Disk /dev/sda: 465.78 GiB, 500107861504 bytes, 976773167 sectors Disk model: Expansion Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 1048576 bytes Disklabel type: dos Disk identifier: -- Device Boot Start End Sectors Size Id Type /dev/sda1 * 2048 41943039 41940992 20G 83 Linux /dev/sda2 41943040 976766975 934823936 445.8G 5 Extended /dev/sda5 41945088 50135039 8189952 3.9G 82 Linux swap / Solaris /dev/sda6 50137088 976766975 926629888 441.9G 83 Linux Disk /dev/sdb: 465.78 GiB, 500107862016 bytes, 976773168 sectors Disk model: HGST HTS545050A7 Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 1048576 bytes Disklabel type: dos Disk identifier: -- Device Boot Start End Sectors Size Id Type /dev/sdb1 2048 206847 204800 100M 7 HPFS/NTFS/exFAT /dev/sdb2 206848 211705855 211499008 100.9G 7 HPFS/NTFS/exFAT /dev/sdb3 211705856 874368064 662662209 316G 7 HPFS/NTFS/exFAT /dev/sdb4 874369022 976771071 102402050 48.8G 5 Extended /dev/sdb5 * 874369024 972810239 98441216 47G 83 Linux /dev/sdb6 972812288 976771071 3958784 1.9G 82 Linux swap / Solaris Partition 4 does not start on physical sector boundary.