REMOVING THE RAM BARRIER IN XP SP2 32bit

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vampm

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Hi guys! I know that this is a weird conversation, but after reading many articles it seems that the <4gb ram barrier in 32bit win xp is not a physical limitation, but a deliberately action. I know that this barrier is hard-coded in sp2 (but I dont know what happened in xp (no sp) ).

First of all, I will say it nice, plz don start with "install win 7" or "win 7 are better" and such stuff. I LIKE WIN XP, I USE WIN XP. Thats all you need to know. Also, I would use xp 64bit, but that version of xp is not "xp" like, but server 03 like, and has many problems. So plz, don argue with me in these, it will be a waste of time.

Back in the topic, I know the sollution of ramdisk, but I dont want this. I want to see xp sp2 32bit to have 8gb of ram.

I read numerous times about PAE, but many say that it does nothing. Also I know that with PAE there might be issues with drivers, but I don care about this.

So, what do you know on this? Is there any way? I read somewhere that someone knew about a patch or somthing but he didnt had it..
 
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Just to be clear, 32-bit Windows Server editions have used PAE to support more than 4GB of memory by enabling 4GB per process. For example, Windows 2000 Advanced Server could access 8GB of memory, and 2000 Datacenter Sever could access 32GB. Some later versions could access up to 128GB of RAM!
 
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Done through page flipping. Actual address space never exceeds 4GB.
 
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Well, in vista and 7 there is a patch that does this job, so there must be something in xp too. There is no question about it; as phillfrisbie said, 32bit server editions suppport more than 4gb.

As for the actual address space, you mean how much ram a single process can allocate, right? If so, then thats fine for me. I have many different programs open at a time that require lots of memory (ie firefox by itself, with many tabs needs lot of ram, very close to 2gb)

I read that its possible if you take a (kernel?) file from from server 2k3, hack it, recreate the checksum and put it in xp, but thats all that the guy said, if I remeber correct. I still search for that post, cant find it... As phillfrisbie again said, its doable through mod of kernel. How to do it?
 
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Yes, it allows each process to have a 4GB address space. Also, it takes time to change address spaces, so switching between processes is slow compared to a normal thread context switch.
 
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Not dead fro me. I dont want to change the subject of the conversation, but I know that there is a fix for this, and I wont stop seeking it. Even in win7 32 bit there is a patcher that "removes" tha "artifitial" barrier.

So plz just stay on the subject. There is a way, and its of utmost importance to me.
 
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vampm

Be nice. Some very knowledgeable people have stated that the 4 GB limit in 32-bit OSes is a hard limit, and cannot be bypassed except when... as above. It is also a licensing issue, according to some information that I have seen, and we cannot discuss bypassing licensing restrictions.

I suggest that you Google "8 GB on 32-bit". you will find things like this: http://www.youtube.com/watch?v=VcDs4UvmfuE . Otherwise, the general opinion seems to be that you need a 64-bit OS or the PAE feature available only in server OSes. For example, this discussion: http://superuser.com/questions/72655/8gb-ram-on-xp-professional . Some of the links are interesting.
 
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I read that its possible if you take a (kernel?) file from from server 2k3, hack it, recreate the checksum and put it in xp, but thats all that the guy said, if I remeber correct. I still search for that post, cant find it... As phillfrisbie again said, its doable through mod of kernel. How to do it?

Tom's Hardware doesn't provide help to hack Microsoft Software.
 
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