About how to change the system startup Option

I used to be a dual-System Windows 7 + Ubuntu 11.10. Later I uninstalled Ubuntu11.10 and re-installed Ubuntu 12.04. As a result, the problem occurred. when the system was started, three options were displayed, one for Windows 7 and two for Ubuntu, one of them is useless. After selecting it, an error will be prompted and cannot be started. to delete this system startup Item, I downloaded BCDedit because there are two Ubuntu boot items and the result is deleted incorrectly, in the end, only all the items can be deleted. As a result, I have installed Ubuntu 12.04. How can I add this startup item? I want to uninstall and reinstall it, and it will appear in the startup Item again. The result is that the uninstallation is located, saying that no file is found (that is, the file where BCDID is located at the time of installation). I checked it again, my Ubuntu environment.

The following is my operation www.2cto.com Because Ubuntu has been installed, so there will be "wubildr" and "wubildr. run "cmd" in the two Ubuntu startup files to enter the command line (3efd3a4a-a452-11de-ba3a-870b5a0c554f is my Ubuntu BCDID, so you do not need to create it again) 1. bcdedit/create/d "linux"/application bootsector (a bcdid will be created after this step) 2. bcdedit/set {3efd3a4a-a452-11de-ba3a-870b5a0c554f} device partition = c: 3. bcdedit/set {3efd3a4a-a452-11de-ba3a-870b5a0c554f} path \ wubildr. mbr 4, bcdedit/set {3efd3a4a-a452-11de-ba3a-870b5a0c554f} description "Ubuntu" 5, bcdedit/displayorder {region}/addlast restart select "Ubuntu" to enter the author Arthur ur_wen