将.ova文件转换为.vdi
我已经通过.ova文件在虚拟框上安装了Mininet-Wifi。它的操作系统是Lubuntu。由于移动和删除的结果，删除或丢失了虚拟盒中Mininet-Wifi文件夹中的.VDI文件。但是.vbox文件仍然存在。当我尝试从虚拟机打开时，“ vd：错误verr_file_not_found打开图像文件'c：\ users \ nilya \ nilya \ virtualbox vms \ mn-wifi \ mn-wifi-vm-disk002.vdi'（verr_file_not_found）。 /代码>我有一个错误。我试图替换.VDI文件，以免重新安装它。我再次下载了Mininet Wifi .ova。我通过winzip打开了.ova文件。即使它完全有我要寻找的.VDI文件，但它的图标已经消失了，好像它已经死了，它无效。.VDI文件应该是橙色立方体图标。 虚拟机仍然不会打开。为什么 ？我该怎么办？
I had installed mininet-wifi on virtual box via .ova file. Its operating system was lubuntu. As a result of moving and deleting, the .vdi file in the mininet-wifi folder in the virtual box was deleted or lost. But the .vbox file still exists. When I try to open from virtual machine "VD: error VERR_FILE_NOT_FOUND opening image file 'C:\Users\nilya\VirtualBox VMs\mn-wifi\mn-wifi-vm-disk002.vdi' (VERR_FILE_NOT_FOUND)." I get an error. I tried to replace the .vdi file so as not to reinstall it. I downloaded mininet-wifi .ova again. I opened the .ova file via winzip. Even though it had exactly the .vdi file I was looking for, its icon was gone, as if it was dead , it didn't work.The .vdi file should have been an orange cube icon.
The virtual machine still won't open. Why ? And what can I do? 
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您不应自己解开ova文件（在知道您在做什么之前）。使用OVA文件的正确方法是“文件” - ＆gt; “导入虚拟设备”。
看起来您的设置需要文件“ Mn-Wifi-vm-disk002.vdi”。但是，根据您的屏幕截图，您可以用不同的名称“ mn-wifi-vm-disk002.vmdk”（extension .vmdk代替.vdi）拆开文件。
You should not unpack OVA file yourself (before known what you doing). Right way to use OVA file is "File" -> "Import Virtual Appliance".
Looks like your setup requires file "mn-wifi-vm-disk002.vdi". But, according your screenshot, you unpack the file with different name "mn-wifi-vm-disk002.vmdk" (extension .vmdk instead .vdi)
快速笔记，然后再告诉您该怎么办：
OVA文件通常包含VMDK文件，而不是VDI文件，以及它给您此错误的原因是因为您有一个VMDK文件而不是VDI，但通常有一个复选框将VMDK文件转换为VDI，但也许您没有检查过它首先没有被打勾。
尝试我说的话：
1：尝试卸载VirtualBox，然后再次重新安装它。
2：确保VirtualBox是最新的，然后再次导入VM，并在导入时选中“导入硬盘为VDI”的框。
3：单击VM，然后单击文件 - ＆GT;导出设备，然后按照这些步骤进行操作，然后涉及保存的位置，将其保存为OVF，然后检查“ Inclance castest File”并取消选中“ Include Iso File”，然后使用OVF文件导入VM并进行检查我在步骤2中提到的盒子。
4：从一开始下载VM OVA或OVF，并以相同的复选框导入（就像我在步骤2中提到的那样）。
Quick notes before I tell you what to do:
OVA files normally contain VMDK files instead of VDI files and the reason why it is giving you this error is because you have a VMDK file instead of VDI, but normally there is a checkbox ticked which converts the VMDK file to VDI, but maybe you unchecked it or it was not ticked in the first place.
Try what I say in order:
1:Try uninstalling virtualbox then reinstalling it again.
2:Make sure virtualbox is up to date, then import the VM again and check the box that says "Import hard drives as VDI" when importing it.
3:Click the VM then click File -> Export Appliance, then follow the steps, and when it comes to the location where it is saved, save it as OVF, then check "Include Manifest File" and uncheck "Include ISO File", then import the VM with the OVF file and check the box I mentioned in step 2.
4: Download the VM OVA or OVF from the beginning and import it with the same checkbox ticked (just like I mentioned in step 2).