Windows install broke OSX

Apologies as I know this is fairly common but I’m in a mad rush and can’t think what to search

I’ve been running El Capitan since 2016 with no issues until last week I decided to replace my windows 7 drive with a new one and install win 10

I unplugged all drives while installing 10 in the hopes it would do no damage as I remember reading how windows can do this kind of stuff. This didn’t save me however as I can load clover just fine and when I boot my OSX drive, the loading bar gets about 10%, crashes and priorities windows instead

It seems I’ve lost my clover boot USB, what do I need to troubleshoot to easy fix this?

Important edit: I can boot in to OSX recovery if that’s any use

submitted by /u/melanantic
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