Como excluir arquivos * .vmdk?

Question

Não consigo excluir *.vmdk arquivos e relacionados no Mac OS X 10.6.8 com sudo rm :

$ sudo rm -rf /Volumes/Temp/vm/
rm: /Volumes/Temp/vm//MarukoVM/nvram: Read-only file system
rm: /Volumes/Temp/vm//MarukoVM/vmware.log: Read-only file system
rm: /Volumes/Temp/vm//MarukoVM/Windows XP Professional-f001.vmdk: Read-only file system
rm: /Volumes/Temp/vm//MarukoVM/Windows XP Professional-f002.vmdk: Read-only file system
rm: /Volumes/Temp/vm//MarukoVM/Windows XP Professional-f003.vmdk: Read-only file system
rm: /Volumes/Temp/vm//MarukoVM/Windows XP Professional.vmdk: Read-only file system
rm: /Volumes/Temp/vm//MarukoVM/Windows XP Professional.vmsd: Read-only file system
rm: /Volumes/Temp/vm//MarukoVM/Windows XP Professional.vmx: Read-only file system

Como deletá-los?