I'm trying to create a Windows partition using Boot Camp. An error comes up telling me that I need to reformat my current partition(s) into one single partition. However, it's already formatted in the correct format, and is already a single partition.

Question

As made clear in the title:
I'm trying to create a Windows partition using Boot Camp. An error comes up telling me that I need to reformat my current partition(s) into one single partition. However, it's already formatted in the correct format, and is already a single partition.
My computer recently had a kernel panic, which apparently the corruption was in the system and needed to be erased and re-installed. I have a complete back-up using an external hard drive, and I am definitely not willing to do another one of those to reformat a partition that is already singular. I restarted the computer after ejecting my back-up, and after turning off time machine (thinking that boot camp was recognizing it as a secondary partition), however the error still occurs.
Is there any way to get around this?

Answer 1

diskutil list:
/dev/disk0
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *750.2 GB   disk0
   1:                        EFI                         209.7 MB   disk0s1
   2:                  Apple_HFS Macintosh HD            749.3 GB   disk0s2
   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3
/dev/disk1
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:                            Windows7               *2.9 GB     disk1
diskutil cs list:
No CoreStorage logical volume groups found
mount:
/dev/disk0s2 on / (hfs, local, journaled)
devfs on /dev (devfs, local, nobrowse)
map -hosts on /net (autofs, nosuid, automounted, nobrowse)
map auto_home on /home (autofs, automounted, nobrowse)
/dev/disk1 on /Volumes/Windows7 (udf, local, nodev, nosuid, read-only, noowners)
From my very basic knowledge - it still looks as if there is only one partition (not including the windows 7 CD necessary to install the windows partition).