id	summary	reporter	owner	description	type	status	component	version	resolution	keywords	cc	guest	host
18195	CentOS 7 boot hangs after installing Guest Additions	Harish		"
Host: Mac OS
Guest: CentOS 7
VirtualBox Version: 5.2.20 r125813 (Qt5.6.3)

I installed ""Guest Additions"" and restarted my CentOS. Since the CentOS doesn't boot....  it hangs while booting. 
"	defect	new	guest additions	VirtualBox 5.2.20				Linux	Mac OS X