How to memtest 16GB of DDR2?

Pascal Hambourg wrote:

Nonsense. Memtest86 does not run under DOS.
If it ran under DOS it would be a 16-bit program.

And what *type* operating system (DOS is a type of OS, not a particular
one) do you think this *application* runs under? The program is NOT
written using machine or assembly code (but the boot sector loader was).
The bootstrap code in your BIOS is not going to load this application
directly into memory and transfer control to it.

"The initial versions of the source files bootsect.S, setup.S, head.S
and build.c are from the Linux 1.2.1 kernel and have been heavily
modified" (http://www.memtest86.com/about.html). The boot sector loader
(that your BIOS bootstrap code loads and to which it transfers control)
was written in assembly. That loads the C-written LinuxBIOS program
(http://en.wikipedia.org/wiki/LinuxBIOS) which loads the Linux kernel
which is the DOS that manages the C-written memtest application.

Memtest86 DOES run under an DOS (disk operating system). It's Linux.

VanguardLH writes:

Pascal Hambourg wrote:

Nonsense. Memtest86 does not run under DOS.
If it ran under DOS it would be a 16-bit program.

And what *type* operating system (DOS is a type of OS, not a particular
one) do you think this *application* runs under? The program is NOT
written using machine or assembly code (but the boot sector loader was).
The bootstrap code in your BIOS is not going to load this application
directly into memory and transfer control to it.

The rest of us long ago quit insisting that DOS was generic and
recognized that when somebody says DOS they mean MS-DOS or a clone.

"The initial versions of the source files bootsect.S, setup.S, head.S
and build.c are from the Linux 1.2.1 kernel and have been heavily
modified" (http://www.memtest86.com/about.html). The boot sector loader
(that your BIOS bootstrap code loads and to which it transfers control)
was written in assembly. That loads the C-written LinuxBIOS program
(http://en.wikipedia.org/wiki/LinuxBIOS) which loads the Linux kernel
which is the DOS that manages the C-written memtest application.

Memtest86 DOES run under an DOS (disk operating system). It's Linux.

The README file makes it pretty clear that a few files started out as
parts of a very old version of Linux; beyond that, it's a standalone
program.

Where did you find documentation claiming that it loads a Linux
kernel, or that memtest is an application running under it?

On Thu, 08 Jan 2009 15:17:24 -0700
Joe Pfeiffer wrote:

VanguardLH writes:

Memtest86 DOES run under an DOS (disk operating system). It's
Linux.

The README file makes it pretty clear that a few files started out as
parts of a very old version of Linux; beyond that, it's a standalone
program.

Where did you find documentation claiming that it loads a Linux
kernel, or that memtest is an application running under it?

From README.build-process:

memtest.bin is the floppy/lilo bootable target.

memtest is the ELF bootable target.

And,

$ file memtest.bin
memtest.bin: Linux x86 kernel

»Q« writes:

On Thu, 08 Jan 2009 15:17:24 -0700
Joe Pfeiffer wrote:

VanguardLH writes:

Memtest86 DOES run under an DOS (disk operating system). It's
Linux.

The README file makes it pretty clear that a few files started out as
parts of a very old version of Linux; beyond that, it's a standalone
program.

Where did you find documentation claiming that it loads a Linux
kernel, or that memtest is an application running under it?

From README.build-process:

memtest.bin is the floppy/lilo bootable target.

memtest is the ELF bootable target.

which says memtest is a bootable target in ELF format. Not that it's
a linux kernel.

And,

$ file memtest.bin
memtest.bin: Linux x86 kernel

which, of course, is simply from the fact that the startup code comes
from an antique version of linux's startup code.

On Jan 8, 11:13*am, Joe Pfeiffer wrote:
(hope my earlier post got cancelled in time...)



General Schvantzkoph writes:
On Wed, 07 Jan 2009 23:36:35 -0800, pg wrote:

Hello.

I'm setting up a new rig, with 4 X 4GB DDR2 modules.

I tried run memtest86 but it only detected 4GB of my memory.

In Linux and in XP-64 I see all 16GB of the RAM.

So how to test the RAM?

Anyone knows?

Please help. Thanks !

Sys_basher will test most of it. Memtest86 runs under DOS so it's a 32
bit program,

Note that memtest86 doesn't run under any OS, it runs on the bare
hardware. *Someone else posted that memtest86+ will exercise all the
memory.



I think I hit a brick wall at www.memtest86.org

All I got is a very generic domain squatter type of frontpage, which I
am listing below :

= = = = ==============================

Welcome to memtest86.org
For resources and information on Memory test and Memtest86 Download
Related Searches
Memory test
Memtest86 Download
Free Memory Test
Test My Ram
Memory diagnostic
How To Run Memtest86
Memory test software
Testing Computer Memory
Memory Testers Freeware
How Long Does Memtest86 Take
Memory Tester
PC diagnostic software
Check My Processor Speed
Cpu-z
Docmem
Sponsored Listings for MEMTEST86 DOWNLOAD

= = = = ==============================

pg wrote:


I think I hit a brick wall at www.memtest86.org


http://www.memtest.org/

On Thu, 08 Jan 2009 17:21:24 -0800, propman wrote:

pg wrote:


I think I hit a brick wall at www.memtest86.org


http://www.memtest.org/

try http://www.memtest.COM




--
May's Law:
The quality of correlation is inversly proportional to the density
of control. (The fewer the data points, the smoother the curves.)
----------------------
Mandriva Linux release 2009.0 (Official) for x86_64
2.6.27.7-desktop-1mnb AMD Athlon(tm) 64 X2 Dual Core Processor 5000+
----------------------

Jim Whitby wrote:
On Thu, 08 Jan 2009 17:21:24 -0800, propman wrote:

pg wrote:


I think I hit a brick wall at www.memtest86.org


http://www.memtest.org/

try http://www.memtest.COM





http://www.memtest.org is the home page for Memtest86+...which I believe
the OP was after. :-)

pg wrote:
On Jan 8, 11:13 am, Joe Pfeiffer wrote:
(hope my earlier post got cancelled in time...)

Googling memtest86 dowload floppy
gave the site
http://www.memtest86.com/

Klick free download, voila!!!!

"spodosaurus" wrote in message
...
Ian D wrote:
"pg" wrote in message
...
Hello.

I'm setting up a new rig, with 4 X 4GB DDR2 modules.

I tried run memtest86 but it only detected 4GB of my memory.

In Linux and in XP-64 I see all 16GB of the RAM.

So how to test the RAM?

Anyone knows?

Please help. Thanks !

Memtest86 is the old version.

No it isn't.

There's the commercial version at memtest86.com and the open source
version at memtest86.org


Memtest86+ v2.11 is more up to date than the product at
memtest86.com. Memtest86.com bases their CPU/chipset info
on memtest86+ v1.70, which I also have, but it doesn't correctly
detect the Core i7 CPU and X58 chipset. It says the i7 is a PIII.
It does detect the correct speed and my 6GB of DDR3. V2.11
corrects all that and detects the triple channel.

Memtest86.com may have put a few more bells and whistles in
their pay product.