NTFSの外付けHDDをext4にフォーマットしたい
$ brew install e2fsprogs
初期化先を確認
$ diskutil list
$ sudo (brew --prefix e2fsprogs)/sbin/mkfs.ext4 /dev/disk9
mke2fs 1.47.0 (5-Feb-2023)
/dev/disk9: Resource busy while setting up superblock
怒られたのでumount
$ diskutil unmountDisk disk9
retry
$ sudo (brew --prefix e2fsprogs)/sbin/mkfs.ext4 /dev/disk9
mke2fs 1.47.0 (5-Feb-2023)
Creating filesystem with 732566644 4k blocks and 183148544 inodes
Filesystem UUID: a6274620-735f-44b0-83bb-d3f5d5f43d50
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,
102400000, 214990848, 512000000, 550731776, 644972544
Allocating group tables: done
Writing inode tables: done
Creating journal (262144 blocks): done
Writing superblocks and filesystem accounting information: done
以上