start up hangs

Guys, When I start the installation of Catalina from Clover, it stops at the end of the Apple bar. I have already waited for 10hours but nothing changes. Can anyone help me or had the same problem?

I have a Seagate SATA 6Gb/s 3.5-Inch 4TB Desktop HDD (ST4000DM000) that, when plugged in, prevents my computer from booting up. I get past the Gigabyte screen, and get stuck on the "spinning back/forward slash" screen (sorry, I'm not super tech savvy, so I don't know a lot of technical terms...

Hi there, I managed to install 10.8.5 and I'm using it with Pro Tools (DAW) for quite a while now without any issues, except of this one: After maybe one of ten regular shutdowns (no panics) the system drive needs FS repair, which can not be handled by a simple fsck -fy. So I have to boot into...

after updating to the new yosemite 10.10.1, i restarted the system, it then hung, so i restarted it with the bootflag, -v after this i discovered that it would hang at dependency: com.apple.iokit.ioacpifamily(1.4) i have tried everything, i don't know what to do, i am bit of a beginner as well...