Thanks for the reply. I’ll also mention that I didn’t boot from USB, and I was able to get to WinRE booting from my SSD now. I’m not very tech savvy, but would it still be okay to press Y to continue? As it mentions that Drive Y will be lost and I haven’t backed up anything
Thanks!
Yes, go ahead and press Y. It's your 100 MB EFI partition, as shown in the list vol output. I assume you didn't make any partition or disk changes since you posted the last screenshot.
But I'd suggest dedicating some time to it and completing the steps at a stretch rather than doing it part by part.