> if you were to bottom post rather than top post, it would be easier. I thought it was protocol to top post? > on Linux... > > sha1sum *iso --check SHA1SUM Okay so really naïve question... If I have not installed linux yet because I haven't booted the disks, and I haven't booted the disks because I haven't used SHA1SUM to verify that they are valid, how can I use linux to run SHA1SUM? From a terminal shell? -- Adam Boettiger NOTE: I value your time. If it is faster and easier for you to reply to this message by phone, please call my voicemail toll-free at (800) 205-1167. If you need to reach me today, please call my mobile listed below. Thank you. boettiger@xxxxxxxxx (971) 222-6385 mobile (240) 337-2553 fax Portland, Oregon USA