Vaxstation 4000/60 Prom help please

Hi! I've had trouble with hard disks and my vaxstation 4000/60. It won't take some drives but will run my two Quantum scsi drives. I was thinking this might be that the drives are formatted for the wrong sector size? If this is a reasonable theory then I'd like to know how to low-level scsi drives on the vax. I found some info on the vaxstation 3100 which refers to "test 75" contained in the prom but no info on my machine's prom to speak of. Is there a manual anywhere on the web which documents the vaxstation 4000/60's prom? Thanks, Jeff -- ----------------------------------------------------------- Jeffrey S. Worley President Complete Computer Services, Inc. 30 Greenwood Rd. Asheville, NC 28803 828-277-5959 Visit our website at HTTP://www.Real-Techs.com THETechnoid(a)home.com -----------------------------------------------------------