Questions tagged [memtest]

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warning After sudo apt upgrade

I am a newbie, what should i do next? can it cause problem? Memtest86+ needs a 16-bit boot, that is not available on EFI, exiting Warning: os-prober will not be executed to detect other bootable ...
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1 vote
1 answer
271 views

Adding MemTest86 to Grub if boot partition resides on NVME drive

I want to add MemTest86 to Ubuntu 20.04 grub menu. I followed Official MemTest86 guide, but they presume that the system EFI partition is on the SATA drive (/dev/sdX). I have NVME drive for the system ...
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what does memtest86+ serial console mean

In the GRUB, there are 2 options for memory test, memtest86+ and memtest86+ serial console 115200. What the first one means is obvious, it just runs memtest86+, but what does that serial console mean ...
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Not booting due to not starting ZSYS

I am using Ubuntu 21.04 on a dual boot Lenovo I can get to the GRUB, and when I go to "Advanced Options", I have tried to boot from the both recovery boots and get a: FAILED to start ZSYS ...
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3 votes
1 answer
239 views

RAM has become very slow low write speed and high latency

I have identified an issue with memory speeds and latency on my server. I am renting this server from OVH and one of their requirements before getting the RAM replaced is To launch an intervention, ...
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1 vote
2 answers
898 views

Memtest86 freezing on Ubuntu 20.04

After installing Ubuntu 20.04 several months ago I noticed that my computer is running more slowly than before. It takes anywhere from 30 seconds to one minute to launch Chrome browser. Pages load ...
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1 answer
370 views

adding memtest86 to Grub fails

I want to add memtest86 to my Grub menu on an EFI system. I follow these instructions. However when choosing the new grub menu entry, I get this error: error: disk `hd0,gpt1' not found On my system, ...
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My Ubuntu PC is not booting but it is keep booting the memtest

I don't know what I did, but it is keep booting up memtest. What is wrong with it? Did it replace my bootloader? Or how can I get my data back if so?
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3 votes
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447 views

Tracking down a system freeze

Hey there I am doing yet another edit with newly gathered information. So far there has been few responses here, so this will probably be the last one. I am running a ThinkPad P14s with Ubuntu 20.04. ...
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1 vote
2 answers
6k views

Why does memtest keep freezing?

My computer is very old, and uses DDR2, with a max of 8 Gigs of RAM. I recently replaced the two RAM cartridges in my computer with enough RAM to max it out. But, just a while ago, I tried to run a ...
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1 answer
356 views

Ubuntu crashing - memtest86 shows failed tests - can tweaking UEFI help or Grub BadRam?

I was asked to fixed an out-of-warranty laptop where windows 10S would hang for hours on boot & never launch. After trying everything i could think of, i gave up and installed Ubuntu. Ubuntu ...
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2 votes
0 answers
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memtest -- only movement is blinking red + sign in upper left

Running memtest from the grub menu. The display looks okay except there is nothing moving as I expect to see. The only action is the red plus sign in the upper left. There was a beep as the test ...
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1 vote
1 answer
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How to know when grub memtest is complete

I have a test that has been running for over eight hours. There is a message to press Esc to exit, but it is still running. It shows 0 errors so far. Will it eventually stop? How do I know that ...
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1 answer
332 views

memtester exit code 6

In Ubuntu 18.04 I have been running memtester to test the RAM of the hardware. Upon using the command sudo memtester 100M 2 I get an exit code 6 which is not documented in the man page. What does ...
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MemTest86+ Errors

I have a bad stick of ram, but I'm trying to figure out the Memtest86+ reading. At the upper right, it shows that I have a ton of errors, but only one red line is listed. I've narrowed it down to ...
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1 vote
1 answer
5k views

How do I exit memtest86+?

I am stuck in memtest86+ 5.01. I can't figure out to get out of it. I tried Esc. But it again starts doing memtest. The memtest is downloaded from new Ubuntu 18.04 version so it doesn't need any CD or ...
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1 vote
1 answer
290 views

Memtest86+ does not start on Lenovo z5070

I would like to test my RAM. I have booted live USB with the latest Ubuntu and used it for accessing of memtest86+, but testing did not start. Note: this USB had worked fine on other my laptop of ...
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164 views

Automate Memtest86

I've looked around and haven't seen anything like this so here we go. I want to put Memtest86 on a bootable USB and then have it automatically run through tests 0 and 1. (Preferably I would like to ...
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2 votes
1 answer
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How to test individual RAM modules with memtest86?

I bought a used PC that is quite old and decided to test the RAM with memtest86 (ran for about 3.5 hrs) using a live USB but it seems that only one module (the first one in slot 0 which is the slower ...
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28 votes
3 answers
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Can I boot memtest86+ if I'm using UEFI?

Downloaded the Ubuntu 16.04.2 .iso install disk and flashed it onto a USB stick. Booting on the USB stick, there is no memtest86+ option (along with "Try Ubuntu"). Is there a way to add it to the ...
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1 answer
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Problem with reinstalling grub2

My gui was gone (I turned on my laptop and memtest popped out and was still there forever) so after some searching I understood that I have to reinstall grub2. I downloaded Ubuntu live cd, put it in a ...
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1 answer
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Ubuntu boot ISO image with PXE, using just tftp, dhcp and apache but NOT NFS

This question has been asked before, without a proper answer: Is it possible to boot a LiveCD of Ubuntu via PXE using HTTP (not NFS)? It seems that there used to be a trick with memdisk too (Thin ...
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11 votes
1 answer
79k views

Run memtest in terminal [duplicate]

I am running Ubuntu from flash drive and I would like to run memtest in terminal mode as multiple processes, I see file resides in boot directory but not able to execute as I get message "permission ...
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1 vote
0 answers
152 views

Memtest86 in Ubuntu 14.04 problem

I use Ubuntu 14.04 and I tried to update it (to the latest distribution) but I encountered an error. I don't quite remember the error message. Reading tips from some forums, I moved on to cleaning ...
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1 vote
0 answers
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How to identify and correct corruption of Ubuntu installation?

I set up a new computer with Ubuntu 16.04.1 LTS (GNU/Linux 4.4.0-45-generic x86_64) It was working fine for a while but then started giving me address boundary errors and my Unity desktop theme ...
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2 votes
2 answers
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Execute memtest86+ on a Ubuntu 16 system

I'm desperately trying to get memtest86+ to work on my fresh Ubuntu 16 LTS install. I'm aware that there already are questions related to Ubuntu + memtest on this site, but none of the associated ...
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3 votes
1 answer
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Help me understand memtest in my laptop

I'm having problems with my old laptop: Ahtec clevo m7xsun from 2009, xubuntu 16.04 64 bits, kernel 4.4.0.25 and upstream 4.7.0.22 for testing. There are 4 GiB of installed RAM in 2 modules. Sometimes ...
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2 votes
0 answers
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RAM Memory Not Recognized

Today I put a new 8GB RAM, replacing the old 4GB one, but it's not recognized by Ubuntu nor by Windows 10 (I have dual OS). Now I have only 4GB recognized because I didn't replaced both of them. I ...
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1 answer
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Can't access to the system after an update

Last night I got security updates notifications on my laptop operating under Ubuntu 14.04 so when I procede I got error message telling me that I need some 25Mo of space .. So as usual I made apt-...
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1 vote
1 answer
2k views

Memtest86+ does not work on efi system. Is there an alternative way? [duplicate]

It shows "unknown command linux16" when I run memtest86+ on efi system.
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1 vote
2 answers
209 views

dpkg -l | grep linux-image warning and memtest86

I have executed dpkg -l | grep linux-image After that I deleted the old kernels with the command sudo apt-get purge linux-image-3.19.0-32-generic I kept linux-image-3.19.0-**37(and33) and at ...
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5 votes
1 answer
13k views

How to run Memtest under 14.04 with UEFI?

I'm experiencing frequent "graying out" of my screen in memory-intensive programs like darktable so I'd like to test my RAM (installed 8GB). My Grub menu does not list Memtest as an option however the ...
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1 vote
2 answers
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How to remove memtest86 menu entries from Grub 2 [duplicate]

How to hide/remove memtest86 menu entries from Grub2. I have Ubuntu 15.04
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0 votes
1 answer
453 views

Help me to interpret my memtest+ result and guide me what to do next

I have previously installed and enjoyed Ubuntu and had both 12.04 and 14.04 but I uninstall both of them and installed 14.04 LTS and it was a disaster for me. Could open my PC anymore due to many ...
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59 votes
3 answers
142k views

How do I run memtest86+?

If I encounter a situation where I suspect my machine's RAM might be going bad, I might need to launch memtest86+ to check it. How can I do this using Ubuntu? Are there different methods for launching ...
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1 vote
1 answer
389 views

Why is Memtest still version 4.20 when there is 5.01 out since over a year?

Why is Memtest still version 4.20 when there is 5.01 out since over a year? Is it so hard to get that one into the repositories? The additional supports alone are worth it.
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1 answer
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Frequent kernel panics always accompined by severe graphical glitching. Is my machine possessed or in need of a new motherboard?

Ubuntu 14.04 I'm having incredibly frequent kernel panics that have been getting worse for the last week, after I installed and then removed Gnome and GDE. At this point, it is almost impossible to ...
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1 answer
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Memory check without rebooting?

I picked up a laptop at the flea market. Seems to be Chinese product for internal market. It had Windows Starter that didn't even boot at all. I installed Linux and found out that its motherboard can'...
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0 votes
1 answer
273 views

Memtest86 tests no errors in test again

I started memtest in first pass it showed 15 errors But i wanted to test again to be deterministic about faulty ram and talk to my laptop shop guy. In this run i am not able to reproduce errors so ...
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0 votes
1 answer
220 views

Cannot access GNU GRUB [duplicate]

I accidentally changed my GRUB options to boot from memtest instead of the correct linux kernel. Holding shift, esc, arrow keys, and every other combination will not bring up the GNU GRUB as desired. ...
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2 votes
1 answer
1k views

Why does memtest86+ restart immediately when I click start test?

I have tried memtest86+ from different liveCDs but when I click on start....it reboots. My laptop has been kinda slow lately...so I decided to test it and this is what happened. It is really weird. Is ...
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1 vote
2 answers
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Is removing memtest entries from GRUB a bad idea?

The memtest entries in GRUB are just annoying and useless IMO (I think they shouldn't even come preinstalled, they only confuse newbies and if you really need them you can install them later...). Is ...
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6 votes
2 answers
15k views

Memtest86+ options are missing in Grub menu

I had the same problem as @coversnail here: How can I add the Memtest86+ options back to the Grub menu? The problem is: I just can choose between older kernel versions and the actual Ubuntu version ...
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  • 273
1 vote
2 answers
2k views

memtest86+ fails to launch

Installed on Ubuntu 12.04, so version is 4.20-1.1ubuntu1 as per repository. Selecting memtest86+ from the GRUB menu gives a black screen for a bit, and then the laptop reboots, failing to show ...
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34 votes
7 answers
51k views

Where is the memtest option on the Ubuntu 64-bit live CD?

I'm looking for the memtest option on the 64-bit version of the Ubuntu 12.04 live CD, but the only options I have are "Try Ubuntu without installing", "Install Ubuntu", and "Check disc for defects". ...
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3 votes
1 answer
3k views

Unable to run memtest from grub boot menu

12.04 LTS running along with Windows 8(dual boot). My problem is when I try to run memtest from grub boot menu I get this error too small lower memory (0x99100 > 0x98400) I have 1 GB of RAM and ...
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1 vote
2 answers
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How can I change the frequency of the RAM, and also know its value from Ubuntu?

I am using two modules of RAM and I would like to know their frequency because at simple sight, I can't see any sign of it in the modules. When I ran memtest one time, it showed me the test settings' ...
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2 votes
0 answers
91 views

How to best check my hardware (mem and HD) for errors? [duplicate]

Possible Duplicate: How can I check my RAM and harddrive for errors? Lately, I have been experiencing problems using an Apple (macbook pro 3,1 2GB ram) with Natty installed. In three consecutive ...
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49 votes
5 answers
93k views

How can I add the Memtest86+ options back to the Grub menu?

If using UEFI Please see this question, "Can I boot memtest86+ if I'm using UEFI?" After having installed the 64bit version of Ubuntu 12.04 on my Lenovo B570 I ran into the same problems I had when ...
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