Screen of death
I'm running catalina 10.15.7 on an older iMac. It won't boot past the logo screen with a complete loading bar. Recovery mode doesn't work, (my hard drive is greyed out in the new image location). Neither does safe mode, sco, opt restart, nvram. The machine is due for replacement but naturally all my photos, music and dat are still on there. I almost bought Stellar data recovery, until I read some reddit reviews saying it was a scam. Is there a chance of retrieval?
iMac 21.5″, macOS 10.15