[issue782] missleading error message on mountroot prompt

[Matthew Dillon]

:Nicolas Thery wrote:
:> Here is a patch that displays a hopefully more informative message when
:> kgetdiskbyname() fails and changes mountroot '?' to list only disk devices.
:
:Thanks, looks good!  I'll leave it to you to commit :)
:
:Not tested, however.
:
:cheers
:  simon

    I've tested it with boot -a and it works well, I am committing it.

						-Matt