If you’re trying to install Solaris (SPARC) on a disc which previously had another O/S (*BSD) on it, you will more then likely come across the following error after the system identification stage is complete:
One or more disks are found, but one of the following problems exists:
> Hardware failure > Unformatted disk.The problem is to do with the disc label, at the shell fireup format with the e switch
format -eselect the disc which you are trying to install onto, if you are told that the disc doesnt not contain a disk label, would you like to write a lablel, say yes & specify the type as SMI Label, If youre not asked about the label & presented with a menu, goto the partition section, choose label, specify the type as SMI.
quit & reboot & all should be well 
