Grub install fails on Waldorf install to USB flash drive

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http://crunchbanglinux.org – Hi guys,I've been trying to install the new Waldorf image to a flash drive, but it always fails when installing the boot loader.As I don't have that much experience and I'm afraid to affect the OS already installed I'm installing it thorugh a virtual environment (VMWare), basically by booting the virtual machine with the waldorf image while having the flash drive connected and choosing to format and install to that when those options show up.But, as the topic suggests, every time I reach the boot loader install screen and choose to install grub, it fails, just saying that i (HowTos)