[Trisquel-users] Re : Problem With Folder Permissions

[magicbanana]

Are VMDK files supposed to be directly executed? I doubt so. Besides, VMDK  
files are for VMWare, which is proprietary software. You can convert them to  
VDI files for VirtualBox, which is mainly free software (entirely if you  
install it from Trisquel's repository).

Anyway, your error was to omit a space between 777 and /home/john/virtualbox  
and to write /Home instead of /home. But, again, there is no notion of  
permission on FAT filesystems. That probably explain why you cannot change  
them.