How to change drive letter in XP when dual boot with 7?

Yes, Greg,

You could boot the 7 dvd to system recovery options command promt.

Then use diskpart to remove the 100mb partition and mark the 7 partition Active.

Then run startup repair 3 times.

Boot into 7, and add XP entries to the new bcd store using bcdedit.

Any backup image you already have won't include those changes - so make another when done.

justi said:

But even if I made it back to xp and use easybcd to fix the dual boot,the drive letter in xp is still messing,isn't it?

Correct. It will still be D:

SIW2 said:

Yes, Greg,

You could boot the 7 dvd to system recovery options command promt.

Then use diskpart to remove the 100mb partition and mark the 7 partition Active.

Then run startup repair 3 times.

Boot into 7, and add XP entries to the new bcd store using bcdedit.

Any backup image you already have won't include those changes - so make another when done.

Bravo for the speedy solution to such an complex problem!

I first used diskpart recently to remove an Acer Recovery Partition that wouldn't come out using anything else. Google for the commands; mine had "override" in it.

sup3rsprt said:

justi said:

But even if I made it back to xp and use easybcd to fix the dual boot,the drive letter in xp is still messing,isn't it?

Correct. It will still be D:

What if I followed SIW2 's method?
delete the 100m partition,mark 7 active,ghost xp back?

SIW2's method was to get rid of the drive letter on the system boot partition. But Windows XP itself will still be tied to the D: drive.

And now there is nothing I can do except for using the image to recover xp?

I think the only reliable way to change Windows XP drive letter is to reinstall it.

But if you're not having issues with it being on D: I wouldn't worry about it.

Tews said:

Have you read Brinks tutorial??? Read it -=> Here

Yes,I followed the tutorial.
And dual boot is working.
The problem is the drive letters are messing in xp.
I tried to fix it but now I can't logon to xp.

justi said:

I tried to fix it but now I can't logon to xp.

What did you do that broke XP?

You might want to attach a screenshot of Disk Management, so we can have a look