Can not reinstall Windows7 (using Boot camp) after i've removed Bootcamp partition via Disk Utility I've removed Windows partition (might be label as Bootcamp) using Disk Utility. and after that i found that i made some mistake because in actually i should remove it via Bootcamp Assistant. What's wrong with me now?



I couldn't find installation menu on Bootcamp there's only remove menu. In my understanding i think because Bootcamp now still remember the starting file or boot file of Windows.

Additional Information from diskutil list command:

/dev/disk0
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *500.1 GB   disk0
   1:                        EFI EFI                     209.7 MB   disk0s1
   2:                  Apple_HFS Macintosh HD            300.0 GB   disk0s2
   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s5
   4:       Microsoft Basic Data WINDOWS_HD              199.2 GB   disk0s4


NOTE WINDOWS_HD i just create it from Disk Utility program there is nothing inside just blank space no Windows.
OK, now i got my installation screen back



How could i solve this problem?

I just remove a blank NTFS partition (label as WINDOWS_HD) and leave it be a free space. That's all.