I have a running R5A22 system with no DVD/CD ROM drive (an old, slow system that can't handle DVD's). I'm running LVM (with the standard 'vg' volume group and 3 hard drives). There's a single PVR-350 in the box. Everything is working fine on the box now. I'm trying to upgrade to R5B7

Is there a way to upgrade this without the CD/DVD drive?

I searched the forum and found 22 threads when searching "upgrade no cdrom" but didn't see any of those threads that covered my question.

Is it possible? Or do I need to scrounge up a CD to install in it.

I havn't found a way yet. I'd be intrested if you did. I have a usb/firewire dvd-rom drive I use to install/upgrade on my box.

If you have another knoppmyth box on the network, you can run prep-ts to setup the terminal server on that machine and then boot the other machine off the network, and it is just like installing from the cd.

Since I can map the Myth drive in windows can I do the opposite? Is it possible to use the CD-ROM on my windows box and have Myth use that as a network drive somehow?

That is a good idea. I could run a vurtual machine on my other computer with the install cd setup for network booting.

Yes you can map a windows share onto your mythbox. But you can't boot off of it, which is required to run the install/upgrade. To boot over the network you need to have another knoppmyth/linux machine to host the boot image like Greg Frost suggested.

I've been wondering if there isn't someway to dump the ISO onto a big enough USB key and boot from that myself... It seems like it ought to be possible... Essentially treat the device as a really big boot floppy...

That's considering your computer is new enough to actually boot from USB. In my case, that's not possible. (Pentium 2-450MHz - old Compaq Deskpro)

I guess it's time to break it open and put that CD-ROM drive back in.