UFS label containing an underscore?

[jem]

Howdy.

In the -memstick installation image, there is a single BSD partition containing a UFS filesystem. That filesystem has a UFS label of "FreeBSD_Install".

root@atom:/root # gpart show md0
=>      0  1501808  md0  BSD  (733M)
        0  1501808    1  freebsd-ufs  (733M)

root@atom:/root # dumpfs /dev/md0a | grep volname
volname FreeBSD_Install swuid   0

I'd like to use the underscore character in the UFS label of a filesystem I'm creating, but neither newfs or tunefs will allow it.

Does anyone know how this can be done?

 

[wblock@]

Programmatically, probably. makefs(8) is probably what is being used for the install image. Consider that two separate tools refusing to do it is a strong warning about the wisdom of the idea.