On Tue, 17 Feb 2009 03:40:50 -1000, "Melelina" <melelina@xxxxxx>
>"philo" <philo@xxxxxx> wrote in message
>The Help file is sort of confusing on this:
>> "Melelina" <melelina@xxxxxx> wrote in message
>>>I have Vista Ultimate on VPC and one fixed virtual hard drive. I am out of
>>>space on that drive. I would appreciate pros and cons on whether I should
>>>convert the fixed drive to an dynamic expanding one or should I add a
>>>second virtual disk and if I do that does it need to be fixed like the
>> I'd use the dynamic expanding option
>> and simply set the size for the maximum you think you may eventually need.
>> No harm in making your estimate on the high side...as it will only expand
>> to what is actually needed.
>Hmmm....I can't copy/past from the help file. I wonder why? Anyhow, the
>help file says that before converting to an expanding disk, I need to use a
>third party disk utility to zero out the blank spaces. I don't know what
>that means. Then it says that after I do this, I need to compact the disk.
>This is while it is still a fixed size disk.
>Then the Help file appears to contradict itself when I look at the Compact a
>virtual Hard Disk section. There it says that the compaction option is
>available ONLY for expanding disks. Huh? Earlier it says under Create a
>Dynamically Expanding Disk from a Fixed Size disk that I am supposed to
>compact the disk after using a third party software to zero out the blank
>spaces and it says I am supposed to compact the disk while it is still a
>fixed disk BEFORE converting it.
>That is all very confusing. Plus, I don't know what zeroing out blank spaces
In your case I'd do one of two things:
1) Use VHDResizer to move your old vhd disk data into a new fresh
dynamically expanding disk set to a really large size.
At the end you need to expand the new VHD partition (because it will
be a same-sized partition plus lots of unused space). You can do this
according to a description in this link: http://kb.dutchalps.com/microsoftvirtualpc.htm
2) Create a new empty virtual disk using the virtual disk wizard.
Then attach this to the guest you want to expand the disk of.
Then boot up the guest and use whatever disk imaging software you have
access to to copy your boot disk image to the now available new and
empty disk. I have done this using both Norton Ghost 2003 and Acronis
Workstation products. Ghost 2003 works well for operating systems
below Vista, but has trouble with Vista. Acronis handles Vista too
These products will allow expanding the data into the full disk sized
partition at imaging time so after you are done, just shut down the
guest and in the guest settings change the virtual disks (disable disk
#2 and set the new disk as disk #1)
Bo Berglund (Sweden)