When you map a virtual disk and its associated volume to a drive on the host system, you can connect to the virtual disk without opening a virtual machine.
After you map the virtual disk to a drive on the host system, you cannot power on any virtual machine that uses the disk until you disconnect the disk from the host system.
If you mount a virtual disk that has a snapshot and then write to the disk, you can irreparably damage a snapshot or linked clone created from the virtual machine.
Prerequisites
Power off all virtual machines that use the virtual disk.
Verify that the virtual disk (.vmdk) files on the virtual disk are not compressed and do not have read-only permissions.
On a Windows host, verify that the volume is formatted with FAT (12/16/32) or NTFS. Only FAT (12/16/32) and NTFS formatting is supported. If the virtual disk has mixed partitions, for example, one partition is formatted with a Linux operating system and another partition is formatted with a Windows operating system, you can map the Windows partition only.
Verify that the virtual disk is unencrypted. You cannot map or mount encrypted disks.