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Windows 7: Fast boot up when 2nd HDD is disconnected.

20 Dec 2012   #11
Microsoft MVP


If you're finished with the OS on Disk2 or have already deleted it, then yes wiping the HD the boot code with Diskpart Clean Command can sometimes resolve it interfering with another disks' boot. It's also a good practice since you dont need it to be bootable any longer and the only way to fully remove the boot code is wiping it.

My System SpecsSystem Spec
21 Dec 2012   #12

Win 7 Pro 64-bit 7601

something I did in the past was just wiping the MBR (master boot record), which is one of the steps of booting. Disks with a clean MBR won't boot, but are easy to fix if you have an installation disk/thumbdrive in case you want to boot them again. I don't know if in your case will be equivalent to havin the drive disconnected (or fully wiped), but it's something you can try before nuking everything with the Clean Everything as gregrocker suggested.

This thread contains links to help you delete the MBR, this tutorial tells you how to restore the MBR to make the disk bootable again.
My System SpecsSystem Spec
21 Dec 2012   #13
Microsoft MVP


Diskpart Clean Command wipes the boot sector which clears all boot code which can interfere. There will then be no MBR until reinstall.
My System SpecsSystem Spec

24 Dec 2012   #14

Windows 7 Home Premium 64bit

Sorry for a very late reply.I'll try to do it after backing up all my data :)
My System SpecsSystem Spec

 Fast boot up when 2nd HDD is disconnected.

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