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Win XP 64 in IDE Compatibility Mode

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MikalE
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Win XP 64 in IDE Compatibility Mode

#1 Post by MikalE » Thu Feb 14, 2019 11:03 pm

I apparently didn't do enough research before attempting to load XP to a second hard drive for a dual boot dual drive system along with Win 7.

Now that I changed the AHCI mode to compatibility mode I am once again installing Win XP on the second drive.

My question is, does this mode affect Win 7 drive access speeds or time? Will Windows 7 even boot in this mode? I'm going to search for XP AHCI Mode compatible drivers if this installation completes successfully.
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Re: Win XP 64 in IDE Compatibility Mode

#2 Post by Thinkpad4by3 » Fri Feb 15, 2019 12:28 am

Once your in compatibility mode...you've essentially installed an IDE drive with an IDE controller. That's what is recognized by the OS, that's the speed it will run at. If you have an AHCI install of 7 and switch to compatibility....likely you will run into issues.

Also I had a T60p with WinXP x64 and it was running in AHCI mode and I see no reason why XP x64 cannot be put on an AHCI machine. Consider getting a different Thinkpad for this project of yours.
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Re: Win XP 64 in IDE Compatibility Mode

#3 Post by axur-delmeria » Fri Feb 15, 2019 12:43 am

If you installed Win 7 in AHCI mode, then it will fail to boot in IDE mode.

There's a fix, but it involves editing the registry.
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Re: Win XP 64 in IDE Compatibility Mode

#4 Post by Screamer » Fri Feb 15, 2019 1:23 am

MikalE wrote:
Thu Feb 14, 2019 11:03 pm
My question is, does this mode affect Win 7 drive access speeds or time?
Access speeds or access times? I doubt so, because the interface only affects the maximum transfer rate. Not too much of a problem to deal with though, if you are using hard drives in your laptop.
MikalE wrote:
Thu Feb 14, 2019 11:03 pm
I'm going to search for XP AHCI Mode compatible drivers if this installation completes successfully.
Could this be what you were thinking of? It is the latest 64-bit Windows XP/Vista/7 AHCI controller driver, though I am not sure if it does support your laptop.

My T510 worked fine with that driver, as far as I can recall.

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Re: Win XP 64 in IDE Compatibility Mode

#5 Post by MikalE » Fri Feb 15, 2019 2:54 am

Well that didn't turn out too well.

I did not find out that EasyBCD is not compatible with Windows XP64 until it was loaded and booted to the OS. EasyBCD would not open at all. The site says nothing about it not working with XP 64. I guess because it wasn't a common consumer OS in its day.

Then the bootloader for Win 7 of course was corrupted and I couldn't access it. I went to the BIOS and changed the disc mode back to AHCI
and inserted my Win 7 Pro .iso to repair the MBR. I'm going to try and use EasyBCD from Windows 7 now to be able to access Win XP 64.

Stay tuned for more...
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Re: Win XP 64 in IDE Compatibility Mode

#6 Post by Screamer » Fri Feb 15, 2019 3:54 am

Forgive me for my ignorance, but is EasyBCD actually required for dual-booting Windows XP x64 and Windows 7 x86/x64?

My W700 dual-boots Windows XP x64 and Windows Vista x64 with no issues, and that is without the help of EasyBCD.

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Re: Win XP 64 in IDE Compatibility Mode

#7 Post by RealBlackStuff » Fri Feb 15, 2019 8:22 am

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Re: Win XP 64 in IDE Compatibility Mode

#8 Post by MikalE » Fri Feb 15, 2019 11:16 am

The boot menu is configured now, but I have to figure out how to get those AHCI drivers installed on the XP SSD.

When booting, XP is displayed as a choice to boot into, but a blue screen briefly flashes with the 0x00000007b error and then it reboots automatically to Windows 7 because I have the drive set to AHCI mode instead of compatibility mode.

I have full access to the D: drive but I don't know where to put the AHCI drivers.
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Re: Win XP 64 in IDE Compatibility Mode

#9 Post by MikalE » Fri Feb 15, 2019 11:27 am

Screamer wrote:
Fri Feb 15, 2019 1:23 am
MikalE wrote:
Thu Feb 14, 2019 11:03 pm
My question is, does this mode affect Win 7 drive access speeds or time?
Access speeds or access times? I doubt so, because the interface only affects the maximum transfer rate. Not too much of a problem to deal with though, if you are using hard drives in your laptop.
MikalE wrote:
Thu Feb 14, 2019 11:03 pm
I'm going to search for XP AHCI Mode compatible drivers if this installation completes successfully.
Could this be what you were thinking of? It is the latest 64-bit Windows XP/Vista/7 AHCI controller driver, though I am not sure if it does support your laptop.

My T510 worked fine with that driver, as far as I can recall.
Yes. That is what I think I was looking for. But I don't know where to save it.
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Re: Win XP 64 in IDE Compatibility Mode

#10 Post by axur-delmeria » Fri Feb 15, 2019 11:45 am

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Re: Win XP 64 in IDE Compatibility Mode

#11 Post by Thinkpad4by3 » Fri Feb 15, 2019 11:47 am

axur-delmeria wrote:
Fri Feb 15, 2019 11:45 am
Try this method, it might work: https://www.win-raid.com/t2716f23-How-t ... ng-XP.html
I just sent MikalE a link to SlipStream...which would allow him to natively install WinXP on a AHCI system instead of install and switch which might interfere with the dualboot setup.
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Re: Win XP 64 in IDE Compatibility Mode

#12 Post by axur-delmeria » Fri Feb 15, 2019 1:10 pm

Thinkpad4by3 wrote:
Fri Feb 15, 2019 11:47 am
I just sent MikalE a link to SlipStream...which would allow him to natively install WinXP on a AHCI system instead of install and switch which might interfere with the dualboot setup.
Ah yes, slipstreaming. Haven't done that in a long while (maybe a decade?).
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Re: Win XP 64 in IDE Compatibility Mode

#13 Post by MikalE » Fri Feb 15, 2019 3:00 pm

Thank you for the link.

After figuring out that I had to unpack a .rar file I was in business.

The AHCI drivers were slipstreamed onto a freshly burned .iso of XP64 from my XP64 disc I just bought.

Worked great after I figured out the intricacies of doing this.

Downloading .NET Framework 3.5 now.

I'll have to see if the bootloader was corrupted again for Windows 7 and probably have to fix that, although when the system initially booted the first time on XP64 I still had the choice of which operating system to boot to.
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Re: Win XP 64 in IDE Compatibility Mode

#14 Post by MikalE » Fri Feb 15, 2019 3:39 pm

The Win 7 bootloader was corrupted as I suspected, so I popped in the Win 7 .iso and repaired it and now the menu for OS boot selection once again appears and both Windows 7 Pro and Windows XP Pro 64 are working normally as a dual-boot, dual-drive system.

Thanks for all of your help and suggestions.

I'm not a total newb, but I know just enough to be dangerous...
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Re: Win XP 64 in IDE Compatibility Mode

#15 Post by MikalE » Fri Feb 15, 2019 5:48 pm

Now I have a new problem. The ntldr file is missing and now XP will not boot. It booted the first time upon installation, but when going back to Windows 7, and then reloading XP, it didn't.

I looked at the drive directory from within Windows 7 at the command prompt and all that is there is Documents and Settings, EFI, Program Files, Program Files (x86), and WINDOWS.

There is no Autexec.bat, boot.ini, CONFIG.SYS, ntldr, or any other files that are associated with XP startup.

EasyBCD is not helping. It claims to have successuflly installed the bootloader, but it still errors out that Windows could not start. A file is missing or corrupt. NTLDR.

I have tried to repair it from the .iso copy I made, and I've tried the copy command to copy it from the F drive (CD/DVD ROM) to the D drive, but "Access Denied" is all I get for my trouble.

Now I am stuck.
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Re: Win XP 64 in IDE Compatibility Mode

#16 Post by Thinkpad4by3 » Fri Feb 15, 2019 7:00 pm

How about installing two HDDs(or SSDs), one for 7 and one for XP, then use F12 to select which you would like to boot from and screw the partition based dual boot.
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Re: Win XP 64 in IDE Compatibility Mode

#17 Post by MikalE » Fri Feb 15, 2019 7:35 pm

It might come to that.

My next day off I'm going to remove the Windows 7 drive and reload XP 64 to the new drive to keep from screwing up the bootloader. I'll reinstall the Windows 7 drive and see what happens from there.

I don't understand why it would boot the first time and not again. I had not even opened EasyBCD in Windows 7 when I booted that after the initial XP boot.

Then I did return to 7 to see what I could do with EasyBCD. The entries for both OS was still there. I clicked on Fix Boot Drive or some such wording but it did nothing.

I'll try again in a couple of days.
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Re: Win XP 64 in IDE Compatibility Mode

#18 Post by MikalE » Mon Feb 18, 2019 10:45 pm

I think I have this figured out. I have successfully booted back and forth twice now from Windows 7 to XP Pro 64 without incident. I did not have to reload XP, nor remove the Windows 7 drive.

I apparently did not tell EasyBCD to load the BCD bootloader to the C drive and I was attempting to boot from each drive individually. Now even though the boot menu displays both operating systems, that doesn't mean one or the other will boot upon selection.

As I understand it, the NTLDR (NT Loader) file is placed on the C: drive even though Windows XP 64 that uses it is on the D: drive.

The bootloader looks for this file on the C: drive which in turn tells it where the OS is located, in this case, the D: drive.

THis is the full explanation that I copied from a post at another location:

The BCD only points to the target drive for an OS booted directly by the BCD (i.e Vista/7/8/8.1/10).
XP isn't booted by the BCD, the BCD chains to the legacy loader (NTLDR) which boots XP as it always did.
However, catch 22 is that all MS boot managers have to be on the "active" partition, so the NTLDR on the target drive cannot be used.
EasyBCD makes a copy on the "active" drive (where the BCD is) and also creates a boot.ini in the same location.
It is this boot.ini which contains the information about where the XP system is located, not the BCD.
The BCD points to "C" to find the XP boot file copies. They in turn point to the real location of XP via the arc values.
All this is done automatically for you by EasyBCD including searching for and identifying XP.


It seems to be working now. The only glitch so far is that my screen resolution in XP is maxed at 1024 x 768 and looks like crap. I lowered it to 960x something and it is acceptable at this resolution. I don't seem to be able to find a working XP 64 bit driver for the Nvidia NVS4200M. I'll have to research this further.
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Re: Win XP 64 in IDE Compatibility Mode

#19 Post by Screamer » Tue Feb 19, 2019 3:09 am

NVIDIA has a driver for XP x64 that supports the NVS 4200M, but you would need Service Pack 2 to be installed first.

If you were to run the driver setup without Service Pack 2 installed, it will give you an error stating that the 'hardware is not compatible' or similar.

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Re: Win XP 64 in IDE Compatibility Mode

#20 Post by MikalE » Tue Feb 19, 2019 5:54 am

Service Pack 2 has been installed and I still get that error.
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Re: Win XP 64 in IDE Compatibility Mode

#21 Post by Screamer » Tue Feb 19, 2019 6:44 am

I suppose that the subsystem ID for whatever reason, is different.

Try this edited driver, I have done some modifications to the NVS 4200M's .inf file to allow any subsystem ID to pass through.

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Re: Win XP 64 in IDE Compatibility Mode

#22 Post by MikalE » Tue Feb 19, 2019 6:50 am

Thanks. I'll try that later tonight after work. I don't have time to fool with it this morning.
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Re: Win XP 64 in IDE Compatibility Mode

#23 Post by MikalE » Tue Feb 19, 2019 5:45 pm

I'm not able to extract anything from that. I can look at it, but I can't click on anything.

ZIP Extractor just sits there with a wheel turning waiting for authorization that never happens.
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Re: Win XP 64 in IDE Compatibility Mode

#24 Post by MikalE » Tue Feb 19, 2019 7:39 pm

I was able to manually install the Nvidia driver for XP64. I only rebooted it once and it displayed properly when it came back up. I'm on Win7 now and I haven't rebooted XP64 to see if it will revert back to the generic driver yet. I'll take a look later.

Upon the initial boot a couple of days ago it displayed properly too, so I know it found the driver required, but it reverted back to the generic MS driver upon the next reboot. Upon attempting to re-install the driver a couple of days ago I received a message stating the hardware could not be found.

It currently does not show up as the NVS4200M in the device manager, but it was displaying properly before booting back into Win7.

MS Flight Simulator also functions correctly now under XP, but 3-D in not available. Though I guess the driver installed, there is no Nvidia control panel and I think the on-board video processor is running the NVS4200M driver.

Long day.
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Re: Win XP 64 in IDE Compatibility Mode

#25 Post by Screamer » Wed Feb 20, 2019 4:07 am

Ah, I forgot to mention that I created that zipped archive using 7zip's LZMA compression format. That might possibly be the reason why you could not extract it using ZIP Extractor.

Reverted? Does your T520 have Optimus enabled? I would suggest disabling Optimus, since it is not supported under XP x64 as far as I know.

Set the option for 'OS Detection for NVIDIA Optimus' to disabled, then set the option for 'Graphics Device' to 'Discrete Graphics'. This should solve the strange issue regarding the driver reversion.

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Re: Win XP 64 in IDE Compatibility Mode

#26 Post by madicetea » Sat Feb 23, 2019 9:36 pm

One disk with many operating systems... not impossible but rather impractical.
Last edited by madicetea on Tue Jun 11, 2019 8:18 am, edited 1 time in total.
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Re: Win XP 64 in IDE Compatibility Mode

#27 Post by Thinkpad4by3 » Sat Feb 23, 2019 11:39 pm

madicetea wrote:
Sat Feb 23, 2019 9:36 pm
Thinkpad4by3 wrote:
Fri Feb 15, 2019 7:00 pm
How about installing two HDDs(or SSDs), one for 7 and one for XP, then use F12 to select which you would like to boot from and screw the partition based dual boot.
The more Operating Systems you install on one machine, the more critical this method becomes. I would lose my sanity if I had to boot all my Windows, Linux, and even the Hackintosh partition all off of one disk.
The only problem is past two-three operating systems...trying to find places to plug in 3 drives becomes increasingly hard. At that point...I'd find a secondary machine.
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Re: Win XP 64 in IDE Compatibility Mode

#28 Post by madicetea » Sun Feb 24, 2019 1:53 am

I daresay, it would sometimes be easier to have a Desktop with a lot of SATA connectors into the planar.
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Re: Win XP 64 in IDE Compatibility Mode

#29 Post by MikalE » Sun Feb 24, 2019 10:27 am

Did someone miss the first post stating this was a dual-drive, dual-boot system? Two SSD's. Not just two partitions on the same drive.

Still running stable to date. No driver issues, or disc/boot issues.
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Re: Win XP 64 in IDE Compatibility Mode

#30 Post by Thinkpad4by3 » Sun Feb 24, 2019 2:04 pm

MikalE wrote:
Sun Feb 24, 2019 10:27 am
Did someone miss the first post stating this was a dual-drive, dual-boot system? Two SSD's. Not just two partitions on the same drive.

Still running stable to date. No driver issues, or disc/boot issues.
Totally missed that.... dual boot dual drive kinda just blends together.
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