在开始用VM VCENTER CONVERTER将物理机转换成虚拟机时，P2V，
那么硬盘的类型可能会是IDE，而不是更新的LSILOGIC。
不能增加硬盘容量，更别说减小了。（减少好费时间，我曾想减小一个850G的虚拟IDE硬盘，怕太影响生产环境，放弃了）
VM WARE官方提供了解决办法：
关键布置很简单：
- Locate the datastore path where the virtual machine resides.
For example: # cd /vmfs/volumes/<datastore_name>/<vm_name>/ - From the ESX Service Console, open the primary disk (.vmdk) using the vi editor. For more information, see Editing files on an ESX host using vi or nano (1020302)
- Look for the line:
ddb.adapterType = "ide" - To change the adapter type to LSI Logic change the line to: ddb.adapterType = "lsilogic"
To change the adapter type to Bus Logic change the line to:
ddb.adapterType = "buslogic" - Save the file.
- From VMware Infrastructure/vSphere Client:
- Click Edit Settings for the virtual machine.
- Select the IDE virtual disk.
- Choose to Remove the Disk from the virtual machine.
- Click OK.
Caution: Make sure that you do not choose delete from disk.
- From the Edit Settings menu for this virtual machine:
- Click Add > Hard Disk > Use Existing Virtual Disk.
- Navigate to the location of the disk and select to add it into the virtual machine.
- Choose the same controller as in Step 3 as the adapter type. The SCSI ID should read SCSI 0:0.
- If a CDROM device exists in the virtual machine it may need to have the IDE channel adjusted from IDE 0:1 to IDE 0:0. If this option is greyed out, remove the CD-ROM from the virtual machine and add it back. This sets it to IDE 0:0.
