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I ran into a problem today. I have a HP pavillion dm4 laptop and it was running windows 7. I wanted to install windows 8.1 and used a bootable usb drive. I did custom install and formatted and deleted one partition. But unfortunately the drive was Dynamic and every other partitions were merged into single one. This not the problem coz I think I can recover the data and I have most important data backuped. The problem is that the OS cannot be installed. It shows the following error message:

Windows cannot be installed to this disk. This computer's hardware may not support booting to this disk. Ensure the disk's controller is enabled in the computer's BIOS menu.

I searched for the problem and were some suggestions like setting on the AHCI mode on BIOS. But there is no option for SATA mode in my BIOS configuration. I am in deep trouble.
Please help me.
Thank you.

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There a reason you didn't do a direct upgrade to Windows 8 then upgrade to Windows 8.1? So you understand the type of upgrade you attempted only transfered your personal files instead your applications and personal settings. –  Ramhound Oct 1 '13 at 17:54
    
Sounds like you switched your partition types. You need to verify or figure out if you were using GPT partitions or MBR. A full model number is required to help you. pavillion dm4 isn't specific enough. –  Ramhound Oct 1 '13 at 18:06
    
So you only have a single disk, and you've blown away all partitions? Are you sure you're not picking the USB drive you're trying to install from? :) –  Ƭᴇcʜιᴇ007 Oct 1 '13 at 18:08
    
@techie007 - You bring up a good point. He could be selecting the wrong volume. –  Ramhound Oct 1 '13 at 18:12
    
@techie007 No the size is showing about 500 GB. This is where I want to install. The USB drive has only 8 GB space. –  Tushar Khatiwada Oct 1 '13 at 18:12

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