本文主要是在linux中安装VirtualBox后，使用VBoxManage配置虚拟机。

本文命令支行环境如下：

宿主机OS：fedora33

VirtualBox版本：6.1.22

虚拟机OS：CentOS7

虚拟机name：centos-7-20210521

如是只是虚拟机换了目录，比如，我这是就是把虚拟机的目录由“/root/VirtualBox VMs/”换到了“/mnt/git/VirtualBox-VMs/”

也就作了如下操作：

[root@localhost ~]# mv -f /root/'VirtualBox VMs'/* /mnt/git/VirtualBox-VMs/
[root@localhost ~]# VBoxManage registervm /mnt/git/VirtualBox-VMs/centos-7/centos-7-20210521/centos-7-20210521.vbox
[root@localhost centos-7-20210521]#  VBoxManage list vms
"centos-7-20210521" {b09f4765-c719-4fe6-98bb-061a1e21c731}
[root@localhost centos-7-20210521]# VBoxManage startvm centos-7-20210521 --type headless
Waiting for VM "centos-7-20210521" to power on...
VBoxManage: error: Could not open the medium '/root/VirtualBox VMs/centos-7/centos-7.vdi'.
VBoxManage: error: VD: error VERR_FILE_NOT_FOUND opening image file '/root/VirtualBox VMs/centos-7/centos-7.vdi' (VERR_FILE_NOT_FOUND)
VBoxManage: error: Details: code NS_ERROR_FAILURE (0x80004005), component MediumWrap, interface IMedium
[root@localhost centos-7-20210521]# VBoxManage list hdds
UUID:           239206ae-49a3-4ed6-abfd-11b65b068b60
Parent UUID:    base
State:          inaccessible
Type:           normal (base)
Location:       /root/VirtualBox VMs/centos-7/centos-7.vdi
Storage format: VDI
Capacity:       0 MBytes
Encryption:     disabled

[root@localhost centos-7-20210521]# VBoxManage modifymedium disk 239206ae-49a3-4ed6-abfd-11b65b068b60 --setlocation /mnt/git/VirtualBox-VMs/centos-7/centos-7.vdi 
Set new location of medium with UUID 239206ae-49a3-4ed6-abfd-11b65b068b60 finished
[root@localhost centos-7-20210521]# VBoxManage list hdds
UUID:           239206ae-49a3-4ed6-abfd-11b65b068b60
Parent UUID:    base
State:          created
Type:           normal (base)
Location:       /mnt/git/VirtualBox-VMs/centos-7/centos-7.vdi
Storage format: VDI
Capacity:       10240 MBytes
Encryption:     disabled
[root@localhost ~]# VBoxManage storageattach centos-7-20210521 --storagectl SATA --port 0 --device 0 --type hdd --medium none
[root@localhost ~]# VBoxManage storageattach centos-7-20210521 --storagectl SATA --port 0 --device 0 --type hdd --medium "/mnt/git/VirtualBox-VMs/centos-7/centos-7.vdi"