Windows 2008 Server Standart VM won't shrink D drive as available space

Hi all !!

Here is my problem actually ! Hope I'm clear enought !

SETUP :
-HYPERV : Server 2012 R2
-2 ARRAYS : RAID5 10K 1.6TB  &  RAID10 15K 800GB
-CONTAINER : Controller IDE VHDX 830GB  located in the  RAID5 10K
-VM : Windows 2008 Server Standard with a 160GB C: drive  and a  830GB D: drive

PROBLEM :
- Moving a 830GB VHDX into a 800GB container
- In the VM Win2008 the D drive usage is 515GB free out of 830GB
- In HyperV Manager the VHDX file says 770GB used out of 830GB
- In the VM Win2008 the Disk Shrink won't let me shrink more than 990MB ???

ACTIONS TAKEN :
- Removed pagefile for the D drive
- Performed a Defrag
- Set Write Debugging Information to NONE
- Defrag again
- Installed Smart Defrag to see the map and no unmoveable file are at the end of the volume...

Any suggestions would be very appreciate !!!
AxelIT TechAsked:
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ArneLoviusCommented:
If you can cope wit the downtime, I would usually suggest doing an offline partition shrink using a tool such as gparted live, which the VM can boot from ISO.

http://gparted.org/livecd.php

After the partition shrink has finished, and the VM has been shut down, you can then shrink the .vhdx in Hyper-V manager.

If you have sufficient space, on your RAID5 volume, to test using gparted, you could test the gparted shrink on a copy of the .vhdx. To have minimal downtime when copying, shut down the VM and take a checkpoint in Hyper-V Manager, then you can copy the .vhdx file while all changes are written to its associated .avhdx, after the copy has finished, you can delete the checkpoint in Hyper-V Manager and it will merge the .avhdx with the .vhdx
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Aaron TomoskySD-WAN SimplifiedCommented:
In the VM Disable page file and hybernation and reboot.
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ArneLoviusCommented:
only accurate answer
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