before we go further, did you use your m.2 disk anywhere else ? (is it new ?)
let's try few more com ...
chancho 發表於 2021-2-17 09:04 
1) sudo parted -l
Model: ATA PLEXTOR PX-256M5 (scsi)
Disk /dev/sda: 256GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:
Number Start End Size File system Name Flags
1 1049kB 106MB 105MB fat32 EFI system partition boot, esp
2 106MB 123MB 16.8MB Microsoft reserved partition msftres
3 123MB 109GB 109GB ntfs Basic data partition msftdata
4 109GB 109GB 582MB ntfs hidden, diag
5 109GB 110GB 349MB fat16 EFI System Partition boot, esp
6 110GB 110GB 839MB ext4
7 110GB 118GB 8000MB linux-swap(v1) swap
8 118GB 256GB 138GB btrfs
Model: ATA HGST HTS721010A9 (scsi)
Disk /dev/sdb: 1000GB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt
Disk Flags:
Number Start End Size File system Name Flags
1 1049kB 371GB 371GB ntfs Basic data partition msftdata
2 371GB 1000GB 629GB ext4
Model: Unknown (unknown)
Disk /dev/zram0: 4097MB
Sector size (logical/physical): 4096B/4096B
Partition Table: loop
Disk Flags:
Number Start End Size File system Flags
1 0.00B 4097MB 4097MB linux-swap(v1)
2) sudo smartctl -a /dev/sdc
sudo: smartctl: command not found
3) sudo dmesg | grep sdc
[ 3631.579855] sd 6:0:0:0: [sdc] Attached SCSI removable disk |