Unable to launch old OS after installing a new one(dualboot)

gregrocker said:

If the stick has run Repairs successfully in the past, then fine. Is it the full installer or just Repair image?

You can try turning off Bitlocker.

Good quality CDs and DVD's are 5 for $2 on the rack at Walgreens, near the camera dept.

I followed the instructions here.It's a 165 MB file.

Startup Repair Log summary:
It performed many tests.All the tests were completed successfully and followed by Error code 0x0.
A boot status test was performed(shown at the bottom of the log and was marked as root cause) and the following sentence was seen under it.
"Boot status indicates that the OS booted successfully".

Check that you are repairing the correct Win7 from the list. Identify each by size or unique label if it exists.

gregrocker said:

Check that you are repairing the correct Win7 from the list. Identify each by size or unique label if it exists.

The name of the G partition OS is Windows 7 (old). Decryption is complete.I'm gonna run RE again...

Have you proceeded to the steps to attempt to recover G by marking it Active then running Startup Repair - Run 3 Separate Times?

Don't forget to backup image and files before getting into that.

I did change it to active.But it's still not working.What should I do now?Please tell me what I should do with EasyBCD.

How many times did you run Startup Repair after marking G Active? What does it report?

If it fails then you'll have to return the Active flag to System Reserved and run Startup Repairs again from DVD/CD until it starts on its own.

Then I would install EasyBCD 2.02, remove any entry for G which already exists, Add another to see if it will start this time. However if it G auto-Repairing at Startup it is unlikely that EasyBCD will solve the issue if Startup Repair cannot.

I ran it more than 3 times.Same results.

So where are the System Active flags now? Will C boot?

Install EasyBCD and Delete then Add G to the Dual Boot Menu on the Edit Boot Menu and Add OS tabs.

I can still boot into C.G is marked as active.Did everything as you said just now.Now when I select it,it says that winload.exe is corrupt and Windows cannot start.Insert the Windows 7 DVD and do a startup repair.

If G will not boot after being marked Active with three Startup Repairs run separately with reboots between each, then move the Active flag back to System Reserved and run Startup Repair until C starts up again.

You can also try booting into free Partition Wizard bootable CD, click on Disk to highlight it, then from Disk tab run Rebuild MBR to see if that will start G while it's marked Active, see if G will start. If not move Active flag back to Sys Reserved and try Rebuild MBR which may preclude the need to run 3 Startup Repairs to restart C.

I repeatedly told you this is a risky last resort and not guaranteed. Did you copy out your files first?