原文出处： http://blog.sina.com.cn/s/blog_53d27b3a0100cq5j.html

虚拟主机硬盘文件(.vmdk)的大小会随着安装软件不断变大，有时候空间紧张的话，最好收缩一下，刚好有个命令，使用参数-k就行了，也可以使用-d命令来整理一下，参考如下：

E:VMwareVMware Server>vmware-vdiskmanager.exe/? VMware Virtual Disk Manager - build 56528. Usage: vmware-vdiskmanager.exe OPTIONS diskName |drive-letter: Offline disk manipulation utility Options: -c : create disk; need to specify other create options -d : defragment the specified virtual disk -k : shrink the specified virtual disk -n<source-disk> : rename the specified virtual disk; need to specify destination disk-name -p : prepare the mounted virtual disk specified by the drive-letter for shrinking -q : do not log messages -r<source-disk> : convert the specified disk; need to specify destination disk-type -x<new-capacity> : expand the disk to the specified capacity Additional options for create and convert: -a<adapter> : (for use with -c only) adapter type (ide, buslogic o r lsilogic) -s<size> : capacity of the virtual disk -t<disk-type> : disk type id Disk types: 0 : single growable virtual disk 1 : growable virtual disk split in 2Gb files 2 : preallocated virtual disk 3 : preallocated virtual disk split in 2Gb files The capacity can be specified in sectors, Kb, Mb or Gb. The acceptable ranges: ide adapter : [100.0Mb, 950.0Gb] scsi adapter: [100.0Mb, 950.0Gb] ex 1: vmware-vdiskmanager.exe -c -s 850Mb -a ide -t 0myIdeDisk.vmdk ex 2: vmware-vdiskmanager.exe -d myDisk.vmdk ex 3: vmware-vdiskmanager.exe -r sourceDisk.vmdk -t 0destinationDisk.vm dk ex 4: vmware-vdiskmanager.exe -x 36Gb myDisk.vmdk ex 5: vmware-vdiskmanager.exe -n sourceName.vmdkdestinationName.vmdk ex 6: vmware-vdiskmanager.exe -k myDisk.vmdk ex 7: vmware-vdiskmanager.exe -p m: (A virtual disk first needs to be mounted at m: using the VMware Diskmount Utility.)