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My computer is currently set up to dual boot between Windows 7 and Windows XP. I mainly use the XP partition as storage, while I run the Windows 7 partition most of the time. The version of Windows 7 that is currently installed is an RC version (Build 7127).

I recently decided that it was time to upgrade to the full version of Windows 7 (32-bit, to keep things simple). The operating system installed with no apparent errors, until I tried selecting Windows 7 from the Windows Boot Manager at start-up. The Windows XP partition (listed as Earlier Version of Windows) still works, but the Windows 7 partition gives an error (Status: 0xc0000225). The info it gives is: "The boot selection failed because a required device is inaccessible". The given error has something to do with asking me to unplug anything I had recently plugged into the computer (USB device/MP3 player), but I haven't plugged anything in, so that led me to believe it was a driver problem. However, it seems odd that the RC version of Windows 7 works, while the final version does not. So, I re-installed the RC version so I could use the computer again (the XP partition has driver problems that cause Very strange errors on the internet, so I prefer to not use it, but don't look into those errors too much... I only use that partition for storage now)

I tried reinstalling multiple times, and I tried using the Startup Recovery tool that's on the installation disk, but it couldn't detect any problems. Also, I tried running "chkdsk c: /r" through the command prompt on the disk, which also had no effect.

The RC version, which I've been running for something like 9 months now, has never given me any problems, but the final version just won't install properly it seems.

All help is appreciated

Thanks in advance,
Driger1592
 

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Bump ~ All ideas are welcome. I think I'll be formatting once more today (using GParted) and if that fails, I'm backing everything up, formatting the entire drive, and I'll see if it works with a freshly formatted drive. If it's still not working then, and I think that's likely, then I'll still need help.

So, any ideas are entirely welcome and all help is appreciated!
 

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When you went to install the RTM version of W7 were you sure that it was directed at the RC version of W7?

If so it it could be that a full install will be the thing to do.

I did notice that you mentioned that you ran chkdsk c: /r
If the computer came with XP it is generally on c: and your newer install would possibly be on d:.
check your syntax on that matter.
 

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I did a clean install of the RTM version (deleted the partition with the RC version on it, and replaced it with a new partition for the RTM version). I'm not sure what you mean by full install? I've just backed up all of my data and I'm going to try a clean install of both XP and Windows 7 (deleting both partitions, installing XP first, followed by Windows 7 RTM). If that doesn't work, I'll try using just one partition with Windows 7.

With chkdsk, I actually ran it on both the C: and D:. Judging by the content of the runs, C: was the one with 7 on it. D: had far more files to run through. Considering my XP partition had something like 250gb of data on it, while the Win 7 install had next to nothing, I'd say 7 was running as the C:.

All of your help is definitely appreciated! :) I'll post back after I'm done with these OS installs
 

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I installed Windows 7, and everything worked well this time.

I understand that it's a bit backwards from what is normal, but I installed Windows XP after I installed 7. The XP install went fine, but I had to boot back into the 7 disc and use the startup repair on the disk to allow my computer to boot into Windows 7 again. After that, I followed the steps found here:

http://www.kombitz.com/2009/01/13/how-to-add-windows-xp-to-windows-7-boot-manager/

Which were supposed to add Windows XP to the boot manager. Now, it did that, but Windows XP won't boot. Would I be better off uninstalling Windows 7 and XP and doing it in the correct order, or is there a way to get the dual boot working correctly in my current situation?
 

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The easiest thing to do is get a copy of easy bcd and make the settings with it.
Doing it with bcdedit is not an easy thing to do and even harder to explain correctly.
 
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