Reference for Solaris 10: here.
No real solution actually, I’m still trying. /var/adm/messages displays the PCI-ID, which I found as symlink in /dev/rdsk. Assuming that the actual partition would be slice0, f.e. /dev/dsk/c4t0d0s0 should be mountable.
I don’t get it managed to format an USB disk under solaris. I can create a UFS drive under Linux, but I don’t get it to create a suitable Sun disklabel. Solaris, btw, doesn’t seem to remove automatically added device nodes. ‘devfsadm -vC’ rescans the system and removes unused disk device nodes (source).
However, I will connect the USB disk formatted with ext3 on my Linux box and mount it via NFS. The ‘dd’ image has to travel through the network anyway.