atmark@atde9:~/Downloads$ lsblk
NAME                 MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sda                    8:0    0   32G  0 disk 
├─sda1                 8:1    0  487M  0 part /boot
├─sda2                 8:2    0    1K  0 part 
└─sda5                 8:5    0 31.5G  0 part 
  ├─atde9--vg-root   254:0    0 94.5G  0 lvm  /
  └─atde9--vg-swap_1 254:1    0  976M  0 lvm  [SWAP]
sdb                    8:16   0   64G  0 disk 
└─atde9--vg-root     254:0    0 94.5G  0 lvm  /
sdc                    8:32   1 14.9G  0 disk 
└─sdc1                 8:33   1  394M  0 part 
sr0                   11:0    1 1024M  0 rom  
atmark@atde9:~/Downloads$ sudo dd if=baseos-600-installer-3.21.3-at.1-console-uart3.img of=/dev/sdc bs=1M oflag=direct status=progress
412090368 bytes (412 MB, 393 MiB) copied, 26 s, 15.8 MB/s
405+0 レコード入力
405+0 レコード出力
424673280 bytes (425 MB, 405 MiB) copied, 26.9713 s, 15.7 MB/s
atmark@atde9:~/Downloads$ sync