Disk /dev/sda: 931.53 GiB, 1000204886016 bytes, 1953525168 sectors Disk model: WDC WD10EZEX-21M 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: gpt Disk identifier: -- Device Start End Sectors Size Type /dev/sda1 2048 524287 522240 255M EFI System /dev/sda2 524288 42467327 41943040 20G Linux filesystem /dev/sda3 42467328 50659327 8192000 3.9G Linux filesystem /dev/sda4 50659328 1953523711 1902864384 907.4G Linux filesystem Disk /dev/sdc: 28.93 GiB, 31042043904 bytes, 60628992 sectors Disk model: USB DISK 2.0 Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 1048576 bytes Disklabel type: dos Disk identifier: -- Device Boot Start End Sectors Size Id Type /dev/sdc1 1948285285 3650263507 1701978223 811.6G 6e unknown /dev/sdc2 0 0 0 0B 74 unknown /dev/sdc4 28049408 28049848 441 220.5K 0 Empty Partition table entries are not in disk order.