HELP! Mac keeps restarting after Catalina download
So I recently just cleared up my late 2015 Mac and since the old OS couldn’t accommodate Office 365 (and so much more), I had no choice but to download Catalina. After downloading, I restarted my computer to install it and it would reach only up to 90% and restart. It would sometimes reload and reach the log-in screen but after I type my password and enter, it would restart again. (and again and again)
I tried to go to Disk Utility through recovery and ran first aid but it only says “unable to unmount volume for repair” and “first aid process has failed”.
I also looked up some solutions online and using force unmount on terminal still doesnt work :(
Reinstalling Mac OS just brings me back to where I started. SEND HELP :(
iMac Line (2012 and Later)