How Can Linux Mint Prompt For A Username With Every Desktop Login?

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Problem Scenario:  When logging into Linux Mint, the first and only field for text is a password prompt.  The corresponding username is not shown.  You do not understand this.  How do you get Linux Mint to prompt for a username?

Solution
Log in with the password of the user who just logged in.  Go to Menu -Administration -Login Window.  Uncheck “Automatically select the last logged in user.”  (When this setting is checked,

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How Do You Use Putty To Connect To A CentOS Server (A Guest VM running on Oracle VirtualBox on a Windows Host)?

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Problem scenario:  You have a Windows 7 host with Oracle VirtualBox.  You have a guest CentOS Linux virtual server.  How do you connect to a CentOS VM using networking?

Miscellaneous:  If you are looking for directions on how to give a Linux guest access to the Internet, these directions will work (assuming the host is running Windows).

Solution
#1  In Oracle VirtualBox go to Devices -Network -Network Settings. 

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How Do You Download a File With PowerShell When You Get the Error “Not enough space on disk”?

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Problem scenario
You are using PowerShell 3.0 on Windows 7 and you try to run the PowerShell command start-bitstransfer to download a large file.  Running start-bitstransfer results in an error that says “Not Enough space on disk.” 

Solution
Verify the size of the file.  See if the destination directory/drive has sufficient space.  If this error happens despite there being ample space available in the destination drive and destination directory compared to the size of the source media, 

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Oracle VirtualBox Client (or VM or virtual Linux server) Has No Internet Access

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Problem scenario:  You are running Linux 7.x in Oracle VirtualBox on a Windows Professional 7 laptop.  In the Linux server, you try to ping an IP address.  You get “connect: Network is unreachable.”

Solution

1.  In the Oracle VirtualBox window of the server, go to Devices -> Network Settings -> Adapter 1

     a) Go to Attached To: and choose “NAT”

b) Check the box for “Cable Connected”

2.

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How Do You Create Bootable Media with an .iso File That Is over 7 GB?

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Problem scenario:  You want to install Linux on a laptop or workstation.  You need to create bootable media with an .iso file that is over 7 GB.  CDs and DVDs cannot support 7 GB.  What do you create a bootable USB stick?

Solution
This assumes you have downloaded the installation media (the .iso file) to your computer.  For .iso files that are over 8 GB, you may need a USB stick that is greater than 8 GB. 

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How Do You Convert A Windows File System On One Drive To Be NTFS?

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Problem scenario:  You have a drive “H:” that is using FAT32.  You want to conver it to NTFS.  You open PowerShell as Administrator.  You delete the files on drive H:.   You run this command:

convert h: /fs:ntfs

You see this message “File and folder verification is complete.”  It hangs and never completes.

Solution
Do not use PowerShell.  Follow these three steps:
     #1  Open a regular (non-PowerShell) command prompt.  

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How Do You Set Up a Shared Drive or Folder Using Oracle VirtualBox?

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Problem scenario:  You want to transfer files between a host machine running Oracle VirtualBox and a guest server.  By sharing media, your Oracle VirtualBox is much more useful.  How do you configure a folder to be shared between the host machine that runs Oracle VirtualBox and a virtual guest OS?   

Solution
These directions are for Oracle VirtualBox running on a Windows 7 Professional host with a guest virtual server running Linux,

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How Do You Install VirtualBox Guest Additions on a Linux Guest Server when the Files Are All Missing From the .iso?

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Problem scenario:  You are trying to install Guest Additions on a Linux server.  You mount the CD/DVD/.iso through Oracle VirtualBox to /media/VirtualBoxGuestAdditions.  On the host virtual server the /media/VirtualBoxGuestAdditions (the directory where the CD/DVD/.iso was mounted) has no files.  You try to unmount the device and remount the device.  But you see no files. You are unable to run “./VBoxLinuxAdditions.run” because the file is not where it should be.  What do you do to solve this problem?

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How Do You Troubleshoot yum Command Failures with the Error “File /var/cache/yum/i386/7/epel/metalink.xml does not exist”?

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Problem scenario:  yum commands are failing.  You get this error after running a yum command:  “File /var/cache/yum/i386/7/epel/metalink.xml does not exist”

Solution
Remove EPEL. Use this command: “yum remove epel-release”

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