For everyone interrested:

I've an original CDROM from Sun Microsystems SunOS 4.1.1.ul.
It says that the format is in UFS.
But with issueing the command:

sunny:~#>mount -r -tufs /dev/cd0a /cdrom

it generates: bad or wrong superblock

What did I forgot, or is NetBSD not able to read the SunOS filesystem?

Greetings,

Nick Brok
--
Embedded controller coordinator HCC 68000 GG and student Computer
Engineering.
Tel. +31-40-2528917                          Berliozlaan 1
		                             5654 SM Eindhoven
Email: nick@stack.nl                         The Netherlands