Operating Systems





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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Failure with TimeMachine backups. OS Problem?

I had an external disk fail to complete the Time Machine backup with no error message, that I can find. I eventually started afresh using Disk Utility. BUT it still failed!

On another front, I have been told I should re-install the underlying OS on my machine, which I am afraid to do without a current backup!

I do use Cloud based Carbonite, but do not feel safe until I have a hard external backup disk.

The reason I was advised to re-install my OS was that while using Finder, incrementing through my pictures, sometimes the cursor jumps to the end of the list. I did try some small instruction on Mac start-up, if I recall, that involved holding down certain keys.

There was a second instruction, but I sadly can on longer find that post.

So, the last suggestion was to re-install the underlying OS. And it seems I am there right now.

Can anyone suggest a nest step for me?

I can not make a current backup of my machine.

Free Tool: Site Down Detector
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Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Hi Team,

We use USB Buffalo DVD drives in our environment on our Wyse THIN OS 3040 devices. We also installed latest driver on citrix servers, still when we try to connect to citrix session it showing an error in device manager as STATUS _DEVICE_POWER_FAILURE(This device cannot start. Code10). Tried installing latest drivers but still problem remains same.

Is there something i am missing, or any other driver need to be installed? Can someone help me here.

Thanks in advance, your help is much appreciated.
Windows 10 hangs at blue cursor circle. At first, I knew this to be the 1803 update, and did a system restore and shut off all pending updates. However, now anything that installs updates (Adobe, autodesk, etc) gives me the blue hanging circle of death on a black screen. How can I fix this permanently?

I have tried start up repair, installed new Windows from scratch. Nothing seems to fix this issue.

SOMETIMES, if I restart the PC while pressing Shift+F8, it boots normally.
on windows os (7,8,10)

what are all the ways to find pdf files

I am asking someone to search their computer(s) for me to find pdf files
This was setup in the past but the person that set it up is no longer with us and since we have upgraded the OS  to 2012 R2 and it was setup on 2003 TS. We got rid of the 32003 and added 2 new terminal servers with 2012 R2

We need to setup the following for users,,,,, Multiple users that log into one just one account and from that account they have access to their emails through a drop down tag, the dropdown has all of their names on it. When they choose their name it will pop up and ask them for a password

So basically we need an icon setup on the terminal server so that once the users login with the same single account, they can then click on the mail icon and see there name and select it to and have it prompt them for their password to their email account in exchange.

Does anyone know the steps on how we can set this up?

I am looking to set up a Linux virtual server in Hyper-V.  Where is the best\legitimate source of getting the Linux OS?


We have ESXi 5.5 on which I want to automate the deployment of an OS (W10), I created a VM which should boot from a DVD automatically.
It does that, but not before I do 2 manual actions (see screenshot below). How do I configure the VM to do this automatically?
This worked fine with normal BIOS but since I have set it to EFI, it does not work anymore.

Note: first time it should boot from DVD, but only first time (since after that it should load the OS which is being installed):
Good day-
I have an Ntfs volume from a failed server 2003 (not a typo). The volume was RAID1 and a member file server.

Ntfs permissions are keeping me from accessing previous versions - although I can see the previous versions thru explorer.

Any tools you can think of or am I dreaming?
can an installed .exe file on windows os see all my key strokes
I have a custom made .exe file that appears to me to run correctly
but may have additional secret permissions

by installing any program
could a keylogger be built in

dont just tell me to run virus scan
Some users report an inordinately high number of account lockouts.  Review of the NETLOGON service activity on the domain's PDC emulator shows a large number of bad password errors from computers that do not exist on the network, sometimes involving accounts that don't exist or are no longer active.
In order to track down the sources of these authentication attempts, we need to store copies of the Security Event Log on the domain controllers. This will both alter the data being recorded to better target interesting events and replicate that data to another server for further analysis.

Can you please then assist to have to create and link a GPO that configures audit logging and event forwarding on all domain controllers and any selected servers.
Cloud Class® Course: CompTIA Healthcare IT Tech
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Cloud Class® Course: CompTIA Healthcare IT Tech

This course will help prep you to earn the CompTIA Healthcare IT Technician certification showing that you have the knowledge and skills needed to succeed in installing, managing, and troubleshooting IT systems in medical and clinical settings.

Does anyone use Essentials anymore and if so why? What are the benefits for a small company of 10 or less people.

I've been using Server 2016 Standard more often for small businesses with 1VM as the PDC and the 2nd as Exchange. Have a client already on Office 365 thinking Essentials is the way to go. A concern is they may need an additional server, am I correct Essentials doesn't come with any VM's options and we would have to purchase another server?

Client also likes the remote access they had prior in SBS, this is an add on, correct?

Finally, am I correct and the 25 user CAL's are included in Essentials?
Lenovo E560 w/ Samsung 860 500GB SSD.  Laptop boots fine about 10 times in a row and then blue screens and won't recognize the 860 as a boot device. The OS is still there. I've updated all the firmware and drivers. Anyone else have this issue?
looking to connect to rds broker via hp thin client t510 (windows CE 6.x)

i cannot locate anywhere to input load balance URL.

do i need to re-image the box with HP thin pro OS? is this a limitation of Windows CE 6.x?
Bom dia,

Necessito de uma ajuda, estou trabalhando com o excel recebendo dados de um sistema de supervisorio indusoft a versão (IWS 8.001), estou armazenando dados no excel, esta funcionando ok, gostaria de saber como e que eu faço para ler os dados armazenados declarando a coluna e a linha que eu quero que o excel exposte para o software de supervisão

Option Explicit

Sub Excel1()

Dim xlApp, xlBook, xlSht
Dim filename, value1, value2, value3, value4

On Error Resume Next

filename = ($GetAppPath() & "Formula.xls")

Set xlApp = CreateObject("Excel.Application")
Set xlBook = xlApp.WorkBooks.Open(filename)
Set xlSht = xlApp.activesheet

xlApp.DisplayAlerts = False

'write data into the spreadsheet

xlSht.Cells($Relatorio_Ind.cell_envia_dia,7)= $Relatorio_Ind.contaminacao_dia
xlSht.Cells($Relatorio_Ind.cell_envia_dia,8)= $Relatorio_Ind.KART_dia
xlSht.Cells($Relatorio_Ind.cell_envia_dia,9)= $Relatorio_Ind.energia_dia
xlSht.Cells($Relatorio_Ind.cell_envia_dia,10)= $Relatorio_Ind.RecFab_dia
xlSht.Cells($Relatorio_Ind.cell_envia_dia,12)= $Relatorio_Ind.KgAcKgATR_dia
xlSht.Cells($Relatorio_Ind.cell_envia_dia,14)= $Relatorio_Ind.DispIndu_dia
xlSht.Cells($Relatorio_Ind.cell_envia_dia,23)= $Relatorio_Ind.IndiciePreparo_dia
xlSht.Cells($Relatorio_Ind.cell_envia_dia,24)= $Relatorio_Ind.TaxaEmbeb_dia
xlSht.Cells($Relatorio_Ind.cell_envia_dia,25)= $Relatorio_Ind.UmidadeB_dia

Good evening,

I have a laptop that is not booting up.  I have attached a picture of the specs.  It is a windows 10 OS.  What is he best way to get this repaired?
HI im going modifying the windows 2008 server r2 registry for some application purpose, as recommended
currently this a workgroup server/standalone server in the c:\ 40gb space is left over.

How can it take the backup of registry, whole OS
what is the easiest process to rebuild the OS or registry incase of OS Crash

and recovery should be easy/fast, we CANT use the thridparty sw tools
In recently, we find out some win10 pc does not
After rebooted, it return to normal.
Why? How to solve it?
Pls. help
What does this exception mean? How do I solve this?

INNEREXCEPTION MESSAGE: Invalid viewstate. Client IP: Port: 56646 Referer: https://secure.mdg.com/Search.aspx?search=Ac&PID=mdgusahomepage Path: /Search.aspx User-Agent: Mozilla/5.0 (iPhone; CPU iPhone OS 10_3_2 like Mac OS X) AppleWebKit/603.1.30 (KHTML, like Gecko) CriOS/66.0.3359.122 Mobile/14F89 Safari/602.1 ViewState: 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...
EXCEPTION TARGETSITE: Void ThrowError(System.Exception, System.String, System.String, Boolean)
EXCEPTION GETTYPE: System.Web.HttpException
EXCEPTION STACKTRACE: at System.Web.UI.ViewStateException.ThrowError(Exception inner, String persistedState, String errorPageMessage, Boolean macValidationError) at …
How to restore MSSQL 2012 Database server after OS crash c: drive. The data drive ( e:)   is ok where the database is stored, including the master database.  I have reinstalled mssql 2012 on new server and mounted e drive. I installed new mssql on c: drive. I then tried to change the settings where  the master database is located  to e drive from thenew install and it did not work. Any ideas how to do this. One other note. I do not know what service pack is installed if any.
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how to get the SwapTotal for solaris in C or C++?
Good day experts.  
Updating AIX 7.2 to the latest SP.   I currently have a two node cluster running PowerHA 7.2    I am not upgrading PHA just AIX.  All of the resources(database) are running on the backup node.   Before I update AIX, I know I need to stop the cluster services but should I Bring resource groups Offline or Unmanage resource groups on the node NOT having the resources active?    I just need a little explanation on either option and why not to use the one NOT chosen.

Thank You.
Searching network folder and files from High sierra OS is not giving results. Please advise how to resolve this issue
We are are a single site, single domain with 70 users. We still run our servers in house. I have a dedicated server running Exhange 2010. It's a Dell Powerdge T430 with 32GB RAM and 5 SAS disks on a single H710 controller card. One channel runs 2 x 136GB disks in a RAID 1 array that contains the OS, exchange program files and the logs. The other channel runs 3 x 300GB disks in a RAID 5 array that contains the information store.

The server is 4 years old now and i am planning to replace it in the next few weeks. When i get the new server i will be moving to exchange 2013. Why not Exchange 2016 i hear you ask? We only have CALS for 2013 and as this is probably the last exchange server we will have in house before moving over to the cloud it doesn't make sense to upgrade the licences.

I would appreciate some advice on the disk configuration for my new server. I'm inclined to go for a Dell T440 with 32GB RAM. However my disk choices last time were based on some best practice info that may well be obselete now and overkill for my set up. Can anybody advise whether for my level of users i could get away with 2 x decent SAS disks in a RAID 1 array to run everything or do i need still need to segment the logs and store even at my low level of usage?
best free software to transfer all files from android to PC using WiFi
Hello, Guys, I am to ask query actually I am little confused either I use a software to convert my EML file to Yahoo for Mac OS. I have downloaded a software tell its good not to use I had downloaded it from here: https://www.mailvita.com/eml-to-yahoo-importer-for-mac/

Operating Systems





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.