If you want to use puppy linux 32 or 64 bit the following process will work If your system has 4 GB or less of ram use the 32 bit version, if it has than 4GB or more, use the 64 bit version.

I use puppy linux with boinc, you can get it either 32 or 64 bit. Burn an "live " { bootable }image to a thumb drive, then boot the system up on that drive.

When it starts set the time zone and use the "Ethoi" internet connection.
After the install is done, go to the menu ( bottom left ) then to the "puppy package manager " Search for "boinc" and choose the package that you want { there are multiples like for the seti project, ect. } you want the one that says boince manager and doesn't mention any particular project.

Tell it to install and follow the prompts using the defaults.

Then menu-boinc manager

When it opens scroll down through the projects and select World Community Grid. Again follow the prompts, log in/create an account at World community Grid.

When you are completely done, go to menu - shut down.
As the system is shutting down it will ask if you want to save changes?

Tell it yes and let it save everything.
When you start up the system next, everything will be ready to run.

Note: the startup + boinc can all be put on a cd/dvd as well, but you will still need a thumb drive to hold the temporary files the projects create when running. I use a 16gb NVME drive i picked up online pretty cheap.

Both versions of Puppy are very small and can run completely in ram, making it a very fast operating system. You can also use it in newer and larger systems as I run Puppy 64 in my dedicated cruncher which is an 8 core Lenovo tower.