Restored disk image won't start, hangs on Classpnp.sys, restored from multiboot to singleboot.
Hello, this is the situation: I installed Windows 7/64 alongside XP as a test. Now I wanted to move the Windows 7 as a single OS on my computer. Windows 7 resides on a HD of it's own which has 50 gig OS partition and 950 gig data partition. I cloned the Windows 7 HD to an empty drive using Paragon harddisk manager 2010. After that I connected the new cloned Windows 7 drive alone to my computer. Using Windows 7 install DVD I made a new boot data storage and all that to get it to boot. During boot, an error message saying "autochk program not found, skipping autocheck" appears. After that it loads files up untill the Classpnp.sys and then crashes into the blue screen. I have tried the startup repair from Windows 7 installation DVD a few times, no effect. I don't have all the harddrives connected which I had during making the backup, but I don't think a missing drive could crash it like that?
August 1st, 2010 7:41pm

It's got something to do with write caching and your HD controller. Is your new hard drive a different type than your old one? Have you moved from EDIE to SATA, or changed the way your computer detects SATA drives in the BIOS (from ACHI to See as IDE?) If not, can you through your new HD into another machine and test it?
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August 2nd, 2010 2:20am

Hi Henson and thank you for your reply. Both drives were SATA drives, altho the new disk is a WD10EARS advanced format drive. The drive has not been aligned using WD align tool tho, but I imagine not doing so should only hinder performance? I haven't done any changes to BIOS drive settings either. I suppose I could give it a try on another machine this next weekend. The have the Asus P5B motherboard and have intel INF's installed. Now that you mentioned disk settings, I'm going to do a tour around the BIOS drive settings to see if something funny's been going on there.
August 3rd, 2010 12:39am

It is possible the cloned Windows 7 drive was damaged or the cloned imaged is corrupted. Also, you can try the suggestions in this knowledge base (KB) article to repair startup issues: How to use the Bootrec.exe tool in the Windows Recovery Environment to troubleshoot and repair startup issues in Windows Here is another article you can refer to: Repair the MBR to restore Windows 7 to your Multiboot Options Hope this helps. Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.
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August 4th, 2010 9:26am

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