RAMdisk in XPmode trouble

July 11, 2012 at 01:16:03
Specs: Windows 7, i7 16GB
Stupid but...
- Installed a RAMdisk in win7pro.
- Added a XPmode virtual disk residing in the win7pro RAMdisk thru the Virtual Machines Manager.
- This allowed adding second RAMdisk in the XP running under virtual PC (XPmode). Purpose was to add fast swap file to the 3712MB RAM limit in XPmode).

Then I hibernated XPmode and turned win7pro off/on thereby loosing the .vhd file for the virtual disk I've just added to XPmode (which was located in the win7pro RAMdisk, thus lost in space).

Now I can't start XPmode due to the missing .vhd file ( win7pro reports error on startup).
I can't edit(remove) the added XPmode virtual disk with the Virtual Machines Manager when the particular VM(XPmode
) is hibernated.
What to do? Can I add a fake .vhd just to get thru XPmode start-up? How to?


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#1
July 11, 2012 at 03:55:18
Putting the swap file on a RMA Disk is never going to work with any kind of installation, virtual machine or otherwise.

When a system shuts dowm the RAM disk ceases to exist, it disappears altogether with no trace along with there contents. That is what RAM disks do. When the system reboots, the operating system has to be fully loaded before the RAM Disk cane be recreated.

Besides, using a RAM disk is a very poor use of resources. That RAM would be better utilised for data storage and keep the Swap file on a real disk. There is really no need for a RAM disk in a modern computer.

Stuart


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#2
July 11, 2012 at 04:14:30
Stuart,
You're right!
I planned to use the XPmode RAMdisk for application "temp-files".
(lots of RAM but very small amount of SSD resources)

However, I'm still in a fix with a hibernated XPmode and a missing .vhd file.

It's a catch 22, I can't remove the virtual disk with the Virtual Machines Manager and can not un-hibernate(wake up) XPmode due to missing .vhd


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#3
July 11, 2012 at 14:41:47
IN that case you are going to have to delete the VM altogether from the Host OS and reinstall it again from scratch.

Stuart


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#4
July 11, 2012 at 15:19:18
I began the thread with Stupid but.... ;-)
I have a few user files (maybe not "life upholding" but) which would be nice to be able to access again residing on the default XPmode virtual disk (not the added RAMdisk virtual disk).

Would it be possible to save a copy of my current XPmode virtual disk (if visible from the host OS?), delete/reinstall the XPmode VM and restore the XPmode (saved copy) .vhd file?
I'm not competent to answer that question, but if "feels" like failing on any sort of dynamic condition.

Rhetorical: bit of a disappointment that XPmode isn't 64-bit (or 34-bit) when installed under win7pro-64 (limiting accessible RAM to 3712MB).


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#5
July 11, 2012 at 19:09:36
There is no reason that I can see why you should not be able to restore the virtual drive once you have restored the Virtual machine.

you can try it, you have nothing to lose

Stuart


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#6
July 11, 2012 at 20:13:58
Yes you can and I have done it. Once I got my virtual disk the way I wanted it I saved the entire .Virtual Box folder complete to another drive. When I re-install I copy it back over the newly created.Virtual Box folder and I am back to normal. Virtual box has been updated and i haven't tried it with the new version yet.

PS I have just re-read your post and I note that it is Virtual Disk you are using... my information may be worthless!


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