Dual Boot: Unable to format Disk 0 Drive

Discussion in 'Windows 7' started by los318, Nov 3, 2010.

  1. los318

    los318 MDL Novice

    Aug 25, 2009
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    Little history. I have two 500 Gig hard drives (no raid). The first (disk 0)i used for XP and it was my main OS. The 2nd drive (disk 1) i used for test Win7 Beta. Well i finally got a good copy of Win 7, reformatted disk 1 and loaded Windows 7 Home Preimum. I want to use that as my main drive but when i try to format disk 0 (xp drive) it wont let me know. When i pull up Computer Managment and check the drives i see this (sorry no screenshots) pulled from Windows 7 OS:

    Disk 0 Basic: Healthy (System, Active, Primary partition)
    Disk 1 Basic: Healthy (boot,page file, dump,Active, Primary partition)

    I'm assuming I cant format Disk 0 because its the system but I have Windows 7 installed to Disk 1, not 0. And just for laughs, i disabled Disk 0 last night and the computer wouldnt boot up with only Disk 1 "active". I knew how to fix it so Disk 0 is "active" again and i'm able to boot up again. But, i still cant understand how i'm able to Load Win7 OS into Disk 1 but it not show as the main system. Any idea's on how to fix this would be great! Thanks !!

    Carlos

    PS. The reason i'm wanting to wipe Disk 0 is to test other OS's with a clean disk.
     
  2. Phazor

    Phazor MDL Expert

    Sep 1, 2009
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    Probably the old MBR issue.

    Did you try removing the XP drive, booting the 7 DVD and doing the boot repair (or whatever it was called) ?

    Since the 7 drive is primary, active, and contains the bootfiles i have a feeling thats all it takes to fix the issue...
     
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  3. los318

    los318 MDL Novice

    Aug 25, 2009
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    That worked. I switched the cables around, rebooted, repaired the boot with my win 7 install disk and it booted right up. I was even able to format that drive in Win7 with no errors. Thanks!!