Restoring a VirtualBox VM to a clean/default state?
Solution 1
You seem to want to preserve the configurations for the virtual machine.
The easy way to accomplish this is obvious: detach the virtual disk image and replace it with a new one.
The configurations for the virtual machine remain in tact, but the stored data is gone.
1. In Settings >> Storage, remove the current virtual disk image.
2. Add a new attachment: "Add Hard Disk".
3. "Create new disk"
4. VirtualBox will use the new disk.
Solution 2
For future reference, after you've installed the virtual machine and have everything running, create a snapshot. This will allow you to revert back to this squeaky, clean state whenever you want!
See Also:
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pnongrata
Updated on September 18, 2022Comments
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pnongrata over 1 year
I am playing around with Virtual Box and installed an Ubuntu 12.04 ISO on a my first VM. Now I want to "wipe" that VM clean and undo all the software I had installed on it. My co-worker said the easiest thing to do is to just re-install Ubuntu and overwrite everything.
What's the easiest way to do this with VBox? Should I just delete the whole VM and recreate it from scratch? It would be nice if I can just tell VBox "hey, take this VM, erase everything on it, and then replace it with this ISO" instead of having to delete the entire VM and create a new one. Is this possible? If so, how? If not, what's my best remedy here? Thanks in advance!
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pnongrata almost 12 yearsThanks @Deltik (+1) - I presume I accomplish this in Settings >> Storage? I see an "Attributes" section with a CD icon that allows me to choose an ISO? Do I just choose the same ISO as before (would doing so cause VBox to overwrite my old VM with the new ISO)?
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Deltik almost 12 years@zharvey You replace the
.vdi
file with a new one. (Sorry for the late clarification, but I'm on a different computer right now, so I just downloaded VirtualBox to get screenshots.) -
pnongrata almost 12 yearsThanks again - I removed my existing attachment and added a new one (pointing to my Ubuntu ISO). I restarted the VM and got the following error:
FATAL: Could not read from the boot medium. System halted.
Where am I going wrong here? Thanks again! -
Deltik almost 12 yearsCreate a new hard disk. Don't point it to the ISO file. Then start up the virtual machine. You'll still get the fatal error, but go to
Devices >> CD/DVD Devices >> Choose a virtual CD/DVD disk file...
, choose your ISO file, then reset the virtual machine. (Screenshot)