EMM386: warning : address line a20 already my

Microsoft Windows 98 se (full product)
August 6, 2010 at 05:55:36
Specs: Windows 98, 504
when i want to install windows 98 by cd the computer show this message EMM386: warning : address line a20 already enabled from =d000 kb=32768, my ram is 504

See More: EMM386: warning : address line a20 already my

Report •


#1
August 6, 2010 at 06:27:33
"my ram is 504"

Actually, you have 512MB with 8MB being used by the onboard video. Win98 has problems with 512MB or more. If possible, reduce your RAM amount to 256MB (or even 128MB), install Win98, editing the vcache setting in the system.ini file, then reinstall your RAM.

http://www.computing.net/answers/wi...


Report •

#2
August 6, 2010 at 08:32:30
Win 98SE works very well with 128mb of ram. You won't notice any difference at all with more than 32mb more than that or more.

Report •

#3
August 6, 2010 at 09:11:56
This isn't a RAM issue, you're probably just not configuring extended memory correctly. Try using CD-ROM GOD and load windows 9x that way.

PowerMac 9600(1 ghz G4)
512mb RAM
50gb SCSI
ATi 9200 PCI


Report •

Related Solutions

#4
August 6, 2010 at 14:30:41
If it's not a RAM issue, it's a problem with your boot floppy. Try a different one:

http://www.bootdisk.com/bootdisk.htm


Report •

#5
August 6, 2010 at 17:29:03
If you're booting from a floppy bootdisk you don't even need to load emm386.exe. In config.sys the only drivers you need loaded are himem.sys and the cdrom driver.

Now that's what I call a sticky situation


Report •

#6
August 6, 2010 at 19:26:46
"Product: Microsoft Windows 98 se (full product)"

"when i want to install windows 98 by cd ..."

If he boots the computer from the 98SE CD, he doesn't need a boot floppy. That loads the same things as the Startup disk, you end up an at an A:/ > prompt.
If a 98SE Startup disk has suitable optical drive drivers, so does the CD - you don't need to mess with the Autoexec.bat or Config.sys, the same as the Startup disk loads.

When I got my first OEM 98SE CD in Dec. 1999, it didn't come with a Startup disk floppy. Some of the later ones did come with one - the same as the one you make during Setup, or in Add Remove Programs in 98SE, except it has one more menu choice - run Setup , or similar.
You only need to use a Startup disk, or a suitable boot disk, with a full version 98SE CD if you can't boot the computer from an optical drive, or if want to install Windows "overtop" of an existing installation to try to repair it. If you boot from the full version CD, you can't install it again "overtop" of an existing installation - the only thing you can do is to delete the existing Windows installation before installing it again.



Report •

#7
August 6, 2010 at 20:03:49
Yeah, if he's booting from the cd. That wasn't absolutely clear.

I found this:

http://www.overclock.net/faqs/38493...

if it's a cd burned with Nero. This old thread also indicates the error may occur if DR DOS is involved:

http://www.computing.net/answers/do...

I know the 98 bootdisks don't load emm386.exe and assume the cd is the same. Can that error message occur if emm386 isn't loaded? I don't know.

I remember some old PC's had the 'fast A20 gate' option in cmos/bios setup but I don't think there's any A20 option in the newer ones.

Now that's what I call a sticky situation


Report •

#8
August 6, 2010 at 20:08:56
If he's having the problem when booting from a cd then I suggest he use a bootdisk--making sure it doesn't load emm386--and do the install the 'old fashioned way'.

Now that's what I call a sticky situation


Report •

#9
August 6, 2010 at 20:42:06
"I inow the 98 bootdisks don't load emm386.exe and assume the cd is the same."

I checked a Startup disk - you're right about that - himem.sys is in config.sys but not emm386.exe
I booted from the 98SE CD, typed: type config.sys
it scrolls past, but it just so happens the right part of it appears on the screen (there is more command) - emm386 is not loaded in that either.

"Can that error message occur if emm386 isn't loaded?"

Maybe he IS trying to boot from a boot floppy that DOES have the line that loads emm386 in config.sys ??

There is emm386.exe on the CD in \Tools\OldMsDos

It's the same as in C:\Windows once 98SE has been installed.
......

By the way, the third menu choice when you boot from the CD is:

1. Start Windows 98 Setup from CD-Rom .

That's probably the same as on the Startup disk floppy that came with the later full version CDs.


Report •

#10
August 6, 2010 at 21:00:08
I found a few more references to DR DOS causing that problem both as a regular dos boot and when it's used as system files on a burned cd. I hope he posts back with the specifics on whatever he's booting with.

Now that's what I call a sticky situation


Report •

#11
August 7, 2010 at 08:52:59
Thread moved from the hardware forum.

Report •


Ask Question