Discussion in 'Windows Vista' started by test, Jan 22, 2008.
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I would say - obviously something in the bios mod is not compatible with the XP.
I gotta admit that I never install/run XP with the activation code already inside. One might say that I'm not masochist enought?
I simply preffer not to have all these kinds of troubles. I would say - flash the original bios back and use XP w/o the activation stuff. Or do you want your bios to be Vista-ready? It is Vista really worth it? It give me only problems these few times I encouner it.
The problem is that I would like to use dual boot XP/Vista but if I have to flash the bios every time I change of OS...
Ok, I'm trying to modify bios by myself but I have two questions.
1-How do you determine the number of bytes to leave as they are after RSDT?
I know I have to insert "ACRSYSACRPRDCT" but I can't find where it has to be exactly.
2-I have to add the ACPIX.ROM file but what is the best way to insert it? I mean, just add it as table number 5 and leave the others as they are or at number 1 and rename all the other tables?
Any help is welcome...
Nobody can help?
Search for the first RSDT string. (found at BIOSCOD1.ROM)
Right after you'll find the PTLDT string. Insert ACRSYSACRPRDCT by overwriting the 'P' of that string! (Second RSDT string will be overwritten as well!)
Do not change the size of the modules!!!!
Insert the SLIC table as ACPI5.ROM (next higher ACPI table number by inserting it at ROM.SCR 'ACPI ACPI5.ROM -X') Append it right after the ACPI4 line
Make sure you have the corrected Acer SLIC (at its offset 9 there must be 47h as checksum byte)
This is the usual way.
If the xp issue isn't gone you may rename the original acpi4 table to acpi5 and insert the SLIC as acpi4. Use the -X command to insert it as uncompressed!
Thanks a lot Yen, I will try it and let you know if everything is ok.
it doesn't solve the problem: XP won't start...
Any other idea?
This is a very rare issue.
I'd try to rename the original ACPI4.ROM to ACPI5.ROM and insert SLIC as ACPI4.ROM.
Have a look at ROM.SCR to see if the original ACPI4.ROM uses the -X switch. If yes, keep it (use it at ACPI5 to remain it!!!)
Don't change a uncompressed original module to a compressed one! Make sure not to loose a original module! It may end up fatal. (It must be 5 together, always!!!)
Additionally you may ask Fzeven for advice.
I tried changing ACPI4 to ACPI5 but I still have the same issue.
I will PM Fzeven to see if he has other ideas.
think you have confused peeps here what you are looking for is bios mod for slic and slp i,e, vista and xp. and you don't have that, please let us know if that is the problem.)
No, I don't need SLP, my XP is SP2 corporate so no need of SLP. I just need SLIC for Vista.
Fzeven doesn't answer my PM messages. Does anyone has an idea on how I could solve my problem?