标题: VMware用Host的U盘启动Guest

创建: 2019-04-15 14:17
更新: 2019-08-27 17:49
链接: https://scz.617.cn/windows/201904151417.txt

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VMware Workstation可以直接把Host的物理硬盘或者其分区用作Guest的硬盘，也支
持把Host的U盘用作Guest的硬盘。不过对U盘的支持有以下注意事项:

a)

必须在启动VMware之前插入U盘，VMware的物理硬盘列表中才会出现之前插入的U盘，
形如"PhysicalDriveN"

b)

VMware主程序必须以管理员权限运行，才能成功创建Guest的硬盘，之后就不需要以
管理员权限运行VMware主程序了。

Host的U盘用作Guest的硬盘，最大的好处就是VMware可以用Host的U盘启动Guest。具
体操作是为Guest添加硬盘，选中Host的U盘。
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这是小钻风在2011年时写的。过去我没这需求，一直没留心过，今天因故要用这招。

如果你不确定"PhysicalDriveN"中的"N"，可以用diskmgmt.msc看，"磁盘3"对应
"PhysicalDrive3"。

Host是x64/Win7，VMware Workstation 15。Host的U盘是枚WinPE，MBR/PBR中用
BOOTICE写入"GRUB for DOS"，FAT32文件系统。该U盘在老旧BIOS上成功启动WinPE，
现在想在VMware 15中启动WinPE。

最初没成功，提示:

"The physical disk is already in use"

在vmware.log中看到:

W32Util_DismountVolumes: Locking and dismounting volumes backed by a particular disk area (offset 0 size 15552479232) on PhysicalDrive2...
W32Util_DismountVolumes: Successfully locked volume \\?\Volume{b7943091-2ff4-11e9-8570-000000000a3a} on PhysicalDrive2.
W32Util_DismountVolumes: Successfully dismounted volume \\?\Volume{b7943091-2ff4-11e9-8570-000000000a3a} on PhysicalDrive2.
W32Util_DismountVolumes: CreateFileW1 failed on volume \\?\Volume{77e51b9a-39e7-11e7-9dbb-005056c00008}: 2
W32Util_CloseDismountHandle: Unlocking and closing handles for 1 volumes on PhysicalDrive2...
W32Util_CloseDismountHandle: Successfully unlocked volume \\?\Volume{b7943091-2ff4-11e9-8570-000000000a3a} on PhysicalDrive2.
DISKLIB-FLAT  : Open: Failed to dismount physical drive 2. Perhaps its volumes have open files on them?
DISKLIB-FLAT  : "\\.\PhysicalDrive2" : failed to open (73): .
DISKLIB-LINK  : "X:\VM\WinPE\WinPE.vmdk" : failed to open (The physical disk is already in use).
DISKLIB-CHAIN : "X:\VM\WinPE\WinPE.vmdk" : failed to open (The physical disk is already in use).
DISKLIB-LIB   : Failed to open 'X:\VM\WinPE\WinPE.vmdk' with flags 0xa The physical disk is already in use (73).
DISK: Cannot open disk 'X:\VM\WinPE\WinPE.vmdk': The physical disk is already in use (73).

在Process Explorer中未发现用户态进程使用U盘。

搜了一下，好像与OS、VMware都有关，比如VMware 8会碰上，VMware 7不会碰上，
再比如说Win7容易碰上。

最后试了如下步骤:

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a)

用diskmgmt.msc删除U盘盘符

"fsutil volume dismount x:"不适用于U盘，也不等价于"mountvol x:\ /D"，天晓
得干啥了。

b)

$ diskpart

DISKPART> automount disable
DISKPART> automount scrub
DISKPART> exit

或许"mountvol /n"也可以，未测试。

c)

重启Host(x64/Win7)

这一步很重要，之前做了步骤b之后没有重启Host，结果死活不成功。只需要重启这
一次，以后不再需要重启。

d)

插入U盘

diskmgmt.msc中U盘没有盘符，"VMware USB Arbitration Service"服务启用中，与
该服务无关。如果其他时间想在Host中使用U盘，用diskmgmt.msc手工分配盘符即可。

e)

打开VMware 15，用U盘成功启动WinPE
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在vmware.log中看到:

W32Util_DismountVolumes: Locking and dismounting volumes backed by a particular disk area (offset 0 size 7751073792) on PhysicalDrive2...
W32Util_DismountVolumes: Successfully locked volume \\?\Volume{ab1c3818-5e9d-11e9-b3ad-000000111111} on PhysicalDrive2.
W32Util_DismountVolumes: Successfully dismounted volume \\?\Volume{ab1c3818-5e9d-11e9-b3ad-000000111111} on PhysicalDrive2.
AIOWIN32C: '\\.\PhysicalDrive2' : Failed to issue ioctl 508040: The request is not supported (50).
OBJLIB-FILEBE : FileBEIoctl: ioctl operation failed on '\\.\PhysicalDrive2' : The request is not supported (3276802)
HOSTDISK-WIN32: Facts: Cap=15138816 Phys C/H/S=942/255/63 BIOS C/H/S=942/255/63 Adap=SCSI
DISKLIB-DSCPTR: Opened [0]: "\\.\PhysicalDrive2" 0 partitionUUID \\?\usbstor#disk&ven_kingston&prod_datatraveler_2.0&rev_pmap#6cf049e31fc2b0608993850a&0#{53f56307-b6bf-11d0-94f2-00a0c91efb8b} (0xa)
DISKLIB-LINK  : Opened 'X:\VM\WinPE\WinPE.vmdk' (0xa): fullDevice, 15138816 sectors / 7.2 GB.
DISKLIB-LIB   : Opened "X:\VM\WinPE\WinPE.vmdk" (flags 0xa, type fullDevice).
DISKLIB-LIB_MISC   : DiskLib_GetStorageBlockSizes: Failed to get storage block sizes, The virtual disk requires a feature not supported by this program.
DISK: Disk 'X:\VM\WinPE\WinPE.vmdk' has UUID '60 00 c2 93 88 a6 7e 42-05 57 55 76 e6 d6 89 ff'
DISK: OPEN 'X:\VM\WinPE\WinPE.vmdk' Geo (942/255/63) BIOS Geo (942/255/63)

本文所说的U盘就是普通U盘，没有动用量产工具模拟成光盘。如果你很顺利地在
VMware中用U盘成功启动Guest，就不必理会本文所述内容，如果你碰上
"The physical disk is already in use"，可以参照前文尝试解决。