Disk /dev/sdb: 223.57 GiB, 240057409536 bytes, 468862128 sectors Disk model: SanDisk SSD PLUS 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: dos Disk identifier: -- Device Boot Start End Sectors Size Id Type /dev/sdb1 * 2048 463740927 463738880 221.1G 83 Linux 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: ST3500413AS 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 976568319 976566272 465.7G Linux filesystem Disk /dev/mapper/XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 221.13 GiB, 237432209408 bytes, 463734784 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes