윈도우용 ntfs 하드디스크를 리눅스용 ext4로 포멧하기 # fdisk -l Command (m for help): m ~# fdisk /dev/sdb Command (m for help): d Partition number (1-4, default 4): 4    Partition 4 has been deleted. Command (m for help): d Partition number (1-3, default 3):    Partition 3 has been deleted. Command (m for help): d Partition number (1,2, default 2): 2   Partition 2 has been deleted. Command (m for help): d Selected partition 1 Partition 1 has been deleted. Command (m for help): n Partition number (1-128, default 1): First sector (34-1953525134, default 2048): Last sector, +sectors or +size{K,M,G,T,P} (2048-1953525134, default 1953525134): Created a new partition 1 of type Linux filesystem and of size 931.5 GiB. Partition #1 contains a ntfs signature. Do you want to remove the signature? [Y]es/[N]o: Y The signature will be removed by a write command. Command (m for help): n Partition number (2-128, default 2): First sector (34-2047): 34 Last sector, +sectors or +size{K,M,G,T,P} (34-2047, default 2047): Created a new partition 2 of type Linux filesystem and of size 1007 KiB. Command (m for help): n Partition number (3-128, default 3): No free sectors available. Command (m for help): w The partition table has been altered. Calling ioctl() to re-read partition table. Syncing disks. # fdisk -l # mkfs.ext4 /dev/sdb1 root@s1800:~# fdisk -l /dev/sdb Disk /dev/sdb: 931.5 GiB, 1000204886016 bytes, 1953525168 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: 847F7D3F-9AAB-441A-8EC0-B888DD38A649 Device     Start        End    Sectors   Size Type /dev/sdb1   2048 1953525134 1953523087 931.5G Linux filesystem /dev/sdb2     34       2047       2014  1007K Linux filesystem