Hyper-V - How to compress a virtual disk with a dynamic size
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Hello, in this video I present how to compact a VHDX to dynamic size in Hyper-V in graphical or command line and also why sometimes it doesn’t give any result.
Code Powershell pour compacter un VHDX en taille dynamique
# VHDX location.$vhd = "F:\vm\2019-4.vhdx"# Read-only mount required for compactionMount-VHD $vhd -ReadOnly# Volume compressionOptimize-VHD $vhd -Mode full# Unmount the volumeDismount-VHD $vhd
# If you do not recover any space, optimise the volume using the following options# Directly from the virtual machine to the desired volumeOptimize-Volume -DriveLetter C -Retrim -SlabConsolidate# Or by mounting the disk locally# Retrieve information about the disk volumes$Mount = Mount-VHD $vhd -Passthru | Get-Disk | Get-Partition | Get-Volume# I filter to get only the system volume$Volume = $Mount.Where({$_.size -gt 1gb }).path
# OptimisationOptimize-Volume -path $Volume -Retrim -SlabConsolidate# Unmount the volumeDismount-VHD $vhd
# Restart the compaction operation# Read-only mount required for compaction$Mount = Mount-VHD $vhd -ReadOnly# Compact the volumeOptimize-VHD $vhd -Mode full# Unmount the volumeDismount-VHD $vhdVideo : Hyper-V - How to compress a virtual disk with a dynamic size
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