The backup GPT table is corrupt, but the primary appears OK, so that will be used. Disk /dev/sda: 465.76 GiB, 500107862016 bytes, 976773168 sectors Disk model: ST500DM002-1BD14 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 958318163 958316116 457G EFI System /dev/sda2 958318164 976773101 18454938 8.8G Linux swap Partition 2 does not start on physical sector boundary. Disk /dev/zram0: 3.86 GiB, 4148166656 bytes, 1012736 sectors Units: sectors of 1 * 4096 = 4096 bytes Sector size (logical/physical): 4096 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes