Windows 7 - Upgrading my hard drive

Hi,
Well my problem is that I first installed Windows 7 onto a small GB hard drive and now whenever I install a new program my computer slows down noticeably. So i went out and bought a 1TB Seagate Barracuda. i then cloned over my old hard drive. What i would like to know now is how to make that new drive the system and boot disk so that I don't get the error message "ntdlr is missing"

Startup Repair

It may help .

BTW ... have you included the system reserved partition in your clone ?

hello and welcome to the forums

To Rebuild BCD
======================================================
1. Put the Windows 7 installation disc in the disc drive, and then start the computer.
2. Press a key when the message indicating "Press any key to boot from CD or DVD …". appears.
3. Select a language, a time, a currency, and a keyboard or another input method, and then click Next.
4. Click Repair your computer.
5. Click the operating system that you want to repair, and then click Next.
6. In the System Recovery Options dialog box, click Command Prompt.
7. Type Bootrec /RebuildBcd , and then press ENTER.


OR



Use the Windows Recovery Environment (WinRE) to run System Restore (If System Restore is enabled on your computer)
===========================
1. Insert the Windows 7 installation disc into the disc drive, and then start the computer.
2. Press a key when the message indicating "Press any key to boot from CD or DVD …". appears.
3. Select a language, a time and currency, and a keyboard or input method, and then click Next.
4. Click Repair your computer.
5. In the System Recovery Options dialog box, choose the drive of your Windows installation and click Next
6. At the System Recovery Options Dialog Box, click on System Restore.
7. Follow the System Restore Wizard instruction and choose the appropriate restore point.
8. Click Finish to restore the system.

Yeh i dont really know what that is

@brianzion will the first one delete any of my files? I'm not great with computers.

im just checking for you the best thing to do is back up your important files if you can have you unplugged the old drive you cloned from?

Well whenever i unplug my old hard drive it pops up with the error message ntdlr is missing

i would use the second option first Use the Windows Recovery Environment

can you leave the old drive plugged in and reformat it? and then use that disc for all your important files then run second option? windows thinks its a bootable drive so if you could wipe the disc that should help option 2

i have asked my very good friend carlTR6 for advice on this thread ok