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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Are there any known tools like advanced IP scanner I can use to scan the network and report OS?  I want to do a workstation survey and find out which machines currently on the network I am connected to are running Windows 7.
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OWASP Proactive Controls
LVL 13
OWASP Proactive Controls

Learn the most important control and control categories that every architect and developer should include in their projects.

Dear Experts,
I have installed Java 1.8 in a Red Hat OS Server at separate location(/data/inout/crm) from root folder. (Root folder is at an older version of Java 1.7 and is not very useful)
Now I need to import a TLS cert in the Java Keystore to this location (/data/inout/crm).
I know the command to be used is :
 keytool -importkeystore -deststorepass [password] -destkeystore [filename-new-keystore.jks] -srckeystore [filename-new-PKCS-12.p12] -srcstoretype PKCS12

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How do I make sure that it is imported to Java 1.8 and not to Java 1.7  in the root

Thank You
Flex
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Hi There,
I am running a server 2012 r2, of which I broke up the nic team to test performance difference. Now I am stuck with a virtual ethernet adapter that I need to remove in order to redo the teaming. The cmdlt for "vmnetworkadapter" is not working.
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Hyper-V ran out of space so I deleted a total of 300gb of old SQL transaction log files and old database.
I now have 300Gb of free space on the Hyper-V but the physical host drive is still out of space. Why and how do I get the 300gb of free space back on the physical disk.  FYI. The host server has a total of 900gb. The drive is partitioned into a C: drive for Windows OS (200gb) and a D: drive for the Hyper-Vs
(700gb). The D drive keeps running out of space and then shuts down my Hyper-Vs. I thought after deleting 300gb off the Hyper-V that it would also give the 300gb back to the host D drive. Desperately need help and please give step by step instructions.
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How do you get into SAFE MODE on a PS4 with a broken Power Button?  I can't believe there is no other way to do it...but the unit keeps shutting off and I want to reinitialize the OS on a new hard drive.
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I have an iMac that I am getting ready for sale.  Once I return the unit to the beginning
how do I reinstall the OS?  I want to make sure that all of my data is removed.
thanks,
capreol
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Is there a good tutorial or explanation of the RDN (Names) Identifying the various Groups and Users I have listed here. I assume some are defaults and some may be OS specific and others specific to applications I have installed. I understand a fair amount about users and rights however.

My goal is to understand the following better:

ANONYMOUS LOGIN
Authenticated Users
CONSOLE LOGIN
CREATOR GROUP & OWNER
DIALUP
HomeGroupUser$

I am curious to know the differences between:

INTERACTIVE & ISUR
Local Account vs Local Account & Member & Administrator Group
NETWORK, SERVICE, SYSTEM
Owner & OWNER RIGHTS
REMOTE INTERACTIVE LOGON

I assume that the "In Folder" means that the Name RDN (image below) is included in the Permissions setting. Therefore the member of the group or the specified user has permissions to use RDP. I used to set up Business Objects Enterprise Users Groups Object and Folder Rights. So I have basic understanding.
Any direction "pointable" is appreciated. Thank you.
What I am hoping to understand better.
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Found something strange on an Older PC (8 years old Vista for Business) that I cannot figure out. I have a Hard Drive that is almost at capacity and I cannot figure out what is filling the HD up. I was hoping to recover the space and use it for new projects and ventures. The image shows less than a GIG when the folder is open. However looking from the Computer's File Explorer you can see it is near capacity. I know what hidden files are but cannot seem to figure out why I cannot see them if they are there. Hoping to salvage some space.
A few notes:
1. The drive was COMPRESSED. Did not know that. So not sure what UNCOMPRESSING might do? Since there is clearly not enough room to expand on that HD. Might be able to send to another?
2. That machine has slowed a bit and suspect that it may have something to do with that. OS is on C but I think that something related to the OS is on D:\ May just be restore points or backups. Of course I cannot see them?
3. The Drives are individual and not partitioned from what I can tell. See second image.
Why can't I see these files. File sizes do not match and I cannot tell if files are Hidden? BaffledThree separate Hard drives.
three hd's
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I have a 21.5 i5 iMac that I want to sell.  (5 years old and hardly been used possibly 6 months).   How do I reinstall the OS so that all of my files are completely no longer
accessible on this computer?
thanks,
capreol
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I have a server which we will be retiring because of age. The OS on the server I am retiring is MS server 2008. The OS on the new server is MS Server 2016

The new server will take over the same domain name and IP address as the old one

Does anyone have any tips to make this process run as smooth as possible?

My plan is to make sure I have a local administrator password on the old server then remove it from the domain
Remove the server from Active directory
Change the name and IP address of the new server
0
Become a Certified Penetration Testing Engineer
LVL 13
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.

We have Windows Server 2019 installed on a latest generation Dell Optiplex.  (We needed server OS capabilities without the server hardware.)  

The machine has a SSD on SATA0 and HDD on SATA1.  They are both installed at the factory by Dell.  The SSD has the OS and HDD has the data storage.  No RAID.  Drives connected to board.

The installation completes without an issue.  We double check the BIOS and drivers from the Dell website and update.  The machine is setup and placed into service without issue.

After a few days, we find that the HDD is not showing up in Windows nor Disk Management.  We are of course shocked and reboot into BIOS.  The drive is showing fine.  We have enabled to report SMART error reporting.  It physically seems to be fine (not hot, making noise, et cetera).  

We return to Windows Server 2019 OS and the drive is back and working like nothing happened?

This has now happened twice -- the drive disappears out of the blue in the OS and a reboot makes it reappear.  

I'd be more than happy to replace the drive, but is it the drive?  OS?  Board?  SATA Port?  Other?
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Hi there,

I want to multiboot windows , ubuntu and android on my laptop hard disk

Can I multiboot android os alongside the other operating systems.

Also is it possible to boot to android os in multiboot mode.

Would I need to edit bcd to get android os to be added to mulitboot screen
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I was planning to create windows pe boot media and add windows os, ubuntu, android and acronis iso for installation from usb.

Which is the best usb multiboot  to that. ?   And also I want to load pc technician utilities on the win pe usb boot disk.  

Also what about microsoft windows pe boot builder , is it easy to create pe boot disk using their aik kit.
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My small business is getting a Dell Poweredge T440 and we were advised to use Raid 1 for the OS and Raid 5 for the other drives.

We are going to get 8, 3.5 inch slots for HDs. OS will use 2 drives and Raid 1. Then we want 4 drives to be set up with Raid 5.

Does this give us 4 drives and 2 "hot spares"?
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I am trying to installing multiple instances of operating systems.

My installation sequence will be as follows

1) Windows 7 Home
2) Windows 7 Ultimate
3) Windows 10 Pro
5) Ubuntu Linux
6) Android Operating system (phone version) May os 6.0 or later

I can multiboot to windows oses,  
My question is

how to install  Ubuntu Linux and multiboot it with windows oses.?
how to install  Android operating system on the laptop and get it to multiboot along with windows and ubuntu.

Can you also please provide me a link to download android os phone version and ubuntu linux so I can install it on my laptop.

Thanks in advance
0
Hi,

I have an OKI ML5521 dot-matrix printer. It doesn't have a driver for Windows 10 but the manufacturer website suggests that it will work on Win 10 and/or Server 2016 by using the windows 7 drivers.

For several years it has been installed on a windows 10 server, plugged into the USB port, with no issue.

Have now migrated to a new server running windows server 2016 (as a guest OS on another server 2016 hyper-v host)

I tried to install the printer driver using OKI software installer, but when I did it, there was no option to select a USB port as the method of connecting the printer, so it failed to work correctly. Some reading around the subject lead me to believe it's because I shouldn't have attached the USB cable before installing the drivers. So removed the printer, rebooted and did it again.

Second time around was able to install the printer using OKI driver software and select USB as an option. The printer exists in Server 2016 but when I print to it, nothing comes out. If I open the printer queue I can very briefly see a document appear in it, but it disappears instantly with no output. Does't matter if I print from a document, or use the 'print test page' option same outcome. Tried uninstalling, reinstalling etc to no avail.

I have previously installed another laser printer which is a LAN printer with no issues whatsoever and it continues to work ok.

How can I troubleshoot / resolve the inability to print to this USB attached printer?

Thanks,
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How do I copy (move is OK) single photo from iPhone [iOS 12.1.4] to Mac OS Mojave [Mac OS 10.14.3] with minimum effort. No 'Continuity Camera', No Air Play, No iTunes.

Click 'n Drag would be ideal, but likely not possible :-) - I do this infrequently and would like simple method to get 1 photo from iPhone to Mac OS. Copy to Desktop/Folder OK - just want simple method. iPhone is connected to Mac with Lightning/USB cable. Seems Apple must have solved this...

I have spent too much time with no photo copy/move - Help!!
0
We have several Windows 7 OS workstations that when running updates, a message appears indicating "Failure configuring Windows updates. Reverting changes."  Is there an easy fix to this so that the workstation can receive updates?
0
Hello,

I have an A/V question. I just mounted 5 LG TV's in a few offices. I terminated each end to a HDMI keystone, and the length of the HDMI run is approx. 15 - 20 ft. I'm connecting the PCs to the TVs as a third monitor. Of the 5, two are working without an issue, but i'm having issues with the other three. The OS and the graphics card is detecting the TV as a third display, but after choosing the correct input on the TV, it's still displaying "no signal". This is the case for all of the displays that aren't working.

Any advice or guidance will be helpful!
0
OWASP: Avoiding Hacker Tricks
LVL 13
OWASP: Avoiding Hacker Tricks

Learn to build secure applications from the mindset of the hacker and avoid being exploited.

Hello Powershell Experts,

I need some help generating a table to display results of a Powershell script.  The script basically checks our servers for drive space.  The code of the script is as follows:

Get-ADComputer -Filter {OperatingSystem -like '*Windows Server*'} | Select name | sort name | ForEach-Object {
    $PingTest =Test-Connection -ComputerName $_.name -Count 1 -Quiet 
        if ($PingTest -eq "True") {
            Get-WmiObject win32_logicaldisk -ComputerName $_.name -Filter "DriveType=3" -ErrorAction SilentlyContinue | `
                Select-Object `
                    @{n="Server";e={$_.SystemName}},`
                    @{n="Drive Letter";e={$_.DeviceID}},`
                    @{n="Volume Name";e={$_.VolumeName}},`
                    @{n="Total Size (GB)";e={"{0:n2}" -f($_.size/1GB)}},`
                    @{n="Free Space (GB)";e={"{0:n2}" -f($_.FreeSpace/1GB)}},`
                    @{n="Used Space (GB)";e={"{0:n2}" -f(([Int64]$_.size/1gb) - ([Int64]$_.FreeSpace/1gb))}},`
                    @{n="Percentage Used";e={"{0:P2}" -f((1-[Int64]$_.FreeSpace/[Int64]$_.Size))}} 

        }

}

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This returns the desired information in a list format.  If I add the format-table commandlet at the end, it almost gives me what I want.  Below is the code and the results:

Get-ADComputer -Filter {OperatingSystem -like '*Windows Server*'} | Select name | sort name | ForEach-Object {
    $PingTest =Test-Connection -ComputerName $_.name -Count 1 -Quiet 
        if ($PingTest -eq "True") {
            Get-WmiObject win32_logicaldisk -ComputerName $_.name -Filter "DriveType=3" -ErrorAction SilentlyContinue | `
                Select-Object `
                    @{n="Server";e={$_.SystemName}},`
                    @{n="Drive Letter";e={$_.DeviceID}},`
                    @{n="Volume Name";e={$_.VolumeName}},`
                    @{n="Total Size (GB)";e={"{0:n2}" -f($_.size/1GB)}},`
                    @{n="Free Space (GB)";e={"{0:n2}" -f($_.FreeSpace/1GB)}},`
                    @{n="Used Space (GB)";e={"{0:n2}" -f(([Int64]$_.size/1gb) - ([Int64]$_.FreeSpace/1gb))}},`
                    @{n="Percentage Used";e={"{0:P2}" -f((1-[Int64]$_.FreeSpace/[Int64]$_.Size))}} | Format-Table

        }

}

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1
I need assistance repairing my Windows 7 OS.

It is a VM I am accessing through VMware Workstation. I am receiving this error loading the OS: "No operating system found."

Can someone guide me through the steps on repairing the OS?

Thank you.
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When I try to power on my vmware vm, I get error, "No operating system found".  Here's a screenshot of the file.  I can't find the correct file today suddenly.  Any assistance is appreciated.  When I click on the highlighted file, Windows does not find the SW to open it.
Thank you,
Mark
where-is-the-vm-file.PNG
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Obviously by my question, all will know that I am Apple illiterate.
I have a client that has a MAC Apple computer and the password no longer works.
I have done the following:
Booted to Recovery Mode
Ran Utilities - Terminal Mode typed resetpassword
Choose user [only one user present, and it is the user I want to change the password for]
enter password for otheruser@iclod.com. [I think this may be an Apple ID]
This is where the problem occurs, The "other user" is no longer with the organization, and has no recollection of ever having created the ID. [I think that this computer was the first Apple that "other user" had anything to do with.

Is there anyway to recover  or revoke or replace the current other user@icloud.com?  Would it make sense to try wipe the computer and start over with a fresh install of the OS?  Obviously any data that may be on the computer is lost if the password cannot be reset.  Can the computer operating system be restored without knowing the information for "other user"
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We have an application that has to run on a client OS, currently running on Windows 10.  We need this to be always on.  Is there a way with VMware or some third party product to have a failover setup with Windows 10 that will failover to an identical machine with the same IP should this one go down?
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Dear Friends,

I would like to know how can I increase the space capacity of OS Drive (c:), This  is a virtual machine hosted on Open stack. I asked the service provider  he said its not possible. Is there any alternative for this situation. Log files and DB is already on other drive. Please suggest me solutions. Thanks
Please suggest me how can I deal with this situation. This is an production environment.
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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.