1.固定磁盘转换为动态磁盘

"E:\ProgramFiles\VirtualBox5\VBoxManage" modifyhd "E:\wjxDRL\wjxww20200831-disk001.vmdk" -type normal

2.vmdk转化为vdi

"E:\ProgramFiles\VirtualBox5\VBoxManage" clonehd "E:\wjxDRL\wjxww20200831-disk001.vmdk" "D:\wjxDRL\Vboxwjx20210114.vdi" --format VDI

3.扩容

"E:\ProgramFiles\VirtualBox5\VBoxManage" modifyhd  "D:\wjxDRL\Vboxwjx20210114.vdi" --resize 61440

4.更换磁盘。