Disk /dev/sda: 465.76 GiB, 500107862016 bytes, 976773168 sectors Disk model: Samsung SSD 850 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 2048 1050623 1048576 512M EFI System /dev/sda2 1050624 959993855 958943232 457.3G Linux extended boot /dev/sda3 976771072 976773119 2048 1M BIOS boot /dev/sda4 959993856 976771071 16777216 8G Linux swap Partition table entries are not in disk order.