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Disclaimer: I did post this in the Windows 7 forum, I hope it doesn't break the rules to post it in both since it falls under both topics. Thanks for your understanding.

Hi, hopefully someone can help me with this, since there seems to be dozens of threads similar to my situation yet unintelligible to me.

So I recently did a fresh install of Windows 7 Professional x64, and in the process decided I would install Ubuntu to dual boot on the computer. The machine uses two 250GB drives in a RAID 0 configuration, so during the Windows 7 install I gave it a 400 GB partition, leaving about 70 GB free space to install Ubuntu. Got Windows up and running, no problems, had all my data back in place and was ready to tackle Ubuntu.

I didn't have any major issues on the Ubuntu installation, either. I picked the free partition for the OS and proceeded to install. I was up and running soon after, and assumed everything was a-o-k.

However, when I rebooted I noticed that the boot manager was different that what I'd seen when dual booting two Microsoft OS'es, which worried me. (I now understand that this is GRUB) Far more frightening was when I selected the W7 OS from the list, only to have the computer crash in the middle of booting up. During the loading MS logo, I catch a brief glimpse of a BSOD, followed by my monitor going to sleep and my computer's fan continuing to run but otherwise remaining inert. Safe Mode does the same thing, crashing without a visible error on boot and with a brief flash of BSOD.

Startup Repair was no help, since this was a new installation, and I stupidly assumed that I always had the out of reformatting and doing it all again, I didn't make any kind of system backup disk. If I choose automatic repair, it simply fails, with the details making it look like the process was a complete non starter. Finally, the program itself tells me that it can't find any hard drive in my computer.

The invisible hard drive has also prevented me from reinstalling Vista (I have a W7 upgrade disk, Vista full version) from scratch, as well as from using the repair feature on my W7 upgrade disk. To remedy this, I tried pointing to the original manufacturer's driver disk for hard drive drivers (it says it cannot find signed drivers) and I tried downloading the SATA drivers directly from the same website and pointing to that .exe (same error, says they are not valid signed drivers).

At this point, I'd love to find out I need to modify GRUB in some way, as I've seen suggested in one thread found via google. I know the data is all there, I can see it from the working-fine Ubuntu install. On the flip side, I'm not opposed to doing a complete reformat and fresh install of W7, which is my priority OS since this is a gaming computer for the most part and I just want to learn Linux for fun. However, without knowing how to make Windows Installer detect my hdd, I don't even know how to do that.

If anyone has any advice, I'm incredibly desperate. Step by step instructions would be best, to be safe, but at this point I'll take anything I can get. Please offer any suggestion and I'll reply with requested info asap.

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Last Post by jmoran19
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Just a few updates for anyone who wants to chime in...

GParted says that the Windows partition still has the boot flag attached to it.

When booting W7 in safe mode, the file it appears to hang on when loading is C:\Windows\system32\DRIVERS\disk.sys.

Any thoughts would be much appreciated!

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