这块硬盘一开始是内置的，linear模式，后来我拿出来装usb硬盘盒里，插上不识别。ssh下挂载报mount: /mnt/data: wrong fs type, bad option, bad superblock on /dev/sdg, missing codepage or helper program, or other error.
dmesg(1) may have more information after failed mount system call.
这个pttype显示pmbr
