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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12 views

MacOS concept of app open with zero windows

In MacOS, it is possible to close all open instances of an app and still not "quit" the app. For example, in a browser, I can close all tabs in all windows and still have the browser app ...
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14 views

Where does critical section in distributed systems signify

I have been studying distributed systems currently and stumbled upon the concept of critical section. Since a distributed system lacks shared memory, what does a critical section signify and where ...
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23 views

Syscall restarts CPU - hobby OS [closed]

I'm developing my own OS. Successfully started a task in user mode (CPL 3) but when I called a dummy system call it always restarted the CPU. The facts: architecture: x86, simple 80386 instruction ...
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21 views

The pass password-manager do not link bash compleation to my ~/.password-store folder on Arch Linux

Have had this problem on two different Arch Linux machines in the past, but it have magically resolved itself after a day or two. The primary problem is that when I write pass and use Tab, bash do not ...
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1answer
14 views

Moving a file to the prefetch folder make openning it fast?

I have an excel file, that I mostly open. If I put that file in the prefetch folder will make its openning quick? If no do you have other suggestion to make a file open fast? Thank you
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Can you install OS to cd-rw / dvd-rw?

Cds and dvds can be used as installation media of different systems, but can cd or dvd be target of installation process? You can do that with pendrives or even sd cards (if your pc can boot from one) ...
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33 views

If I encrypt my system drive with VeraCrypt, can I be using the computer while this is happening?

I'd like to encrypt the my system drive that my OS is on. This is my only computer, so I was wondering if encrypting it would prevent me from using it, presumably for days. I've tried encrypting an ...
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1answer
22 views

Is there any ubuntu package can replace to libnagios-plugin-perl for Ubuntu18?

I am working on ubuntu18.04 and I need to install libnagios-plugin-perl. But it seems that this package is not available for ubuntu18 up. apt install libnagios-plugin-perl
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Difference: Hypervisor - RuntimeEngine

after big headache and a lot of research I still can't get clear thoughts .. what exactly is the difference between a Hypervisor and a RuntimeEngine ? I know .. .. that a Hypervisor manages virtual ...
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52 views

Timeout detected. (data connection) command line WinSCP

I am downloading files from FTP server using winscp script it was fine till yesterday but today it keeps disconnecting. I do not know what changed today? However, I am able to connect with GUI like ...
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10 views

Windows 10: How to keep task bar buttons in manual order? [duplicate]

Windows 10 has this shortcut key to switch between desktop: Win+Ctrl+Left/Right Choose the classic task bar button mode (with title next to small icon) instead of big icons on task bar, and arrange ...
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1answer
54 views

Are device drivers for controllers or devices?

Please help me straight my understanding about this: From what I understand, motherboards contain pre-installed device controllers. A controller is a chip that's responsible for communicating with the ...
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23 views

Configuring Workstation For Serial Port Communication

I am trying to access the Siemens RuggedComm 900W ROS (operating system associated with the Ethernet switch) by establishing a serial port connection. I have followed the instructions described in the ...
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1answer
34 views

how to get the license key for windows10 developer edition on virtualbox

Hi I've downloaded windows10 image for VirtualBox (from microsoft website) and is working fine. But I see bottom right corner of my guest OS, license expires in xx days. I tried entering my windows10 ...
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1answer
30 views

How can I install Windows 10 on my spare hard drive

I want to install Windows 10 on a hard drive, I already have Ubuntu 20 installed on my first hard drive and want to install Windows 10 on the second one. I did get Windows 10 on a USB though when I ...
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38 views

Windows 10 Pro Upgrade from 10 Home

I bought a Dell Laptop which had a Windows 10 Home OS pre-installed. Now I am thinking of Upgrading to Windows 10 Pro but I am not able to do it. Guys from service center are saying that I have an OEM ...
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55 views

Conpot in Docker and Oschameleon does not work together. How to make it work together in a single machine?

I have been using Conpot, the ICS Honeypot for quite a while now. There is also a tool that is used to change the fingerprint of a machine by fooling nmap probes. It is called Oschameleon. Oschameleon ...
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20 views

My Nmap can't detect OS

I'm trying to use Nmap, so I download its application. Then my target is: "scanme.nmap.org" and I use Intense Scan But something went wrong, after I check, my Nmap can't show its OS (OS ...
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34 views

Can we still use Fn for dragging a window on new MacBooks?

On my older 2013 MacBook Pro, I was able to hold down the Fn key and drag any window my pointer was in. I've looked through the System preferences on my new MacBook but can't find a way to do this (I ...
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7 views

Repeatedly encountering either IOError or OSError while using sudo and installing bpy

I was trying to install bpy using pip and it didn't work. A stack overflow answer led me to sudo pip install pync but now I get this code: Found existing installation: six 1.4.1 DEPRECATION: ...
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47 views

Things to consider before reinstalling Windows

So, I'm planning on reinstalling windows. Long story short, windows insider expired and I cannot opt out of it anymore. Now I just keep getting notifications about it. I'm just wondering what are the ...
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1answer
25 views

Is it possible to move windows to other disk?

Recently I buy a laptop that using HDD, include Windows 10 Home. Now, I want to buy new SSD to increase my laptop performance. Is it possible to move the OS to new disk? Because I do not have the CD, ...
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11 views

Keyboard ia not working

My Laptop is Windows 10,the keyboard of it is not working so I can't able to type even my password to unlock it,so I tried the on screen keyboard but the ctrl keys is pressing,What could be the ...
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1answer
92 views

only 8gb storage on kali linux live on 64gb flash drive

I just got kali Linux Live and put it on my 64Gb flash drive. To install updates these take up to 6Gb of storage. I need your help to solve why I have about only 8Gb of storage on a 64Gb flash drive. ...
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1answer
26 views

Can't load any OS on my thinkpad — Using drive 0, partition 4, No o/s

I've tried to install an OS on a Thinkpad X220. But, if I plug a usb stick on it, there is an error message : "Using drive 0, partition 3. No O/S" and I can't do anything else... And I can't ...
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19 views

What is the location of Alert logs in OSX Catalina?

Does MacOS log all system Alert messages somewhere? My partner saw an Alert during a Facetime call with a set of 'Don't Allow' and 'Okay' Response Buttons. She got rid of the Alert box without reading ...
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9 views

Cronjob is not executing

How can we restart a server weekly as i am trying to write a cronjob by using crontab -e 00 10 * * * root /sbin/shutdown -r now and used this type of method by calling script 23 12 * * * root /home/...
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10 views

What are longest extension names functioning in actual programs? [duplicate]

I'm writing piece of code detecting file extensions and I was getting quite a lot of garbage like . Jones - Some Document Title just because file name was starting with Dr. Jones. So I decided to put ...
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21 views

Is there an OS that can boot .vhd

Is there an Operating system that can load .vhd files and run them like if it was a virtual machine? And if there is how can I use it? I have tried Grub4Dos but that probably isn't what its for
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119 views

How tu run Android Generic System Image (GSI) on qemu-aarch64?

Android GSI contains a system.img and a vbmeta.img. I tried qemu-system-aarch64 system.img -machine virt but qemu simply hangs. If we can directly run the offical pre-built android image, creating an ...
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1answer
62 views

cant install any package on ubuntu Linux

root@osboxes:~# apt install gcc Reading package lists... Done Building dependency tree Reading state information... Done gcc is already the newest version (4:9.3.0-1ubuntu2). 0 upgraded, 0 ...
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46 views

Can you run a Windows Application inside Linux without Third Party Software like WINE?

I want to install an application originally designed for Windows in Ubuntu, but I don't want to install other software, such as WINE, to be able to do it. Is that possible?
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Is the concept of LWP and scheduler activation not valid in case of one to one mapping of user thread and kernel threads

The book, Operating System Concepts by Galvin mentions that the LWP is a datastructure which is used to schedule User Level threads to Kernel Level, This concept of virtual processor makes sense in ...
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858 views

Disabling Shift key from overriding Numlock (or stopping Shift key from overriding Numlock for Numpad keys and using Shift as a Numpad 0-9 modifier)

If anyone knows how to disable/override the functionality in Windows of the Shift key temporarily invalidating the Numlock status so that the numpad 0-9 keys output as other keys (insert, end, down, ...
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1answer
63 views

Cannot update OS due to disk storage space limitations [closed]

I need to update to the latest version of Windows 10 but cannot do this due to limited space on my C: drive. It says I need to free up at least 6GB before I can install (and install the new stuff on a ...
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33 views

Possibly bricked PC after overclocking and frequency change

I helped my friend configure some settings on his BIOS from his custom build PC he made not too long ago, what we did was change the frequency of the RAM, which wasn't too large, and was good as my ...
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45 views

Trying to boot from a windows installation USB and I get a multi-coloured screen

I have been trying to replace my ubuntu OS with windows. I have created a bootable windows installation usb. At first, I created the disk using windows creation media tool on a windows system and I ...
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1answer
41 views

Save state of ubuntu when switching to windows

I have a pc that runs ubuntu and windows and occasionally I have to switch to windows since things aren't always compatible with ubuntu. Therefore, I must close all open applications and open windows. ...
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1answer
202 views

How can I absolutely and completely ban Windows 10 updates? [duplicate]

I know how to pause update to a certain date. But I want to completely ban updates. Whenever I update Windows, all sorts of problems happen. Sound stops working, microphone stops working, 2nd monitor ...
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2answers
55 views

Is it harmful constantly switching back and forth between Operating Systems?

I have heard of a few interesting operating systems a while ago, and I wanted to install them on my small PC to experiment with them, but i'm worried about possible side effects, if there are even any....
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1answer
25 views

Can I format a USB drive using a laptop as a technician PC and having my desktop as my destination PC?

I was told that formatting a USB drive with a laptop would make the format not match the desktop and that it wouldn't work. The reason I'm doing this is because I just bought a new PC I have to build. ...
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1answer
86 views

Why my pc doesn't display the boot menu to choose an OS when I start the pc? [duplicate]

I originally had a Windows OS and I wanted to also have a Linux OS. So I added Ubuntu in dual boot with Windows. However, when I start my pc, it doesn't display the boot menu and goes on the Windows ...
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2answers
22 views

Hibernate or save before switch between OSs

I have multiple OS, Windows and Linux via multi-boot (windows boot-loader), but every time I want to switch between them I must shutdown one OS to boot up other one, has there any way to hibernate or ...
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22 views

System process CPU load (probably APCI related issue)

I'm struggling at system process using 100% of a logical CPU. Using ProcessExplorer and looking at threads details of System process, ACPI.sys+0x269b0 is fully using a logical CPU: Process explorer ...
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30 views

Ubuntu Keyboard/Mouse Input ~Sometimes~ Freezes on Lock Screen

My recently-installed Dual-Boot Ubuntu / Windows Dell Inspiron laptop sometimes freezes the keyboard input / mouse on the lock screen. BUT The funny part: it's not really frozen. I can still change ...
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1answer
43 views

Transferred old SSD with OS to new laptop w/o clean install. Battery drains indredibly quickly

So one of the main selling points of the laptop I just bought last week (Dell xps 13 9300) was its long battery life, allegedly 8hr on heavy use, or 13 hours light use, according to most benchmarks I ...
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14 views

Downgrade Compaq (HP) Presario CQ58-150 SI to Windows 7 Starter from 8.1

My cousin has Compaq (HP) Presario CQ58-150 SI currently with Windows 8.1. But Original OS was Windows 7 starter version with a license. He had no idea when his friend installed Windows 8.1 and now he ...
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26 views

Access and password management on Mac OS

is it possible to perform user authentication management with passwords in access control on a Mac computer with a recent Mac OS operating system? Require users passwords with a minimum length of 12 ...
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77 views

Running Windows 7 64 bit, Windows 7 32 bit and Ubuntu Linux together

I had a Desktop PC with Intel x86 i5-3330 64 bit processor along with Windows 7 32 bit and Ubuntu Linux 14.04 64 bit together on the same Hard Disk Drive with dual boot with GRUB as the bootloader, ...
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1answer
47 views

Install linux on mac

Can I install linux system like ubuntu in mac book. I'm planning to buy a mac, and I don not want to give up the linux. And if so, is there important flaw to install linux as os in mac, or try to ...

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