:0    1  1024M  0 rom  

When running KDE Neon, I have a Hard Disk Activity widget that shows sporadic disk activity, nowhere near 100%.
What is wrong with Mission Center?