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Tuesday 17.2.2026 / 15:16
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A20 already enabled problem?
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geestar20
AfterDawn Addict
_ 		18. July 2005 @ 15:44 _ Link to this message    Send private message to this user   
I have recently tried to ghost my HD image with nero's backitup and all went fine but as soon as I tried to test the ghosted image I get this "Address line A20 is already enabled"

I have never had issues before with my other computers while using Nero's backitup ghosting software. Maybe it has something with the image loaded in wromg place for the DR-DOS, I don't know. but I can't seem to find this A20 function anywhere in the bios. But as I said before, during bootup process with nero's ghosted dvd that I made, EMM386 complains, that "Address line A20 is already enabled" and the system just freezes, then I have to reset. this only happens when I have tried to test the ghosted dvd.

This a quick rundown of what I have;

MB K8N NEO2 PLATINUM MSI
GA XFX|GF 6800GT 256MB PVT40AUDF3
>POWER SUPPLY ANTEC TP2-550 EPS12V
CPU AMD 64 |3800+ ATHLON 64 939P RT
MUSHKIN DUAL V2 1G(512X2) DDR400 R
HD250G|ST 7200 8M SATA ST3250823AS%
WD 80G 7200 XP Loaded on this drive
DVR|PIONEER DVR-109BK DVD+/-RW%

Any help would be greatfully appreciated. THANX!
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This message has been edited since posting. Last time this message was edited on 18. July 2005 @ 15:59
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geestar20
AfterDawn Addict
_ 		18. July 2005 @ 19:12 _ Link to this message    Send private message to this user   
this is what I found out so far

Fast Gate A20 Option: A20 refers to the high memory area (First 64KB of extended memory). This option uses the fast gate A20 line (if supported) to access memory above 1 MB. This is faster than the normal method. Set it to enabled for better performance.

HOw would I disable it?
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ddp
Moderator
_ 		18. July 2005 @ 19:40 _ Link to this message    Send private message to this user   
in your bios
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geestar20
AfterDawn Addict
_ 		18. July 2005 @ 20:10 _ Link to this message    Send private message to this user   
I know it's in my bios but nothing in there say's A20.

I think I might have figured it out but I might be wrong.

I just found out that my 80gb that has the operating system on it is a slave and is the primary slave and not master....what do you think, could that be the conflict?
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ddp
Moderator
_ 		18. July 2005 @ 20:15 _ Link to this message    Send private message to this user   
change it to master & see. sam posted & i was right about the picture
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geestar20
AfterDawn Addict
_ 		18. July 2005 @ 20:20 _ Link to this message    Send private message to this user   
I'll change it and give an update. (Crossing fingers)

I seen the post by samantha, feel happy and sad for her.
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ddp
Moderator
_ 		18. July 2005 @ 20:25 _ Link to this message    Send private message to this user   
same here!!!
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geestar20
AfterDawn Addict
_ 		20. July 2005 @ 04:42 _ Link to this message    Send private message to this user   
well I did put the HD into master and still could not get it to ghost, I'll try somthing else or maybe any other suggestions.
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