[arch-general] talkingarch problems formatting partitions

Hi, I downloaded the talkingarch-20140203-dual.iso yesterday and want to install it onto my desktop system. I booted into the talkingarchlinux system no problems, and used parted to create the partitions on my hard disk. When I go to format the partitions, as soon as I enter the command: # mkfs -t ext4 /dev/sda1 The entire system locks up. I have to do a hard reboot of the system to get anything working again. Any idea why this might be happening?