Welcome to crosh, the Chrome OS developer shell.
chronos@localhost / $ lsblk
lsblk: dm-0: failed to get device path
NAME          MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sda             8:0    0 14.9G  0 disk
├─sda1          8:1    0 10.8G  0 part /mnt/stateful_partition
├─sda2          8:2    0   16M  0 part
├─sda3          8:3    0    2G  0 part
├─sda4          8:4    0   16M  0 part
├─sda5          8:5    0    2G  0 part /
├─sda6          8:6    0  512B  0 part
├─sda7          8:7    0  512B  0 part
├─sda8          8:8    0   16M  0 part
├─sda9          8:9    0  512B  0 part
├─sda10         8:10   0  512B  0 part
├─sda11         8:11   0    8M  0 part
└─sda12         8:12   0   16M  0 part
sdb             8:16   1 28.9G  0 disk
└─sdb1          8:17   1 28.9G  0 part
loop0           7:0    0  3.1G  0 loop
└─encstateful 254:1    0  3.1G  0 dm   /mnt/stateful_partition/encrypted
zram0         253:0    0  5.6G  0 disk [SWAP]
chronos@localhost / $




Welcome to crosh, the Chrome OS developer shell.

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Type 'help' for a list of commands.

crosh> shell
chronos@localhost / $ sudo fdisk -l /dev/sdb

Disk /dev/sdb: 28.9 GiB, 31009800192 bytes, 60566016 sectors
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: 0xf12f7589

Device     Boot Start      End  Sectors  Size Id Type
/dev/sdb1        2048 60566015 60563968 28.9G 83 Linux

chronos@localhost / $