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Questions tagged [operating-systems]

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

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ARM emulation in Windows executable

I have files for what I believe to be an ARM OS, there is the file armboot and armimage and armos etc. How can I compile all of these files into an ARM emulation on my Windows PC, ideally have this ...
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1answer
34 views

I deleted the whole HKEY_LOCAL_MACHINE\Software

I accidentally deleted the whole HKEY_LOCAL_MACHINE\Software, my computer is now unable to boot. I have tried system recovery, startup fix, previous good condition and safe mode is not working. How to ...
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0answers
12 views

Ubuntu malfunctioning on dell inspiron 15r? [on hold]

I recently installed ubuntu 18.04 lts on my dell inspiron 15r, for the first week it worked fine, then all of a sudden it started behaving weird. It was printing text like ~[[6 automatically on ...
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0answers
21 views

Restarting Apache causes huge spike in system load

I'm using Apache as a reverse proxy to a Tornado application and currently load testing websockets on the system. Still in the prelim stages so the setup is as follows: I built a Node.js script ...
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0answers
16 views

How can I boot Windows 10 from my HDD located in caddy?

Intro: My laptop is DELL Inspiron 5720. I had a single slot for HDD in my laptop with Windows 10 installed on it. Then, I replaced my "old" HDD with a SSD. But instead of my ODD, I installed a caddy ...
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1answer
194 views

Windows 10 setup ignoring autounattend.xml

I used Windows System Image Manager to create an answer file for an embedded Windows 10. Windows 10 setup seems to ignore the answer file completely and asks me to set up the machine instead of being ...
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0answers
26 views

How to make phone bootable without root using otg [closed]

I downloaded a linux .iso file, i want to boot my laptop from the linux installation but i need drive droid which requires root. The problem is root doesn't work on my phone and mass storage isn't ...
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1answer
100 views

Why there are different default values of TTL used by different operating systems?

In Windows the default TTL is 128 while in Ubuntu it is 64. I always asked the question by what principle these values were chosen, and not for example 255?
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12 views

Why clustered page table is useful for sparse address space? Isn't a hashed page table enough?

My textbook says it's similar to hashed page tables except that each entry in the hash table refer to several pages. It also says it's useful for sparse address space, where memory references are ...
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2answers
51 views

Can a process has 4GB logical address space?

So a single process will have 2^32 bytes address space, isn't that too big? If the address space of a single process is that's big, won't it cost too much time swap-in/out between main memory and ...
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1answer
59 views

Can an application create multiple processes?

I have come to understand that a program is an executable code in the hard-drive and when this is being executed an instance of this program is loaded on to the memory called a process. My question is ...
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11answers
8k views

Would an executable need an OS kernel to run?

I know that when the source code, in say C++, is compiled, the output from the compiler is the machine code (executable) which I thought were instructions to the CPU directly. Recently I was reading ...
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2answers
45 views

What part of Docker image defines its Operating System?

According to my understanding of Operating Systems, the kernel of the OS is what defines its identity as an OS. But, docker container does not have a kernel of its own. It uses the kernel from the ...
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2answers
142 views

Anyway I could change my OS Build?

My windows 10 computer has os build 10240, and I need higher for Windows Subsystem for Linux but I have used it before but I performed a factory reset. Please help.
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1answer
40 views

How to block all connections (except windows update) until Windows 10 is fully updated?

I want to block all connections (except windows update) until Windows 10 is fully updated. How to do that?
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1answer
70 views

Why are Virtual Machines operating system/distro specific?

Why do virtual machine programs (Virtual Box, VMware, etc.) ask what operating system and, in the case of Linux, distro will be running in a virtual machine? I would think that the VM program would ...
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2answers
70 views

Format hard drive without starting windows

My hard drive must be corrupted/missing files etc. I cant boot any windows install/linux. Because i currently can't launch any OS (I also tried running dban to complete wipe my hard drive but there ...
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0answers
42 views

Cannot activate/turn on Windows Subsystem for Linux feature on Windows 10

I'm having a really strange issue with turning on the Linux subsystem on Windows 10 and I've scoured the internet to see if anyone has had this issue -- to no avail. Basically, I click the checkmark ...
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0answers
32 views

Dual booting using the USB drive

I have removed Ubuntu 16.04 LTS from my laptop. I had installed it with USB dual-boot. First i removed the partition and from advanced option choose command prompt and run bootrec.exe /fixmbr. Now I ...
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0answers
90 views

Windows 10 Updates: Win 10 updates its version in increasing order (going through each update)?

I had installed window 10 (genuine and it was some oldest version of win 10)on my laptop in drive with 50 GB storage, since win 10 has been upgraded every twice (approximately) a year, so every update ...
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2answers
52 views

Retrieve process information from nohup command

I use nohup command to run shell scripts as the following: nohup ./run.sh & My question is: After logging out the terminal and coming back later, how can I retrieve the information about this ...
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1answer
90 views

Windows 10 fails to upgrade from Home to Pro edition [duplicate]

I have a legitimate Windows 10 key, which I got from Microsoft Imagine as part of being a student at my school. I have previously used the key 1 time on another computer of mine and successfully ...
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1answer
58 views

How can I get any programs to only/always interact with D: instead instead of C:? [duplicate]

I've built a rig with a small SSD for C: which I want to be pretty much only for the OS, and a HDD D: drive. Problem is, even when I tell them to install and run from D: a lot of programs keep sending ...
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1answer
213 views

How to access/view MacOS files from Ubuntu 18.04?

A few days ago my Macbook Air's disk partitions messed up or something and from what I've gathered off the internet, it seems that the boot.efi file cannot be found.Thankfully I have a PC and could ...
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0answers
12 views

Levels of interfaces between the users and the OS

What are the three levels of interfaces by which users and application programmers interact with the Operating System ?
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1answer
74 views

VirtualBox + Tails … types of Linux

I want to use Tails (version 3.7) on VirtualBox (version 5.2.12) And there are a lot of types of Linux you can choose: Linux x32 Linux x64 Fedora x32 Fedora x64 Ubuntu x32 Ubuntu x64 Debian x32 ...
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2answers
58 views

How does operating system keep track of object positions on the display?

I know the display using standards like VGA can be viewed as a matrix of pixels at least to the operating system. But modern displays include complex UI controls like buttons and text boxes. I do not ...
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0answers
30 views

Can't find a Host, that is up?

There are few vm-clients, and from one of those I launched a scan. A nmap scan (nmap -sP "Routers_IP_range") revealed some hosts up. There is just one Host, I couldn't find. Nmap scan report for ...
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1answer
66 views

How to make system restore point that will not be deleted after newer points created?

I use Windows 8.1 System restore deletes old point when creates a new one. I want to manually create a new point that will not be deleted after the creation of newer points. How to do that?
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0answers
55 views

Long Boot (2 min 47 ) after OS reinstall

Okey so here's the thing. I got my new Helios 300. After i replaced the endless os against Win8.1, later Win10, it seems that i lose more and more Speed and have a longer boot time. I already did ...
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0answers
42 views

How should I upgrade an OS on an OPAL encrypted drive?

I'm currently running Kubuntu 17.04 installed on a Samsung NVMe EVO 960 SSD drive. I managed to install it with OPAL encryption enabled by using sedutil, but it took me about 2 days to make it work (...
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0answers
13 views

how to partition drive with and move the my current OS there?

I currenty brought a laptop with installed Windows10 and 1TB HDD I want to partition my harddrive and into two (25 GB) and (973GB) can I move my OS into the 25 GB? if it is possible how can I do that?...
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1answer
52 views

Clone old SSD to USB to new SSD

So I planned to upgrade my current 128gb SSD to 512gb SSD on my laptop. As my laptop has only 1 m.2 slot, is it possible for me to: Clone my current 128gb SSD (consist of Windows 10 and a few ...
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0answers
20 views

Best way to reset a windows (Nt6x) system before capture other than Sysprep

Is there any other better solution to reset a Windows System with the intent capture and deploy to possible different hardware... The intention is to keep most of the installed software/drivers user ...
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0answers
49 views

Creating a bootable flashdrive

I am trying create a live persistent bootable flashdrive (4GB) with dd command. I used dd if=[pathto.iso] of=/dev/sdb, and the operation finished successfully. After this I needed to add a files ...
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1answer
43 views

Is My Boot Drive Fried From This Evidence? If Not How Can I Fix It?

I got a Windows blue screen a week ago. No text, just blue. Force shut down and left it shut down cause I had to leave. Came back later and turned it back on and I couldn't even get into UEFI. Cleared ...
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1answer
81 views

Is the CPU and GPU as desired?

Does this system have a 64bit processor and operating system? Also is the GPU : Direct3D 11 & Directx Version 11) or equivalent?
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2answers
5k views

Does this mean that Tor saves private information?

I was going through my pagefile.sys system file (as I usually do) and found a few things of note. For example: -----BEGIN RSA PUBLIC KEY----- ...
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2answers
193 views

What is the best way to emulate a screen/monitor on Linux, Windows or OSX?

I am working on a project where I am creating a virtual second screen device which I want to send over the network to another rendering device (another computer, connected to a screen of some sorts.) ...
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0answers
26 views

Can my laptop use two keyboard layouts?

My laptop has an English keyboard, but I also plug an external full-size Spanish keyboard into it. To be honest I hate to switch the layout back and forth when I'm on the go (internal keyboard), or ...
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1answer
23 views

How to get Ubuntu back alongside Windows as operating systems?

I initially had both Windows 10 Home and Ubuntu installed as operating systems on my PC. When I have opened the PC, it displayed me a purple display where it was to choose between Ubuntu and Windows. ...
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0answers
15 views

How to update to CentOS 7.3 1611 from 7.1.1503?

How to update to CentOS 7.3 1611 from 7.1.1503 ? can it done through yum if yes, how to do it ?
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3answers
148 views

No filesystem is same as no Operating System?

Some legacy computers/controllers don't have the filesystem with them is that because these devices don't have an Operating System? If files cannot be saved to these devices, how can the factory ...
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0answers
23 views

how to right click a window title bar from a surface 3 tablet?

how do I right click the title bar for a window on a surface 3 tablet? There's no mouse, but there is a keyboard with mousepad.
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1answer
71 views

How to pass O.S. from a disk to another

I bought a SSD and I wanted to use my operating system on it and use other disks to store other data. Problem is that this is an upgrade and my PC is already running with O.S. in one HDD. My question ...
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2answers
185 views

How to choose default “Open With” program without finding a file first?

After an update for Windows 10 Pro, I can now no longer choose a program as the default for opening a certain type of file, but rather must choose an app from the Microsoft store. Am I doing something ...
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1answer
579 views

Cannot run anything: -bash: fork: retry: No child processes

Sometimes when I try to SSH to my server, I can't run any command because of this error: -bash: fork: retry: No child processes Every time I hit the error, I am unable to run any command. I have to ...
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2answers
77 views

Reinstalling Windows - boot from USB not detected

I bought a notebook without any OS. I installed Windows 10 using the Microsoft download tool and a USB drive. Right now, I have Windows 10 S installed on it. I then bought Windows 10 Home and since ...
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0answers
35 views

Messed up OS settings - Administrative settings

I did mess up with my Administrative System Settings on my Windows 10. Now I cannot open the System Protection settings for restoring to the earlier point or cannot open anything. I tried to set the ...
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0answers
66 views

Windows 10 Home/Pro Does it really run in a VM on your home computer?

Some people at my office told me that Windows 10 doesn't run directly on the hardware like older versions of Windows. That windows sets up a hyper-V and runs the OS in a VM. Is this true and what pro'...