For all features requests or Bug fixes for Memtest86+ (www.memtest.org). NO HELP FOR HARDWARE ISSUE !
Update : Official Memtest86+ USB Installer released
Select Download - Auto-installer for USB Key from this link
Run boot Memtest86+ from USB flash drive
Useful for Notebook they don't have DVD drive to boot.
Backup USB flash drive before run installer
After More than 2 years since 4.20, 5.01 is finally out and the development of Memtest86+ is now fully resumed. Regular updates will follow soon. We still have some issues to solve with embedded menu items and we must add support for IVB-E, HSW-E & BDW.
Tips : F1 will enable fail-safe mode, F2 will enable SMP Mode (disabled by default) and F3 will trigger an hidden alternative SMP Mode.
Memtest86+ V5.01 changelog
- Added support for up to 2 TB of RAM...
To help getting memtest recognising more chipsets i made this thread, so that people could leave a cpu-z dump everytime they found a chipset that memtest wasn't detecting.
Original Thread by Sven Bent.
A simple primer on how to get Memtest86+ to boot from a USB Drive or Hard Drive (without having to install an entire distro or DOS).
note: drive used here is a usb drive located on /dev/sda, so make changes accordingly (eg a hard drive install would use /dev/hdc instead)
First Step - format the drive
optional, only suggested if you're drive needs a good cleaning
(this may take a long time given the size of the drive)
dd if=/dev/zero of=/dev/sda Second Step - create FAT partitions...
Memtest86+ FAQ v1.21
By R.R. van der Vossen (Wichetael)
Latest update 2007-02-28
- What is memtest86+, what do I use it for?
I have windows xp sp3. My PC is an AMD Athlon 64 X2 Dual Core Processor 4000+ 2.10 GHz, 1.93 GB RAM.
My browser is firefox 30.0.
I'm trying to download the memtest86+ installer file,
but when I click on the download link, a "save as" window pops-up, and I have to choose a location and name for the file.
When I open a download location, the "save as type" field is blank: there is no default, and no drop down box for types. I can not enter any file...
I'm new here.
I came across one funny anomaly today.
I pulled a 4GB DDR2 800 Stick from a machine I was repairing for a client about 2 years ago. Replaced with brand new and tested crucial sticks, fine, blah blah.
When testing the memory it had multiple errors across multiple ranges. It was definitely toast... or so I thought. I'd played around with it randomly in other boards before, with the exact same symptoms of bad memory (POST Fail, BSOD, Freezes, etc).
If CPU ratio in BIOS differs from the default (for example, set to 9 while the default is 11) then CPU clock displayed in the left upper corner will be incorrect (too big).
I used the auto-installer for USB key to make a bootable USB. The USB has the following files on it
However, my PC fails to boot from the USB stick even though I've moved USB to the top of the boot order in my bios settings. I've tried on two different sticks, same non-result.
Tonight my computer locked up, I restarted, and after running Windows again for a few minutes it froze again. Linux also locked up quickly. Then it started locking up in BIOS and at POST.
I decided to run Memtest to see if I could spot anything interesting.
No errors showed up but Memtest also froze - the funny thing is that the two red blinking cursors (The _ and the + in Memtest86+) kept blinking even though the computer was locked up otherwise.
Is there any significance to this fact...
I've tried several versions of Memtest86, including the latest (5.01) but I get the same issue:
When loading from a bootable CD, the monitor shows this:
and that's it. It freezes and does nothing else. It won't even warm-boot.
Memtest has worked on several other PCs except this one.
Not sure if this is just a display bug, but these are the sections of RAM that it says it's testing on my machine:
0 - 32M - 32M of 32G
1024K - 2048M - 2047M of 32G
2048M - 3264M - 1216M of 32G
4096M - 6144M - 2048M of 32G
6144M - 8192M - 2048M of 32G
8192M - 10G - 2048M of 32G
10G - 12G - 2048M of 32G
12G - 14G - 2048M of 32G
Hello guys, I'm testing my RAM overclock.Here is my rig and details:
CPU- FX-8120 8core/8threads
Ram- 2 slots x4096M Corsair Vengeance DDR3-1600 (XMP1.2 profile)
I run my memtest from a bootable USB using the grub4dos method.
I start it with multicore support and it runs fine but after the first pass the Active cores become 1 while the rest have the status "W".
When i select "C"config -> "4" Select Cores -> "3" Sequential" -> "0" Continue and then repeat the process...
I have a GA-P35-DS3R motherboard with a Q6600 CPU. I'm using two pairs of modules, G.SKILL F2-6400CL5D-4GBPQ 2*2GB, and OCZ2P8002GK 2*1GB. Both are DDR2-800 5-5-5-15, and the only secondary timing difference I see is 52 tRFC on the 2*2GB vs. 42 tRFC on the 2*1GB. I'm using dual channel mode, "interleaved" according to the BIOS, "symmetric" according to CPU-z and "128-bit Mode" according to Memtest86+.
With either the 2*1GB or 2*2GB I get 3846 MB/s. If I put both in, I get 2727 MB/s. If I put...
Sorry if this is a duplicate thread. The forum won't let me search those terms because they're too common.
Is there a DOS EXE available? I have a bootable USB stick that uses FREE DOS and I'd like to have a memtest exe on it.
Thanks in advance.
EDIT: Found a thread discussing this at http://forum.canardpc.com/threads/83175-Pre-compiled-EXE-file
Hi all, new to the forum. I have been using memtest for many years and it has been a nice tool to use to exercise memory. I work for a company that develops test equipment and we are trying to find a memory test that would test for the row hammer problem in DDR3. I was wondering if there is a way to use memtest for that purpose. For those of you who are not familiar with row hammer, it is a problem in DDR3 when an area of the memory is hammered by activity and the surrounding memory...
Memtest86+ is running with an Intel Prozessor Core i5-4440 3,1GHz 6MB Cache using 4 cores.
Memtest86+ is freezing while running test #7. Why?
Please help me.
Picture from the freezing:
I recently purchased some used Corsair RAM (DDR2 800 4 GB kit - CGM2X2G800). I originally tested it with Memtest 4.20 and got some errors (I didn't write down the errors or take a picture, unfortunately). So, I decided to get the latest version and run the test again (with version 5.01).
It ends up with errors during test #7. I am attaching a shot of the screen. I am wanting to know if this appears to be a legitimate error or if it is a bug in version 5.01. I also have a set of OCZ...
Ok So some background, my sons i5 on ASUS Maximus VI Formula motherboard desktop had just started haveing BSOD's, as soon as it was booting and running start-up programs ..
It booted in safe mode so:-
I stopped 70% of the start-up routines and it now booted and he played a game and recieved another BSOD but whilst possibly related it didn't crash on start-up...
entering the codes in google brought up nothing other than possibly hardware etc including memory so rather than removing each...
I have tested RAM on Asus P5LD2. First, timings was: 5-5-5-12-2 (see attach 1 - IMG_2622.jpg), Memtest+ displayed "5-5-5-12" (see attach 2 - IMG_2623.jpg). Then, I changed timings to 5-5-6-12-2 (see attach 3 - IMG_2625.jpg). Memtest+ displayed "5-2-5-12" (see attach 4 - IMG_2624.jpg).
What is usually the bottleneck in the speed at which Memtest86+ makes its passes? Does it depend on the test being run?
I have some problem with running Memtest86 5.01 after I compile the source I can't run this tool anyhow (from grub or made ISO).
I use source from version 4.20 and everything is working OK.
I research the forum to find some advices and according to other topic i try with different versio of gcc (4.4, 4.6, 4.7).
Did anyone of you found such problem?
I work on debian 3.2.0-4 i686
Thanks in advance for your advices.
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I downloaded and burned ver 5 to a new CD.
Last night I booted my Win7 64bit system with 4 gigs of PNY memory to the new memtest CD to check the memory. What started was ver 4.3 (I think). I let it run overnight and when I came in this morning, the memtest program had switched to ver 5 sometime overnight???
It apparently had just changed over to ver 5 about an hour or so earlier before I came in to check it, because it was on pass 3. Last night before I left, it was already on pass 4...
Faced the problem with motherboard Gigabyte GA-MA770T-UD3 . Always, versions 5.0beta1 and 5.01 final on the start shows the message "press F2 for SMP mode", but with these Gigabyte there is no message about F2 on the test start, the same problem when i choose "all processors" from menu by clicking "C".
Is any version, that works correcly with my MOBO? Need to check a lot of modules, single-thread mode is too slow(16G pass in about a 1.20 hour)
I believe I found an issue with memtest 5.x and how it uses AMD processors.
With my testing, I've found memtest 5.x is picky, depending on the AMD CPU. Some it refuses to use any but the first core like the A6-3620 FM1 AND the brand new dual core A4-6300 FM2 I recently tested both with (it says Cores Available: 0 and in the test, as shown in below screenshot CPUs started: 1), some it will only use 2 of 4 cores (like some newer A8 AM2+ CPUs), and others it is constantly "waiting" on...
Hi! I am new to Memtest86. Today I installed 2 more Apacer RAM sticks and thought I should fire the memtest to see if they with with my Kingston ones. While waiting, I noticed it displayed the RAM as DDR2 but they are DDR3... is this a memtest bug or anything I should worry about?
Here are some pictures too.
Thanks in advance!
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When I did a test on 3 4GB modules (12GB, DDR3, 1333), the first pass took about 1:45 to finish (using the F2 SMT mode.) The second pass, however, took about 8:15 to finally finish. No errors were found, but this seems like an incredibly long time for a single pass of only 12GB of 1333 RAM. Is this normal?
The vast majority of the time was spent on Test #8. I believe that the rest of the tests took less than an hour, while Test #8 took the rest. On top of this, the percentages counters...
controller.c:2861:15: warning: variable 'dev6' is uninitialized when used here Source code is pci_conf_read( 0, 6, 0, 0x40, 4, &dev62); ptr2=(long*)(dev6+0x68); Maybe something like pci_conf_read( 0, 6, 0, 0x40, 4, &dev62); ptr2= (long*) (dev62 + 0x68); was intended.
I used memtest86 to do some diagnostics and used a 4GB USB drive to do so.
What I want to know is how do I restore my USB drive to its original 4GB capacity state.
Right now it's only showing a capacity of 49MB.
The link with the steps at http://www.memtest86.com/technical.htm#recover is a dead end.
Is this forum safe from heart bleed bug ? I tried to run a test from here.
but it came out inconclusive
I tried to run Memtest86+ 5.01 in multi-threaded mode, but I was unable to do it over a serial console. I set up the console using the "console=ttyS1,115200" boot parameter, but it seems that there is no way how to press F2 over it. Is there any way how to do it, or how to override the fail_safe flags using boot parameters?
Hello! I've been using memtest86+ to test 4 of my memories (in a 4 slot motherboard)
I'm here to ask you for help reconizing the status page, I step with a few errors but I would like to know how to read the status and errors and how everything means.
You can see the Screenshot attached below.
I am working on my parents HP Computer and have tried to do as much research as possible before posting.
I'll include a picture that should help let you know what I'm using.
Here is where I'm at. I've been getting the BSOD and am trying to test the RAM to see if there is an issue with it. When I first tested the RAM with memtest86+, it showed a lot of errors with test #8. I tested with each RAM stick individually and they had no errors. So I decided to put them back in and test them...
Use this control to limit the display of threads to those newer than the specified time frame.
Allows you to choose the data by which the thread list will be sorted.
Order threads in...
Note: when sorting by date, 'descending order' will show the newest results first.