Remove system partition of old install


  1. Posts : 3
    Windows 7 Ultimate x86
       #1

    Remove system partition of old install


    Hi everyone,

    I have 2 hard drives in my computer, a 160GB and a 500GB. I wanted to transfer my windows install from the 160GB to the new 500GB drive, but I wanted to start fresh anyways, so I backed up all my important stuff, and did a clean install on to the 500GB hard drive, and set that as the primary boot device in my BIOS.

    Now what I would like to do is format the other drive with the old install, so I can use it for backup/storage. The problem is Disk Management won't let me delete it because it is listed as "System, Active, Primary Partition". I figured this was because it is active, so I tried deleting it by booting from a GParted live cd, and deleted the partition. This was bad, as it seemed to mess up my MBR (perhaps for obvious reasons?).

    So basically, I would like to know the best and safest method for doing this, preferably without any paid software.

    Thanks!
      My Computer

  2.    #2

    Please post back a screenshot of your full Disk management drive map and listings, using Snipping Tool in Start Menu - attach file using Paper Clip in Reply Box.

    If you kept the old OS HD plugged during the new Install, chances are the System Active boot files for the new install were written there. We'll need to look this over and give you the steps to correctly remove the old OS.

    Be sure to tell us what is located where, and maximize the Disk mgmt output so we can see everything.,
      My Computer


  3. Posts : 3
    Windows 7 Ultimate x86
    Thread Starter
       #3

    Thanks for the fast reply!

    Here's the capture. The new OS installation is on disk1. The one to get rid of is on disk0. disk2 is just storage, not related to this problem.

    Hope this helps!
    Attached Thumbnails Attached Thumbnails Remove system partition of old install-capture.png  
      My Computer

  4.    #4

    As suspected because you kept the old OS HD plugged in during install, the new install put its boot files (System Active) on the old partition.

    To correct this, mark the new Win7 partition Active, then mark the old Win7 partition Inactive using Diskpart from this tutorial: Partition - Mark as Active

    Power Down to Disconnect the old Win7 HD to make sure it doesn't interfere, swap its cable to new Win7 HD or set it as first HD to boot in BIOS setup (after DVD drive). Boot the Win7 DVD Repair console or Repair CD, accept any offered Repair, when it doesn't restart boot back into DVD Repair, click through to Recovery Tools list to run Startup Repair up to 3 separate times with reboots to write the System MBR to Win7: Startup Repair - Run 3 Separate Times

    After the new Win7 starts up, again power down to plug back in the old Win7 HD to clean it using Diskpart then repartition in Disk Mgmt: Disk - Clean and Clean All with Diskpart Command

    If you'd prefer to have a graphical interface rather than using Diskpart to mark Active/Inactive, wipe the old HD and repartition, use free Partition Wizard bootable CD: Free Download Magic Partition Manager Software - Partition Wizard Online
      My Computer


  5. Posts : 3
    Windows 7 Ultimate x86
    Thread Starter
       #5

    Thanks!

    This solution worked great, other than some minor self-induced errors (like unplugging the wrong drive )

    Thanks for your help!
      My Computer


 

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