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PhoebusGR

Previously working installation of Catalina no longer boots

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Hello there !
After a few weeks of not using catalina because I couldn't make my iGPU work (i5-6400+Asrock H170 Pro4/Hyper), I decided to boot again to start fixing issues but to my surprise my installation no longer booted.I recreated my bootable USB using Clover, and that doesn't boot either ! 

Does anybody have any idea what I'm doing wrong? I suppose first thing to look for would be modified BIOS settings interfering.
Thanks for replying, have a nice day

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Have you external drive(s) plugged in? If so try to disconnect every external device and boot verbose mode so we can look at your booting process and the moment it hangs

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External drives? Like from USB ? No, I have 1 NVMe and one SATA III (SSDs).
I would like to show you my verbose but unfortunately when I open UEFI boot menu, neither work (old installation/bootable USB) when I select one of these, screen goes black for 1 second and then returns to boot menu.Nothing happens essentially, I cannot execute verbose.

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what error do you see when when using the -v in the boot args

 

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