Computer Boot is mess up after installing Windows 8 and switching back

gregrocker said:

The OS is installed on Disk0, booted into C as shown by the "Boot' flag on C. The System Reserved partition is booting the drive as shown by the "System Active" flags - meaning it is indeed an MBR disk with Legacy install.

The only problem I see is that the data partition D is RAW which means ruined. I would delete it in Disk Mgmt and then recreate it to see if it changes from RAW. If not run a Disk Check on it.

Let us know about this and any other issues.

I have already fixed, this is the current Diskmgmt.

imgur: the simple image sharer

I would have the OS hard drive in DISK0 position, or else when you reinstall or run Startup Repairs it may derail the System boot files to the other HD if it is in a preceding position and Primary.

Is there anything else?

gregrocker said:

I would have the OS hard drive in DISK0 position, or else when you reinstall or run Startup Repairs it may derail the System boot files to the other HD if it is in a preceding position and Primary.

Is there anything else?

Well How do you move the OS hard drive to disk0? would i have to reinstall again?

Thank you for the help everyone! especially gregrocker which provided me lots of solution! Thank you guys so much.