A few years ago,I bought a netra t1 sever,(2007)headless,no video only com port,and ethernet.The problem with netra t1 server was the mac address is kept in the first gigabyte of the drive,and the reseller,maybe us military,wiped the complete drive including the Mac and boot partition!
I found out by accident that a used computer company in North Carolina,USA,was selling old US military servers,and they are wiped before they get them,by the military.
There was no way to get in without a mac ADDRESS!
WELL one day I was at a scrap yard and spotted an old Sgi server,with six scsi drive bays,3 scsi drives.
But someone deleted the root file system on the Irix server.
Well getting to the point:my 10 gig ibm drive out of my netra t1 server was the same pin config as the sgi!
I found if I unplugged the harddrive backplane in the sgi server,I could connect my asus server via scsi ribbon connector,and format and install freebsd to the netra drive!
I put that drive in netra t1,booted it,couldn't login,so I put back in the sgi s drive bay and read the message.
It said:wrong os,gee it read it but wouldn't boot freebsd.
Well you can get in if you have the right hardware,I did!