# sha256sum -c Armbian_23.11.1_Espressobin_bookworm_current_5.15.139.img.xz.sha
Armbian_23.11.1_Espressobin_bookworm_current_5.15.139.img.xz: OK
# sfdisk -l /dev/sdb
Disk /dev/sdb: 3.76 GiB, 4041211904 bytes, 7892992 sectors
Disk model: USB Flash Drive
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x02b549d0
Device Boot Start End Sectors Size Id Type
/dev/sdb1 8192 4046847 4038656 1.9G 83 Linux
# mount /dev/sdb1 /mnt/sdb1/
mount: /mnt/sdb1: wrong fs type, bad option, bad superblock on /dev/sdb1, missing codepage or helper program, or other error.