accidentally renamed HD (Imac ,27inch late 2015

Hello,

wondering if someone come a problem I am having with Imac.

Accidentally renamed HD to something with characters .And happend run update right after it .

Now update can not apply and boots with error .And whenever I do anything in Disk Utility (partition,erase etc)

it come back with "invalid request" error . I tried Internet Recovery which kick me out Disk Utility .

I can only boot into Safe Mode . Any ideas ? Besides bring it to Apple store 🙂 .