If it is a Virtual PC .vhd file, then I can make a copy of it so that if the .vhd goes bad for any reason (catch a virus or installed undesirable software), then I can use that old .vhd and start a new machine as if nothing happened.

Can I do that with a .vdi used by VirtualBox too?

the .vdi is about 3GB and comes from a fresh installation of Win XP from DVD-ROM.

thanks.

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2 Answers

If you're simply replacing a .vdi for an existing VM, it will work. Otherwise you have to be cognizant of the fact that .vdi files have embedded UUIDs. To avoid clashes, make sure to use the vboxmanage.exe clonehd command.

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If you want a portable backup that you can restore, use the export and import commands.

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