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Member "readme.txt" (29 Aug 2023, 5161 Bytes) of package /windows/misc/memtest86-usb.zip:

    1 PassMark ® Software MemTest86™
    2 Copyright (C) 2013-2023 PassMark Software
    3 All Rights Reserved
    4 https://www.memtest86.com
    5 
    6 Overview
    7 ========================================
    8 PassMark's MemTest86 is a standalone memory testing software for x86 and ARM computers.
    9 MemTest86 boots from a USB flash drive and tests the RAM in your computer for 
   10 faults using a series of comprehensive algorithms and test patterns.
   11 <For more details see the MemTest86 User Guide>
   12 
   13 
   14 Requirements
   15 ========================================
   16 - UEFI-capable x86 (x86/x64) or ARM64 (aarch64) compatible System (Mac and PC)
   17 - USB Flash drive (>= 512MB capacity)
   18 
   19 
   20 Creating a bootable USB drive
   21 ========================================
   22 
   23 For Windows:
   24 
   25  - Plug in your USB drive.
   26  - Launch the included ImageUSB application.
   27  - Select your USB drive from the list (Step 1).
   28  - Select 'Write image to USB drive' (Step 2)
   29  - If it is not already selected, select the included image file (Step 3).
   30  - Click 'Write' (Step 4).
   31 
   32 After accepting a few more prompts this should give you a working
   33 bootable USB drive.
   34 
   35 For Linux:
   36 
   37 1) Insert a USB drive into a USB slot.
   38 2) Determine which device the USB drive is assigned as (eg. /dev/sdc) by opening the Terminal and typing the following command:
   39 
   40 lsblk -p -o NAME,VENDOR,MODEL,SIZE,TYPE,SERIAL
   41 
   42 3) As root, use the 'dd' command to write the image to the USB drive. For example,
   43 
   44 sudo dd if=memtest86-usb.img of=<dev>
   45 
   46 where <dev> is the device the USB key is assigned to obtained from the previous command. Use the base device (ie. /dev/sdc) not a partition designation (ie. /dev/sdc1).
   47 
   48 **Warning** all data on the USB key will be lost. 
   49 **FINAL Warning** Make sure that the device used in the dd command above is correct!!!
   50 
   51 For Mac:
   52 
   53 1) Insert a USB drive into a USB slot.
   54 2) Determine which device the USB drive is assigned as by opening the Terminal and typing the following command:
   55  
   56 diskutil list
   57 
   58 3) Unmount all volumes on the USB drive by typing the following command: 
   59 
   60 diskutil unmountDisk [device name]
   61 
   62 4) As root, use the 'dd' command to write the image to the USB drive. For example,
   63 
   64 sudo dd if=memtest86-usb.img of=<dev>
   65 
   66 where <dev> is the device the USB key is assigned to obtained from the previous command. Use the base device (ie. /dev/disk1) not a partition designation (ie. /dev/disk1s1).
   67 
   68 **Warning** all data on the USB key will be lost. 
   69 **FINAL Warning** Make sure that the device used in the dd command above is correct!!!
   70 
   71 
   72 Booting the MemTest86 USB drive
   73 ========================================
   74 To start MemTest86 insert the USB flash drive into the appropriate drive and 
   75 restart your computer. The UEFI BIOS must be configured to boot from the device 
   76 that MemTest86 is installed on. Most systems have an optional boot menu 
   77 that is enabled by pressing a key at startup (often ESC, F9, F11 or F12).
   78 
   79 If available use the boot menu to select the correct drive.
   80 Please consult your motherboard documentation for details.
   81 
   82 On a Mac, to boot from USB, you need to hold down the ALT / Option key on the Mac keyboard 
   83 while powering on the machine.
   84 
   85 On newer Macs (from 2018) with the Apple T2 Security Chip, you may need to change the SecureBoot settings
   86 for MemTest86 to boot. Please see the following page for instructions:
   87 https://support.apple.com/en-us/HT208330
   88 
   89 Reclaiming disk space from the USB drive
   90 ========================================
   91 You may have noticed that the MemTest86 USB drive you have created may have lost some 
   92 disk space and normal formatting will not recover the lost space. 
   93 For example, this can happen when a UFD contains multiple partitions, such as the
   94 MemTest86 image. Formatting will not span across multiple partitions/volume. 
   95 To erase the partition records and reclaim the whole disk, you will need to 
   96 zero the MBR.
   97 
   98 WARNING: THIS PROCESS WILL COMPLETELY DELETE THE DATA ON THE DRIVE
   99 
  100 For Windows:
  101 
  102 1. Insert UFD.
  103 2. Launch imageUSB and select the appropriate UFD. (Be careful and select the correct drive!).
  104 3. Choose the Zero UFD option & Run.
  105 4. Drive MBR is now Zeroed. You will need to reinsert the drive for Windows to recognize it 
  106    and prompt for formatting before you can use it again. A normal format will now recover 
  107    the full capacity of the USB drive.
  108 
  109 For Linux/Mac:
  110 
  111 1) Insert the USB drive into a USB slot.
  112 2) Determine which device the USB drive is assigned as (eg. /dev/sdc on Linux, /dev/disk1 on Mac).
  113 3) As root, use the 'dd' command to erase the partition table of the USB drive. For example,
  114 
  115 dd if=/dev/zero of=<dev> bs=512 count=1
  116 
  117 where <dev> is the device the USB key is assigned to. Use the base device (ie. /dev/sdc) not a partition designation (ie. /dev/sdc1).
  118 
  119 
  120 Documentation
  121 =============
  122 All the documentation is included in the MemTest86 User Guide PDF. It can be found under the
  123 'help' folder in the USB flash drive. 
  124 
  125 
  126 Support
  127 =======
  128 For technical support, questions, suggestions, please check the User Guide or 
  129 visit our web page at https://www.memtest86.com
  130 
  131 
  132 Ordering / Registration
  133 =======================
  134 All the details are in our sales information page
  135 https://www.memtest86.com/pricing.html
  136 
  137 
  138 Enjoy..
  139 The PassMark Development team