GPT PMBR size mismatch (3563204607 != 3750748847) will be corrected by write. The backup GPT table is not on the end of the device. Disk /dev/sda: 1.75 TiB, 1920383410176 bytes, 3750748848 sectors Disk model: INTEL SSDSC2KB01 Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disklabel type: gpt Disk identifier: -- Device Start End Sectors Size Type /dev/sda1 2048 3907583 3905536 1.9G EFI System /dev/sda2 3907584 7813119 3905536 1.9G Linux filesystem /dev/sda3 7813120 984375295 976562176 465.7G Linux filesystem /dev/sda4 984375296 1960937471 976562176 465.7G Linux filesystem /dev/sda5 1960937472 1976561663 15624192 7.5G Linux swap /dev/sda6 1976561664 3563202559 1586640896 756.6G Linux filesystem GPT PMBR size mismatch (3563204607 != 3750748847) will be corrected by write. The backup GPT table is not on the end of the device. Disk /dev/sdb: 1.75 TiB, 1920383410176 bytes, 3750748848 sectors Disk model: INTEL SSDSC2KB01 Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disklabel type: gpt Disk identifier: -- Device Start End Sectors Size Type /dev/sdb1 2048 3907583 3905536 1.9G EFI System /dev/sdb2 3907584 7813119 3905536 1.9G Linux filesystem /dev/sdb3 7813120 984375295 976562176 465.7G Linux filesystem /dev/sdb4 984375296 1960937471 976562176 465.7G Linux filesystem /dev/sdb5 1960937472 1976561663 15624192 7.5G Linux swap /dev/sdb6 1976561664 3563202559 1586640896 756.6G Linux filesystem Disk /dev/md126: 1.66 TiB, 1824360759296 bytes, 3563204608 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disklabel type: gpt Disk identifier: -- Device Start End Sectors Size Type /dev/md126p1 2048 3907583 3905536 1.9G EFI System /dev/md126p2 3907584 7813119 3905536 1.9G Linux filesystem /dev/md126p3 7813120 984375295 976562176 465.7G Linux filesystem /dev/md126p4 984375296 1960937471 976562176 465.7G Linux filesystem /dev/md126p5 1960937472 1976561663 15624192 7.5G Linux swap /dev/md126p6 1976561664 3563202559 1586640896 756.6G Linux filesystem