virtualBox虚拟机安装增强功能后开机超慢问题解决方案

virtualBox虚拟机安装增强功能后开机超慢

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开机现象:
virtualBox安装增强功能后, 开机一直显示:
a start job is running for vboxadd.service
a start job is running for ...
开机速度非常慢.

1. 使用使用以下命令查看占用开机时长的服务

$ systemd-analyze blame

5min 8.837s plymouth-quit-wait.service
5min 70ms vboxadd.service
3.372s man-db.service
2.708s logrotate.service
2.539s fwupd.service
2.459s e2scrub_reap.service
1.617s dev-sda1.device
1.511s apparmor.service
1.087s ssh.service
863ms udisks2.service

2. 使用命令禁掉前2个服务

$ sudo systemctl disable plymouth-quit-wait.service

$ sudo systemctl disable vboxadd.service
Removed /etc/systemd/system/multi-user.target.wants/vboxadd.service.