sudo fdisk -l /dev/sdb

Disk /dev/sdb: 931.5 GiB, 1000204885504 bytes, 1953525167 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 33553920 bytes
Disklabel type: dos
Disk identifier: 0x861d4f68

Device     Boot      Start        End    Sectors   Size Id Type
/dev/sdb1  *            63 1936973114 1936973052 923.6G 83 Linux
/dev/sdb2       1936973115 1953520064   16546950   7.9G  5 Extended
/dev/sdb5       1936973178 1953520064   16546887   7.9G 82 Linux swap / Solaris

Partition 2 does not start on physical sector boundary.

Partition 3 does not start on physical sector boundary.

Partition 6 does not start on physical sector boundary.