id	summary	reporter	owner	description	type	status	component	version	resolution	keywords	cc	guest	host
16529	Linux guest additions update creates spurious initramfs copies	JMHOGM		"With a Win7-X64 host and a CentOS7 guest, I've been seeing a problem for several months where everytime I tried to update the Guest Additions, more than a dozen old initramfs versions would get created, overflowing /boot. The Guest Additions update would only complete after I removed the earliest initramfs versions to make more room. Note that there are not old kernel versions on this system; only the 2 most recent kernels and a recovery are present.

After several attempts, I finally tracked this down to multiple old guest additions subdirectories under /opt. These were empty; apparently the old additions had been properly removed but the empty directories had been left around and this was confusing the guest additions update process. Removing these empty directories cured the problem."	defect	new	guest additions	VirtualBox 5.1.14				Linux	Windows