今天看到VMware有一种改变预分配硬盘空间方法，试验后也可以完成，假设拟定vmware虚拟的在e分区的win2003下，那么转到vmware的cmd下，运行

vmware-vdiskmanager -x 4Gb "E:vmwin2003Windows Server 2003 Enterprise Edition.vmdk"

C:Program FilesVMwareVMware Workstation>vmware-vdiskmanager -x 4Gb "E:vmwin
2003Windows Server 2003 Enterprise Edition.vmdk"
Using log file C:DOCUME~1ADMINI~1LOCALS~1Tempvmware-Administratorvdiskmana
ger.log
Grow: 100% done.
The old geometry C/H/S of the disk is: 261/255/63
The new geometry C/H/S of the disk is: 522/255/63
Disk expansion completed successfully.
WARNING: If the virtual disk is partitioned, you must use a third-party
utility in the virtual machine to expand the size of the
partitions. For more information, see:
http://www.vmware.com/support/kb/enduser/std_adp.php?p_faqid=1647

意思是给你的虚拟系统的“硬盘”增加到4G（就象你的硬盘多了n个柱面一样），注意，运行后系统还得用第三方工具把“硬盘”分区扩增了。

注意，无论你用克隆方法还是命令行方式，原来的快照都会丢失。

参考一下：

VMware Virtual Disk Manager - build 12544.

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 : 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 : convert the specified disk; need to specify

destination disk-type

-x : expand the disk to the specified capacity

Additional options for create and convert:

-a : adapter type (ide, buslogic or lsilogic)

-s : capacity of the virtual disk

-t : 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 0 myIdeDisk.vmdk

ex 2: vmware-vdiskmanager.exe -d myDisk.vmdk

ex 3: vmware-vdiskmanager.exe -r sourceDisk.vmdk -t 0 destinationDisk.vm

dk

ex 4: vmware-vdiskmanager.exe -x 36Gb myDisk.vmdk

ex 5: vmware-vdiskmanager.exe -n sourceName.vmdk destinationName.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.)

这样，您的改变预分配硬盘空间工作基本上就完成了，请大家自己试验一下。

【编辑推荐】

1. 使用存储精简配置回收未使用的VMDK空间
2. NetApp：虚拟化让硬盘空间节省99%
3. 带您理解VMware虚拟机软件