=====Create GPT================================ Disk : 50 MiB, 52428800 bytes, 102400 sectors Disk model: scsi_debug Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / bytes >>> Created a new disklabel. 1: Created a new partition . 2: Done. New situation: Disklabel type: gpt Disk identifier: Device Start End Sectors Size Type 1 2048 100351 98304 48M Linux filesystem The partition table has been altered. Calling ioctl() to re-read partition table. Syncing disks. =====Create FS in partition================================ =====Wipe whole-disk device================================ =====Create GPT (again)================================ Disk : 50 MiB, 52428800 bytes, 102400 sectors Disk model: scsi_debug Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / bytes >>> Created a new disklabel. 1: Created a new partition . The signature will be removed by a write command. 2: Done. New situation: Disklabel type: gpt Disk identifier: Device Start End Sectors Size Type 1 2048 100351 98304 48M Linux filesystem Filesystem/RAID signature on partition 1 will be wiped. The partition table has been altered. Calling ioctl() to re-read partition table. Syncing disks. =====Check content (disk)================================ OFFSET TYPE 0x200 gpt 0x31ffe00 gpt 0x1fe PMBR =====Check content (partition)================================