When trying to open a Windows7 VM along a running XP one I get the following:
PIIX3 cannot attach drive to the Secondary Master (VERR_SHARING_VIOLATION).
Unknown error creating VM (VERR_SHARING_VIOLATION).
Result Code:
NS_ERROR_FAILURE (0x80004005)
Component:
Console
Interface:
IConsole {e3c6d4a1-a935-47ca-b16d-f9e9c496e53e}
Both VM's use SATA disks.