Cannot register the hard disk … UUID … already exists

Copying VMDK to VDI in VirtualBox
How to Fix VirtualBox UUID already exists Errors

问题描述：当添加磁盘时，提示无法注册磁盘，因为 UUID 已存在：

Cannot register the hard disk ‘E:\VirtualBox VMs\Windows 8 \Windows 8 Enterprise
2.vhd’ {ca2bdc6a-a487-4e57-9fcd-509d0c31d86d} because a hard disk ‘E:\VirtualBox 
VMs\Windows 8 Enterprise\Windows 8 Enterprise2.vhd’ with UUID {ca2bdc6a-a487-4e5
7-9fcd-509d0c31d86d} already exists.

原因分析：使用 cp 命令直接复制，导致虚拟磁盘文件的 UUID 相同

解决方案：

# 正确的复制方法
vboxmanage" clonehd original.vmdk new.vdi --format VDI

# 修改 UUID（不一定适用）
vboxmanage internalcommands sethduuid "C:\_VMs\SC9u1\sc9u1.vdi"

#1

Unable to insert the virtual optical disk /opt/VirtualBox/additions/VBoxGuestAdditions.iso into the machine Centos_6.8_x86-64_Local.

在创建虚拟机时，操作系统没有64位选项

Why does virtualbox only have 32-bit option, no 64-bit option on Windows 7?

原因分析：问题原因由很多，在我们的场景里是没有开启虚拟化技术，需要在BIOS中开启 Intel Virtualization Technology 选项。

在启动虚拟机后，立刻显示退出，显示 Aborted 状态

virtualbox.org • View topic – VirtualBox 6.1.10 on macOS Catalina 10.15.5 aborting

问题描述：在启动虚拟机后，立刻显示退出，显示 Aborted 状态

环境信息：macOS 10.15.6, VirtualBox 6.1, CentOS Linux release 7.5.1804 (Core)

问题原因：If the last line of the guest’s vbox.log cuts out at “checking audio input permissions”, that is a known issue with Mac OS for now.

解决方法：Disable audio in the guest’s Audio settings to get the guest to run. I think the devs are working on it or waiting for Apple to fix something

补充说明：我们没有深入，音频对于我们来说无关紧要，直接关闭即可。如果需要使用音频功能时，我们再研究。

Bridged networking fails to reconnect when cable unplugged and plugged back in

Bridged networking fails to reconnect when cable unplugged and plugged back in
guest does not regain network connectivity if cable unplugged for for 5+ secs

问题描述：
1）当物理网线插拔时，虚拟机的桥接网络没有随着变化。当再次插入网线之后，虚拟机无法访问网络。
2）Windows 10 IoT Enterprise 21H1，VirtualBox 5.2.44；