I have a dual boot on seperate hds vista prem and xp home. They work just fine except they show up as different drive letters in each os. c is c on both os but g which is partitioned to hold xp shows up as g and h in vista but d and i in xp. and my dvd and cd letters are different depending which os you are looking from. I tried to change them but the letter I want to use are unavailable. Can anyone tell me what is going on here. They both work just fine but I am thinking it might come back later to bite me. Any info would be appreciated. I tried to add a partition to c drive to put them both there but when I use the shrink command in vista it only gives me a few gigs because of page file and snapshot files are unmovable so it stops where they begin. ADVICE PLEASE......Not desperate but very curious

The drive letters are not available because they are already in use. Move the devices occupying those drive letters to something else, THEN attempt to change those to fit what you want. TECH-NO-LOGICAL ROMANCE! http://www.homestarrunner.com/tgs12.html

I think changing the drive letters is going to mess up the registration of files that you have installed under their present drive letters. Sometimes I think I understand everything, then I regain consciousness

Let me explain further when I am booted in vista the drive that I partioned that holds both vista and xp is G and the partion with xp on it is H my other hd is I my mem stick is J my cd drive is D and my dvd is E but when I am booted to xp the drive I partioned to hold both os's is D and the partion is I other hd is E mem stick is F cd drive is G and dvd is H. See my delimina ? I want to change the drives to match and I tried to chage D and I in xp to G and H and change cd to something else but I can't do it. When you use the disk managment it will fix any paths when you change the drive letters so the programs will still work. I just do not understand why they are different from each side. Shed some light if you know.

I don't intend this to sound mean or insulting, but general rule of thumb for me is I don't respond to posts that give me a headache to understand due to run on sentences, lack of punctuation, really bad grammar, etc. Help me to help you! "Enough, enough bowing down to disillusion! Hats off & applause to rogues & evolution! The ripple effect is too good not to mention. If you’re not affected, you’re not paying attention!"

I remember seeing something like that also on a install of a dual boot. Since it didn't bother me I didn't waste time on it. There would be a few reasons that would prevent a drive letter to be assigned. One is that the drive letter is being used either as a hard link to a drive or something such as subst or other drive gizmo's or even an order of loading drivers or irq's or memory regions. Might even be some legacy issues or bios oddities. I guess it could even be some dynamic vs basic disk issue but I can't see how really. There are some rules for how a usb device decides on how to keep or try to keep the same drive letter as when it was first plugged in. I guess that would only be a slim chance that is causing it. For the most part on a clean install you should be able to assign most drives a new letter without any registry issues since each install is based on C:. If you change the letter after any registered application you may have to either edit some stuff or re-install the app. Might look at some other posts. Seems that vista locks the xp partiton and that bumps stuff a bit too. I read it wrong and answer it wrong too. So get off my case you goober.

Hi, I have an issue in installing XP as a dual boot with vista home premium. I'm getting the following error 'Stop c0000021 unknown hard error \SystemRoot\System32\ntdll.dll'.I'm using 220G SATA HDD and I have a primary partition for vista.can anyone please help me what is the problem? Thanks in advance. Thanks & Regards, Karthik.