I previously installed Ubuntu on my MBP and ended up not liking it. So I removed the partition. I also had Windows 7 installed but removed that partition as well. Now GRUB is hanging on for dear life. How can I clean my MBP up? I am not liking the looks of disk1 at all. I want it to be like I never had any other partitions. Tyler@dhcp-218-096:~$ diskutil list /dev/disk0 #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *250.1 GB disk0 1: EFI 209.7 MB disk0s1 2: Apple_HFS Macintosh HD 249.6 GB disk0s2 /dev/disk1 #: TYPE NAME SIZE IDENTIFIER 0: FDisk_partition_scheme *4.0 GB disk1 1: Linux 3.8 GB disk1s1 2: Linux_Swap 193.2 MB disk1s5 P.S. I'd like to not have to reinstall Mac OS X. I doubt it matters in this case, but I've got OS X 10.6.4. And it looks like that disk1 might me recognizing that I've plugged a 4 GB bootable Linux flash drive.