Disk /dev/sda: 931.53 GiB, 1000204886016 bytes, 1953525168 sectors Disk model: WDC WDS100T2B0A 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: gpt Disk identifier: -- Device Start End Sectors Size Type /dev/sda1 10240 1001471 991232 484M EFI System /dev/sda2 1001472 1034239 32768 16M Microsoft reserved /dev/sda3 1034240 1685086207 1684051968 803G Microsoft basic data /dev/sda4 1685086208 1953523711 268437504 128G Linux filesystem