1.https://blog.csdn.net/ouyang_peng/article/details/53261599
2.然后查看需要修改的虚拟硬盘：
VBoxManage list hdds
UUID: c7713fc1-acb6-457c-9856-bcc3c0289733
Parent UUID: base
State: locked write
Type: normal (base)
Location: C:\Users\dust\VirtualBox VMs\ubuntu\ubuntu.vdi
Storage format: VDI
Capacity: 10240 MBytes
Encryption: disabled
4.路径 C:\Program Files\Oracle\VirtualBox>
VBoxManage modifyhd c7713fc1-acb6-457c-9856-bcc3c0289733 --resize 20480
修改内存图
5.挂载
