Boy, am I glad to have found this thread. I did an upgrade from 24.04.2.3 to 24.10.0.1 via GUI, and everything worked OK, incl. application migration. Then, I wanted to make a clean install from *.iso. And that’s about that. No boot… This disk wiping of the installer is absolutely not working (also mirrored drives here, in case this matters). Nothing would install anymore, even several 24.04.x *.iso installers would not generate a bootable system.
Only after using @apple4ever 's solution (thanks 
) could I install successfully and also boot afterwards…
Hoping, this gets fixed or made more resilient in future versions…
You are welcome! Glad I could help out and you got it working.
It does sound like they have a fix for this, so at least for future installs on newer versions it will work .
There might be a bug fix scheduled for 24.10.1 concerning the “keyerror pool_name not found”. The problem appears when there is a pool named ‘disks’
I just wiped anotyher boot drive and rebooted from a usb stick with 24.10.02 then reloaded the saved configureation file. Sadly I got the same pool_name KeyError so perhaps it wasnt my boot drive! This is very frustrating as it stops any further disk configurations.
My only next safe thing to try is copying off everything on the mirrored pair of ssds and wipe those and copy back. 
wow I followed a way to rename a pool from “disks” to something else (scary) and now its fixed! Thanks @dukhat2259
