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Operating Systems

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Operating systems perform basic tasks, such as recognizing input from the keyboard, sending output to the display screen, keeping track of files and directories on the disk, and controlling peripheral devices such as disk drives and printers. For large systems, the operating system makes sure that different programs and users running at the same time do not interfere with each other. The operating system is also responsible for security, ensuring that unauthorized users do not access the system. Operating systems provide a software platform on top of which other programs, called application programs, can run.

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What is a good full window or screen magnifier for Win 10
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Learn Ruby Fundamentals
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Learn Ruby Fundamentals

This course will introduce you to Ruby, as well as teach you about classes, methods, variables, data structures, loops, enumerable methods, and finishing touches.

new OS + drivers windows 10 64 bit does not boot anymore from Samsung 850 EVO SSD " insert boot device and hit a key"
latest BIOS version

settings tried :
AHCI/IDE
windows boot manager / samsung
in CSM: UefiLegacy
other Sata slotand cable tested

this disk boots normally from Asus board H97M-E in AHCI mode

suggestions and solutions welcome
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Hi, Experts, I have an .exe application on my computer which have an OS of Windows 10 pro. I need to run this app automatically while restarting my computer. What I meant to say here is that while my computer is waiting for my password to open it, the .exe file should run a head. It won't work while I'm  tried to set on Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run. Is there any other solution to achieve this goal?
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I get a black screen when I am trying to install Manjaro 17 from USB onto my Asus tower, G20aj Processor Intel® Core™ i5-4460 CPU @ 3.20GHz, 3201 Mhz, 4 Core(s), 4 Logical Processor(s). . ( had the same issue in Ubuntu, but thought the different loader Manjaro and Arch might make a difference but it hasn’t.)  The problem seems to lie with the Asus video drivers as I can install just fine on my Alienware/Dell and my HP Spectre.
On the Ubuntu side I found posts talking about some commands to run to get around this issue like aspci and quiet splash, etc. I am not sure where to enter commands or how.  

What I have been doing is boot the computer with install USB and go to the Manjaro OS install line press “e” and then go to the line beginning “Linux/boot/vmlinux-$2” at the end of that line place my commands like  acpi_enforce_resources=lax acpi_osi=Linux acpi_osi=’!Windows 2012’ acpi=force pcie_aspm=force
and then hit F10?

Nothing seems to work.  I have been working on the Manjaro forum but have come to a bit of deadend.
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Hello,

We have a .Net application currently being hosted on win 2003 servers. As a migration activity we are planning to move/upgrade the application
to win 2012 servers. the Existing legacy application has COM+ Components since we are moving to new framework we are trying to find appropriate way
how we can handle this COM+ Components to new .NET framework and win OS.

QQ: Can we convert the COM+ to Active X and then deploy on the new env. Will this work and if yes . then can somebody share with me
the details as how to do this migration activity.
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How do I remoive AD from Server 2012 R2 Esentials server.

I spun up a VM of this OS to figure out how to do it, and while MS support say yes, I am hitting the wall.

Running DCPROMO says - use server manager to remove AD Services
Server Manager > Roles and Features > remove AD - reports cert services needs to be removed
Server Manager > Roles and Features > remove certficate services reports an error, but there isnt any error description.
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Is there a command that I can run in our Microsoft environment to tell which OS is running on all of our servers and be able to print it out?
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Hello all,

I am deploying sccm task sequence on virtual machine. Is there any way I can see the logs from diffrent computer. I can see those when it is installing OS. but after installing os it restart the machine and sits on the login screen. Is there any way i can see logs there?

Regards
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This affects Macs in our environment running OS Sierra, and Microsoft Office 2016.  The users are using Microsoft Word, and in their Word documents they embed images by dragging the image from the desktop and onto the document; they then resize the image and position it where they want, in the document.

The issue is that after saving the document - at some point later, they open the document and find the images are gone, replaced with a empty frame that has a red X, and text that reads: The image part with relationship ID rld8 was not found in the file.

I've searched for possible answers and most Microsoft articles at answers.microsoft.com address a similar issue in Powerpoint and say that it is a problem that affected specific versions of Word for Mac; we're on a later version and the problem persists.
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Good day Sir/Madam,

i'm having some issues with a PC that keeps freezing after it gets locked. the PC is a HP ProDesk 400 G4 DM and its OS is Win10 Pro.
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Become a Certified Penetration Testing Engineer
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Become a Certified Penetration Testing Engineer

This CPTE Certified Penetration Testing Engineer course covers everything you need to know about becoming a Certified Penetration Testing Engineer. Career Path: Professional roles include Ethical Hackers, Security Consultants, System Administrators, and Chief Security Officers.

See: https://www.kernel.org/doc/Documentation/filesystems/vfs.txt

Dentries live in RAM and are never saved to disc:

A directory is also a file (special file). The contents of a directory consists of:

.           inode-number-current-directory
..          inode-number-parent-directory
filename_1  inode-number-A   
filename_2  inode-number-B
et cetera...

Open in new window


Usually this data is stored in data block(s). I say "usually" because some systems may store this in the directory's inode (< 60 bytes). But usually the data is stored in data block(s). If you make an empty directory, then the contents are:

.           inode-number-current-directory
..          inode-number-parent-directory

Open in new window


Usually you will see something like this:

Blocks: 8

Open in new window


8*512=4096 bytes. So 4096 bytes in the form of data blocks are allocated on disk. A dentry is just a directory entry, so:

filename_1  inode-number-A

Open in new window


So dentries are stored on disk. Then how I have to see this sentence?

Dentries live in RAM and are never saved to disc:

If they would only live in RAM, then you will lose all your dentries if the computer restarts? And why they are not stored on disc/disk? A directory usually just shows 8 blocks, this means that it is stored on disk.

Do I make a mistake here or what's behind it?
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Dear Experts,

hope you can help me on this as quick win

I have a windows 2003 OS  Vmware Virtual file server  with only C drive (OS)  and  E drive ( data), this server is not on DFS, it is not clustered, it is accessed by UNC path. It has around 15  folders shared out to windows 10 users

I need to decommission this 2003 OS server and I need you experts to verify my steps please

1) build a new 2012 file server  and name it  "xxx_New"

2) arrange a down time for  2003 file server and
     
      i)   change server name for 2012 File server  to old 2003 file server name in OS 2012
    ii)  change DNS record of 2003 to 2012 OS
     
3)  disconnect virtual disk E and map it 2012 VM
4) power on the 2012 server

am I missing any steps please?

regards
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Can anyone tell me how to configure my Raspberry Pi3 to not blank the screen after no activity please? ie I want the screen to remain active at all times even if there is no activity (it is for a network monitoring tool)

Version: Raspbian GNU/Linux 9 (Stretch)

I'd prefer not to install a "no screensaver" app, I'd prefer to adjust the OS settings if possible please.

Thanks
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I have a couple virtual servers throwing the follow event id 15 errors.

The device, \Device\Harddisk2\DR2, is not ready for access yet.
 The device, \...\DR4, is not ready for access yet.

No issues with the VMs. Curious what this means and how to resolve. Ive seen volumes are missing to the VMs at a OS level think they are connecting to physical storage. not sure at this point.
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Ubuntu graphics crash with Visiontek / AMD Radeon 7750

I have a frustrating and consistent issue with gpu crashes on a pair of brand new systems I just built, both used as Ubuntu-based securities trading and data analysis systems.  Any help or ideas in solving this is greatly appreciated.  In all cases, the system boots perfectly fine and performs as expected until a gpu hang, anywhere from a few minutes to around 24 hours later with an average time to gpu hang of around 8 hours.  Degree of system usage from zero to maximum does not seem to affect time to gpu hang.  Upon gpu hang, the screen freezes, but the mouse can still be moved and non-graphics functionality generally continues, such as music playing.  In all cases, a gpu hang is noted in the sys logs, as shown below.

Each of the two systems has the following brand new hardware:

Intel i7-7820X 8 Core Processor
128GB GSkill Ram
Asus Prime X299A Motherboard
Mushkin 2TB SSD
Corsair RM1000x 1000-watt power supply
Corsair Hydro H115i liquid cooler
VisionTek Radeon 7750 2GB 6x-MiniDP Video Card (#900614)  
   (one video card is brand new, the other is two years old, both identical)
No overclocking used
1 to 3 monitors attached

I have run each of these systems with the following Ubuntu OS / configuration combinations as I worked through trying to solve this Radeon crash issue.  Each produces the same consistent gpu hang / crash as described above:

1.  Ubuntu 18.04.1, default configuration, open …
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outlooktodayOutlook 365 - Outlook Today -  Message center not showing unread count on a public folder.

Hi,

So I've got exchange 2013 and outlook 365 setup. Outlook 365 connects to 2 different exchange accounts, one internal and one external. On the internal one we have a public folder called Client Notes. When I add it to the favorites it will show the unread count next to it. When I add it to the Outlook Today area it doesn't show the unread count. The OS is windows 10 pro, clean install about 3 weeks old. It was working initially but stopped. So far I've googled it and tried all the work offline, download headers then data, outlook /safe, outlook /cleanviews, etc that I could find. This is on the owners computer so I need to fix it so shes happy.

Any ideas?

Thanks in advance
Perry
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Hi,

I have a Mac book pro running OSX 10.5.6 the problem is it is crashing and I need to reinstall the operating system. I don’t have the operating system dvd. I don’t need any data from the device.

So is there any way I can wipe and reinstall without having to get the os dvd?

Thanks

Ward
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I need to upgrade multiple instances of WebSphere Application Server 8.5. And I need a script which can do it for me. Can anyone provide me scripts which goes and updated the fix packs on WAS 8.5.5 running on windows and Linux OS?

Thanks
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This is more of a 'learning request' question.

We are moving into the area of VM's (Better late than never) and have a question about the HOST OS / Server / Hardware.

We are using Server 2016 Hyper-V on a Dell T630 for deployment of VM's
The base server has an iDrac Enterprise and we are deploying a VM as a DC and have created a network connection to the outside world for internet services

Our question is - how do we manage the base server once the DC is up and running. When we RDP into the server we connect to the DC (VM) -  (Which is good) but how do we connect to the BASE server (Base server being the OS running Hyper-V).

I mention the iDrac because we can connect via this method by using the console connection.

If you are wondering why we don't configure the base server as the DC - well we are also deploying an Exchange Server and a 3rd VM to handle Windows updates (Server 2016 DataCentre).

Andy advice would be much appreciated
Thank you
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Exploring SQL Server 2016: Fundamentals
LVL 12
Exploring SQL Server 2016: Fundamentals

Learn the fundamentals of Microsoft SQL Server, a relational database management system that stores and retrieves data when requested by other software applications.

Hi Experts ,

I did export and import for a virtual a mchine from one host to another and it worked fine and the restored machine working propely ..

my Questions :

1- i faced IP address issue with the new one so re assigned the IP manually through the OS .. is there anothery way to solve this issue from the begining or this is how it should go?
2- I want to do another Export for this restored system after some modfication on application level  but  iwant to imorte it to the same host .. will that make any problemfor me? i am just renaming the virtual machine name from inventory so the internal folders as it is.. howerver if no issue to keep both systems on same host i want to keep it simple process
3-my Application vendor is asking for shared (RDM) LUN between the 2 virtual machines for os cluster purpose  ,, can you advise step by step how to do the RDM?
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Hi
We are at a cross roads in what to do with our infrastructure.  Options i see fit are:
Move to a vSan solution on premise or AWS/Azure.

We are a small company c35 users.  We are Vmware and Windows OS house.  HP and cisco networking (some managed).  We also have a live DR site which is a replicas of our HQ.  
We run a number of SQL and Oracle systems.  Slowly migrating some of these out to hosted environment, of which i'm not responsible for and is already painful.

What are techies doing with their VMs, applications and storage?  My gut feeling is to go vsan at both sites (HQ & DR) and replicate with DFS and veeam as we already do, rather than going PAAS or IAAS...?

Thoughts?

Thanks
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I have a client with a windows 10 home edition os. He has come to us asking for a recommendation for encryption software to load on it.
My understanding is that because it is Windows 10 Home Edition, that he cannot load Bit Defender.
I am looking for some feedback as to whether anyone can recommend encryption software for this version of Windows 10 or as we already know, that he has to have Windows 10 Pro for Bit Defender to work.
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SCCM OSD Task Sequence -Windows 7 to 10 in place upgrade has hard stop because of Intel 4600 video driver incompatibility.  How do I remove the video driver before the Upgrade OS step in the task sequence?

I think I need to use devcon to do it, but have no idea how to script it or to run it in the task sequence. ...or is there some easy obvious thing I'm missing?

I've got about 740 PCs with this particular video driver and need to be able to automate this in the SCCM OS upgrade Task Sequence.

Thanks in advance.
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I have Windows server 2012 server which was stuck at Windows logo screen and was not coming up to login screen. It's a VM, so I had to reboot through vcenter since it was stuck. It was pinging as well. Now I need provide root cause analyses as they say it was down for almost 20 hours. What are the logs, I should to provide proper justification
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Dear Team,
   My Domain Controller Sysvol folder is affected by ransomware. DC is working fine now .
How do i recreate the sysvol files. I have only one DC and  no backup.

Server OS is Windows 2012.
I cannot reinstall DC since i have my exchange running.
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Operating Systems

35K

Solutions

36K

Contributors

Operating systems perform basic tasks, such as recognizing input from the keyboard, sending output to the display screen, keeping track of files and directories on the disk, and controlling peripheral devices such as disk drives and printers. For large systems, the operating system makes sure that different programs and users running at the same time do not interfere with each other. The operating system is also responsible for security, ensuring that unauthorized users do not access the system. Operating systems provide a software platform on top of which other programs, called application programs, can run.