Need Help on Boot sector

[ADAMEE]

Hello, can anyone advice me on the steps to set c: parition as the active/primary boot sector, please ?

Background:
1 My notebook single hardisk is partition into 2 - C: and D:
2 Windows XP home edition;
3 It was booted with C: as the primary,active, boot partition. OS also installed in C:
4 During one re-setup with Windows XP setup disk, I deleted the C: partition, re-create the partition and formatted it. I did not pay attention - somehow the primary active was shifted to D:

After re-installing, during one file maintenance, I found boot.ini in D: and thought it dun serve any purpose. I removed it and my notebook cannot boot !

Now I have restored the boot.ini in D:. But seeking ways to re-instate C: as the primary active boot paritition.

More info :
With diskpart (Microsoft DiskPart version 5.1.3565) :
=====================================
DISKPART> list disk

Disk ### Status Size Free Dyn Gpt
-------- ---------- ------- ------- --- ---
Disk 0 Online 112 GB 0 B

DISKPART> select disk 0

Disk 0 is now the selected disk.

DISKPART> list partition

Partition ### Type Size Offset
------------- ---------------- ------- -------
Partition 1 Extended 29 GB 8033 KB
Partition 2 Logical 29 GB 8064 KB
Partition 3 Primary 82 GB 29 GB

=====================================
aa. Why does disk part shows 2 partition of 29GB when physically for the same C-parition (this is the OS partiton) ? It is a HP notebook.

bb. I have bootsector.exe ready. Just not sure how to use. Would you list down the step for me.

Please help

[Enriquee]

Insert the installation CD and restart your PC. Wait a moment while loading the installation press R. A list of Windows already installed will appear, choose the number that corresponds to the system you want to repair. Reinstalling a Windows system using recovery manager and then repair your boot ini file. It can be done by using the recovery console.

[chris12345]

Boot c always from the cd and after the installation you have to change the boot sequence in which you have to bot it from hard drive.These options come in F2 setup.