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I use virtualBox version 4.2.6 and I install windows server 2008. the issue is when I was working with this windows a message is displayed said that the capacity of disk is limited. so I want to know if there is a method to increase the disk size. thank

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i try this method : VBoxManage modifyhd YOUR_HARD_DISK.vdi --resize SIZE_IN_MB but it doesn't work – Ellouze Anis Jan 31 at 14:18
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please provide the error message you get when you attempt to resize the disk – Steve Jan 31 at 14:21
0%... Progress state: VBOX_E_NOT_SUPPORTED VBoxManage.exe: error: Resize hard disk operation for this format is not implemented yet! – Ellouze Anis Jan 31 at 14:59
I guess VM guest OS is not running – jet Jan 31 at 17:05

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It looks like what ever type of file format the disk is stored in does not support resizing using the tool

Resize hard disk operation for this format is not implemented yet!

If the disk was set to Fixed and not dynamic that is probably the issue.

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the disk is set to dynamic – Ellouze Anis Jan 31 at 15:37
can you paste the full command you are running. – Steve Jan 31 at 15:49
VBoxManage.exe modifyhd "C:\Documents and Settings\user\VirtualBo x VMs\windows\windows.vdi" --resize 40 0%... Progress state: VBOX_E_NOT_SUPPORTED VBoxManage.exe: error: Resize hard disk operation for this format is not implemented yet! – Ellouze Anis Jan 31 at 16:11
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Your vdi format does not support resizing. Maybe you could try cloning it to a new, larger vdi, possibly with a format that does support resizing. Have a look at the clonehd option of VBoxManage here http://www.virtualbox.org/manual/ch08.html#vboxmanage-clonevdi

Then you can use the new, larger vdi in your virtual machine.

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