Join particles

Is there a way to join particles? I made a model when I was a noob and I used 7 different particles for his hair. It looks perfect, but for some reason “Bake All Dynamics” doesn’t work on my computer, so I have to go through all 7 and bake them individually to add dynamics. I tried more than once to make a 1 that is comprised of all of them, but it just doesn’t look nearly as perfect. Is there a way to join all 7 particle groups into one?

And you don’t wanna convert it to mesh ??

Can I convert it back to particles? Or, can I still use hair physics if I convert it to mesh?

No, sorry. The question was more something like if you just modelled the hair with particles and do any physics on the final mesh then you could…