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Questions tagged [operating-systems]

The software layer between your hardware and application programs. It manages program scheduling, memory allocation, interrupt handling, disk input/output, graphic acceleration, hosting device drivers and various other resources.

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4 views

The tools palette icons are not in color when opening GIMP 2.10.12

When I open GIMP 2.10.12 the tools palette icons are all in black and white and not displayed in color as shown on the user manuals. Do I need to do something to display the icons in color?
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32 views

Does NTDETECT and NTOSKRNL available with UEFI GPT booting?

I am not able to understand the process after ESP will call Boot Manager where it ll begin loading Boot Loader and passes to the kernel. Last step which i mentioned am not able to understand whether ...
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No Apple Boot Logo — Can't Boot to Install Disc

I have an old iMac (2008) with which I'm having serious problems. Long story short, I installed Ubuntu on the iMac, and in doing so apparently deleted all partitions on the HDD. It also wiped rEFInd, ...
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Where the role of Boot Manager will come in NT based System?

I was going through booting process for BIOS and UEFI where in BIOS, after first initial steps after the boot sequence, it will find bootable device where it ll get boot loader and bootloader will ...
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“update-secureboot-policy --enroll-key” running on every new startup eating resources

update-secureboot-policy --enroll-key seems to run whenever I start my computer and never stops running unless I manually kill the process. It makes my computer hot and uses lots of system resources. ...
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Is There Any Difference Between the Alt + 7 Or Alt + 0149 Bullet Symbol?

If I hold alt, and press 0, 1, 4, then 9, I get a bullet (•). If I hold alt, then press 7, I get a bullet (•). I've been doing it the first way, but recently came across the second keyboard shortcut....
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22 views

establish a user interface - Functions of an operating system

i was reading about the functions of an operating system and i found the following : An operating system has three main functions: (1) manage the computer's resources, such as the central ...
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Overview preinstalled cli editor [closed]

I'm search for a list or an overview about preinstalled command-line interface editor on different Operating Systems. The reason for my question is that I would like to learn to work with a command-...
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Can anyone give me explaination on Booting process using UEFI and GPT?

Having searched all over the internet i am not able to find proper explaination of terms used in Windows UEFI Boot Process. Some related terms i got but still process and sequence i am not getting. ...
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46 views

Does the instruction register have to send its memory address to MAR before accessing memory?

I am studying computer systems and operating systems and I have been confused about when a memory address would be transferred to the memory address register (MAR). When the instruction register (IR) ...
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1answer
37 views

Operating System not found and can't get in into bios

I have a problem installing OS on my laptop. I tried to install windows 10 OS in my laptop, during the process I deleted the old OS and when I tried to install the new one, the computer found out ...
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how to enable “Show fast user switching menu as - Full Name” system wide

I am currently using macOs High Sierra I was wondering if there is any way to enable "Show Fast User Switching menu as -Full name" system-wide via terminal. There are a lot of users using this mac and ...
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105 views

How to Copy an Operating System to Another HDD?

I found out my hard drive is slowly dying. It's certainly still usable, but I need to copy the operating system to another hard drive, which I don't know how to do. I would like to try to avoid using ...
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Automated/unattended VM installation & setup

I want to be able to fully automate the installation of various operating systems in a virtualized environment. That means configuring of the VM properties such as vHDD space, RAM, VMName, CPU Cores ...
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How to get access of all the parameters a user used to call a shell script? Or forbid the use of * as a valid parameter?

I have a shell script that will be a such of a header to be imported by others scripts Its main goal is forbid the user of "*" and "?" as parameters. I've already tried: 1) To get access to the ...
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File System Performance comparison for deep learning application

I am trying to come up with a mini project for a course. I want to compare 3 different file systems NFS, HDFS and GPFS for a set of metrics to compare their performance for deep learning application. ...
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how can we make /dev/shmem non executable, so that any excutable code cannot run in this address space?

Hey I want to make qnx more secure so that I want to make /tmp (symbolic link to /dev/shmem) directory non executable. It is to make sure that if any file is copied in /tmp directory with a code ...
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29 views

Add local administrator account on Windows 10 box on .loc domain

I'm new to system admin. We have a .loc domain with several Windows 10 boxes on it. One of the boxes, let's call it box 1, is used by an employee with a non-administrator domain user account on the ...
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How to figure out which partition parrot os is installed in?

I installed parrot os a year ago and one day my BIOS got flashed when my computer was updating. Now I need to use live mode to install Grub2 but I don't know which partition has parrot os is installed ...
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26 views

Dual boot from two separate physical storage devices

I have a new laptop that has a 256GB NVMe SSD drive with Windows 10 currently installed. The laptop has 2 NVMe SSD slots, so I plan to move the 256GB SSD to the second slot, and insert a new 1TB SSD ...
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1answer
2k views

What exactly is “C:\Users\MyUser\AppData\Local\Programs”?

This question is similar to this question. However, I'm still looking for more straightforward answers. Is “C:\Users\MyUser\AppData\Local\Programs” the folder where installers install programs for a ...
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1answer
67 views

Install Windows 10 on a device that doesn't have an operating system?

I have brought a computer from a factory company on eBay but it doesn't have an operating system. How do I install windows 10 on a device that doesn't have an operating system?
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How Can i fix this error when logging into elementary OS

I am getting the following error when I logging in to elementary OS. I remember i changed something in etc/environment for fixing some other issue after that i am facing this error.enter image ...
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can i install 64bit windows 10 os in my laptop

experts. I have hp compaq presario q57 with win10 installed. In properties It showing 32bit os and beside that 64bit compatible processor. so can i install 64 win10 on this machine
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OSX Scheduling Priorities for Newly Launched Apps

Is it true, that OSX gives higher priority scheduling to newly launched programs? At the startup my program runs fast, but after like 10 seconds becomes a bit slower for no obvious reason (FPS drop ...
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23 views

Dual booted Mac book Pro with Windows is no longer booting

I dual booted my Mac book pro with windows using Boot Camp for a class and it worked for a few days. When I booted the computer and held option, it would show me both Operating Systems just fine and ...
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22 views

Need to install 64bit by replacing 32bit windows os on uefi laptop

I installed Windows 7 32bit OS in my laptop (uefi) and am facing some issues like disk drive&wireless after that. I want to install 64 bit OS. Not able to boot with disk drive or usb, since I have ...
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How to insall tftp server on Ubuntu 16.04 without public network access

I need to install tftp server on my Ubuntu 16.04, which is in the production environment without public network access(not able to install using apt-get). Which deb packages do I need in order to ...
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1answer
53 views

Trying to understand random access write versus sequential access writes

Say I create the text file on my Linux (or Windows) system, put some content and saved it. Will OS write it as random access writes (RW) or sequential access writes (SW). I understand the concept of ...
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18 views

Is there systemd-analyze plot equivalent in qnx

In Linux systems using systemd , to know the bootup performances and time we have systemd-alalyze coomands like systemd-analyze systemd-analyze blame systemd-analyze critical-chain systemd-analyze ...
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28 views

Hard to understand the performance deference between RAID-4 and RAID-5 when it comes to random writes

The book "Operating Systems: Three Easy Pieces" states that (assuming we have N disks and T is the throughput of one disk). RAID-4 random write performance = 1/2 * T RAID-5 random write performance = ...
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82 views

Remove google enterprise enrollment

I bought a ChromeBase 24 acer, from an Asset IT Recovery Firm, I am trying to turn off the google enterprise enrollment log in. They dont know how to do it. can anyone help me make this a regular ...
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156 views

MySql Workbench - Can't connect to local server (Mac OS Mojave)

I'm getting quite frustrated having spent hours and hours trying to get MySQL and workbench working. I'd deeply appreciate it if any can help. I've downloaded the MySQL 8.0.17 and Workbench 8.0.17. I ...
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29 views

Process 0 is taking 500%+ CPU time in MAC

Problem When I boot my mac, once the login screen appears and after which everything freezes, I can hardly open any applications. Analysis Using activity manager, I found out, process with process ...
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1answer
148 views

What will happen if you format a hard disk many times?

What will happen if you format a hard disk many times? Will it damage the hard disk? Ex. Installing a new OS every week.
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Lenovo computer with several hardrives one with windows 10 would like to add Parrot OS on the other drive

Hard-Drives I just bought a new Lenovo Computer with several hard-drives built into it. One C drive is a SSD with Windows 10 on it. My others D, E, F are clear no OS on them. I just Partition D drive ...
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67 views

pam_tally2 is not working as expected?

I have been using pam_tally2 to lock a user after certain number of failed attempts through ssh. My configuration: /etc/pam.d/common-auth: auth required pam_tally2.so deny=3 ...
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206 views

Windows XP or ME

I have just been given an amazing as new embroidery machine, top of the line. It's software will only run with Windows XP or ME, there are no updates on it as I have already contacted the company. I ...
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134 views

libimobiledevice and ideviceinstaller are not installed. To install with Brew, run

I'm trying to install flutter on my mac OS. But then i run (flutter doctor) command i got this here: Doctor summary (to see all details, run flutter doctor -v): [✓] Flutter (Channel stable, v1.7.8+...
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2answers
42 views

Upgrading from Windows 10 Home to Pro from W-7

I am on Windows 7 Professional. I am going to do the upgrade to windows 10 with that media installer. I am assuming it will put me with the Home edition. If I put in my windows 7 pro key, will it ...
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1answer
34 views

Mac OS X Lion On external drive cant boot

I have the full installer of Mac OS X Lion, that's 3.76 GB, I can install it on a virtual machine, but the OS is too slow, When Installed it to the external drive and boot it onto both Mac Mini (Late ...
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45 views

No irq handler for vector message while trying to install ubuntu

I tried to install Ubuntu 16 on my PC with Windows 10 and got this message after I select boot from USB: No irq handler for vector Than I've tried to install Ubuntu 19 and Mint and got the same ...
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1answer
56 views

Increase key repeat speed on Linux and MacOS

I am writing a library so trying to support multiple OS. I am looking to increase the key repeat speed of the return key and down/up arrows. The speed looks pretty limited, maybe repeats about 8 times ...
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1answer
18 views

Do processes stay in memory until completion?

I'm solving a problem in which I'm given several processes, each with it's own required CPU time for completion, memory requirements and time of entry to the ready queue. The algorithm the scheduler ...
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33 views

Ethernet to managed switch not working

(I posted this question earlier today on ServerFault. It was suggested that SuperUser is a better place for it.) I'm trying to connect Ethernet from my Mac-Mini to devices on an unmanaged switch (...
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1answer
32 views

Ethernet to unmanaged network switch not working

I'm trying to connect Ethernet from my Mac-Mini to devices on an unmanaged switch (Brainboxes SW-504). It's not working. The Mac connects via wifi to a linksys router serving network addresses 192....
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26 views

System Idle Process started a day ago? [duplicate]

Today I'm checking the system processes. I checked the System Idle Process and it said it started a day ago. How?? Last night my computer is off, without power. How did it start a day ago? Last night ...
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1answer
54 views

Creating Python venv for running a dash application on PythonAnywhere

I am trying to create a Python venv to include packages like dash so I can deploy a dash application on PythonAnywhere. I was unable to follow the PythonAnywhere instructions for creating a virtual ...
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18 views

how to read PWM (pulse width modulation signals)

I am developing embedded Linux driver level program in Toradex Apalis Tk1 development board with IXORA career board, and with operating system is Embedded Linux. I need to know that how to read PWM ...
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27 views

Making MsMpEng.exe disk access be nice

MsMpEng.exe disk accesses are making my system unusable. Since this process is critical for system security, it is unreasonable to disable it. Moreover, as it is provided by the OS vendor, and ...