I've successfully built LOS from source!: https://lisalist2.com/index.php/topic,644.0.html
Could a second ESProfile be used in a 2/10?
You can definitely have two (or up to seven) connected if you have enough parallel ports. The trick will be using something like Selector on 2-7 wouldn't be possible, since that's only brought up on the boot disk. Though, I suspect someone with some programming skills can probably write a Mac program to select a drive image on the others?
You should be able to boot from each drive in turn, S(elect the desired image from the Selector, and then quit the Selector and move onto the next drive until you've selected images for all of them. I had to do that recently when I ran out of space and had to transfer all my LOS compilation stuff from a 16MB to a 32MB Workshop volume!
I am not sure I follow. How does that allow me to have two volumes mounted to the desktop at the same time to copy between volumes(images) with only one ESProfile?
Oh sorry, I didn't know you wanted to do all this with just one ESProFile unit! Unfortunately that's not really possible; you've got to have one ESProFile for each drive that you want to have mounted. Sorry for misunderstanding!
Some off-topic questions: I was looking up ESProfile stuff on your GitHub, and you did an eclectic car project. Was it a full-size car?
Meanwhile, what's this about a 32 MB Workshop volume? I had assumed that it could only be 5 or 10 MB if it wasn't a Priam drive...
Please tell me this secret doesn't involve writing a Monitor/Workshop executable emulator that intercepts "syscalls"/traps in order to map them to standard POSIX functions, allowing the old tooling to be ran from a modern command line with full access to the local filesystem (ala https://github.com/ksherlock/mpw, https://github.com/eschaton/MINIXCompat, etc).