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Volume Disk not showing in disk managment.
I was trying to dual boot win 8 and win7(was already installed) on my laptop.During installation win8 was giving an error,that win could not update the computer's boot configuration.(See attached pic )
I googled this error and came across this post.
Boot from 7 or 8 DVD and goto Repair console > Command Prompt (Hit enter after each line)
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diskpart
list disk
select volume x (x = being the volume number of your HDD)
clean
create partition primary
active
format fs=ntfs quick
assign
exit
Reboot and try setup again (I use this for USB drives, but they are not partitioned, I imagine this will kill all partitions on the disk and create just one new one)
After doing all this I was able to install window 8 but my 2 hard disk partition are not showing.My total hard disk is of 300 GB,but now only a single partition of 149 GB is showing.The remaining hard is not visible anywhere,not in disk management, and not even in ease-us disk partition.