Option

Description

Source

Use this field to specify the virtual hard disk file (.hdd) that emulates the virtual machine hard disk:

• To use the Boot Camp partition as the virtual machine hard disk, select the Boot Camp partition name from the list.
• To use a virtual hard disk file as the virtual machine hard disk, choose the virtual hard disk file from the list, or click Choose an image file and specify the path to the desired image file (.hdd).

Properties

Click this button to edit the hard disk properties:

• Size. Use this field or slider to change the disk size.
• Expanding disk. Deselect this option to convert the disk format from expanding to plain.
• Split the disk image into 2 GB files. Select this option if you want the virtual hard disk to be split.

Location

Use this field to specify the type of interface for connecting the hard disk. This option is for advanced users only.

Enable TRIM

In most cases, the space that the virtual machine takes up on your hard disk expands as you add files and other data, but isn't reduced when you delete data. To set Parallels Desktop to automatically reduce disk space, select Enable TRIM. This option may affect performance on HDD (not SSD) disks.

Sync free space with Mac

When this option is selected, Windows shows the same amount of free disk space as in macOS.