Hi,
I installed Kali Linux v2019.4 by it's iso file on VirtualBox . During installing if i tick "yes" for mirror network , then after installation , Kali not loaded and just show black screen with cursor .


And if i tick "no" for mirror network , then the Kali is running up but i can't work with apt command anyway .and get E: unable to locate package <pkg>.

i tried adding repositories method but not working .

and also note that the apt commands are working for virtualBox image version .

sorry for my English .