You must have another function key in order to boot-up from the CD-ROM in my Dell Workstation is F2 (to enter Bios) and F12 (To access CD-ROM) check your manual or during boot-up and see if the screen.
You must have the option, otherwise how can you get into Bios or how did you install the first Windows on C:
Let me know, if not, there is another way you can install a dual Windows XP from within Windows:
To start a second Windows install from Windows without the F12 boot-sequence:
Insert the Windows CD in the CD-ROM from the desktop. The CD will autorun, else go to My Computer, the CD-ROM drive and double click on the "SETUP.EXE" file. The install will begin.
The "WELCOME" screen will appear first, select "INSTALL WINDOWS XP" by clicking on it with the mouse. Windows will now gather some information from your computer.
Now you will be asked which type of install you want. Select "NEW INSTALLATION", click on "NEXT" to continue.
Now the License Agreement, read it and click on "I ACCEPT" and click on "NEXT" to continue.
Now it is time for your product key. The product key will be on the packaging that XP was supplied with. It is 25 digits long. Some OEM computers will have a sticker on the side or back with your product key. Input the key and press "NEXT".
Now the Setup Options: Click on Advance Options, and select the box where it states you want to control were windows will install, and if you want, you can check the box that copies the installation program to you hard drive: This option will copy the CD-Rom files to your C: drive and can speed up the installation. It’s optional, otherwise during re-boot the program will continue to install from the CD-ROM.
If you need a Magnifier or the Microsoft Narrator to assist install, select now, else click OK to continue. Now change the default language settings if you need to. Click "NEXT" to continue.
Now you have the option to download Updated Setup files, if you want to and you are connected to the net, then click "YES" and press "NEXT". This is not necessary, so if you want to cut the install time, then click "NO" and press "NEXT".
Windows will now prepare the installation. If you selected “copy installation files to the hard drive, this process will begin, and otherwise Setup will now prepare to restart the computer.
Boot will recognize that the XP installation on the CD or the hard drive depending on your original selection if you DO NOT press any keys, let setup bypass the CD boot.
Setup will now inspect your computer hardware and configuration.
Setup now prepares your computer for install.
From this menu press "ENTER" to begin the install.
Windows XP License agreements, scroll down and press “F8� to continue.
Your previous install will be located in C: press "ESC" to continue the parallel install in F: drive. Now use the up and down arrow keys to select the partition you want to install into: Select F:
Press "ENTER" once selected to continue.
Windows will now ask you to confirm the install. If you are satisfied with your decision then press "C". Now you will be asked if you wish to format the drive, select "Format the partition using the NTFS file system (Quick)� and press "ENTER" and then setup will begin to copy files. Setup now initializes the Windows XP configuration.
Continue the installation normally and when finished and boot-up the computer screen will display the dual operating system entries.