Catalina Install Problem! Ethernet!

Actually I have faced 2 problems, the first one is that even after including RTL8111.kext , I am still receiving no internet connection on MacOS installation. What shall I do?

My second problem now is that after this failed attempt for installation, BIOS cannot find my SSD(Samsung) and I cannot boot into my other OS (Manjaro). Do you have any ideas why is this happening?

Lenovo B50-80

Intel Core i7 5500u 2.4GHz - Broadwell

Intel HD Graphics 5500

AMD Radeon M330

Samsung SSD 860 EVO 250GB

RTL8111/8168/8411 PCI Express Gigabit

8GB RAM

submitted by /u/ckostanikos
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