swcopy/swpackage auto-bootable?

[Steve Lewis]

I am practicing a 10.01-10.20 upgrade and first need to downgrade/install from the original 10.01 media. But it doesn't appear to like the DVD-ROM and refuses to install. So I thought I might copy the installation media to tape and try that way.
Does anyone know a way of transferring the core-OS onto tape and making it auto-bootable from ISL prompt? I know that ignite will do this but I need a source system to ignite from in the first place (catch-22) and I couldn't see a switch in the swcopy/swpackage man pages. Do I first have to use mkboot/mkmedialif or something before using swpackage/swcopy?
I doubt if I could just dd the CD to a tape.
Any ideas?

[Antonio Valle_1 · Accepted solution]

I think that you are not going to succeed with this kind of copy. In order to make a tape bootable you need to use the mkboot command, and this command needs both the character and block device.

If you run the lsdev command, you will see that the tape driver does not support block devices, so you don't have the block device file for the tape.

Regards.
Antonio