I have written about shrinking the virtual disk of an OS X Virtual Machine here but recently I needed to shrink a Linux virtual machine. The process is almost identical across all of VMware’s products you just have to find the vmware-vdiskmanager tool. The process In most operating systems removing the files from the disk merely alters file tables so the operating system sees the space as free on the disk.

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Reducing the size of a guest OS X Virtual Machines’s vmdk file requires a few steps. For a Windows VM’s, there is a tool from VMWare with a GUI. Unfortunately, there is not an equivalent tool for the Mac guest VM. This technique has tested and confirmed on OS X 10.9.2 using VMware Fusion 6.02 though it should work from 10.7 and up. This assumes your guest vm’s disk is not pre-allocated, and the virtual machine does not have any snapshots.

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Clayton Burlison

Just another nerd writing and documenting things he finds interesting.

Mac System Engineer

Texas, USA