Invalid settings detected Virtualbox Host only Adapter solved

1.   This post will help guys stuck with adding a Host only Adapter in Virtual Box.The screen shots are self explanatory in a step wise manner.First screen shot shows the problem as  seen on the screen....rest on how to resolve.

(Invalid settings detected)

(Go to preferences as shown above)

(No more errors)

 

VIRTUAL BOX : SOLVED - FAILED TO OPEN HARD DISK ISSUE

1. I had been an avid follower of VMWARE until recently wherein I have shifted my loyalties to VIRTUAL BOX....simple,easy....and the best part is that it is OPENSOURCE.One problem that I often used to face was that when I copied a VDI file from one place to another...it used to give me a message as shown in the screen shot below that said something like " Failed to open the hardddisk F:\....\.....vdi.So I used to keep trying ways and means but that remained unsolved.But there is a single command line solution to this that goes like this...(also shown in the screen shot).Goto the command prompt first as administrator.

Goto the folder C:\Program Files\Oracle\VirtualBox by typing

c:\>cd C:\Program Files\Oracle\VirtualBox

and then type

C:\Program Files\Oracle\VirtualBox>VBoxManage.exe internalcommands sethduuid "h:\path to the vdi folder\yourvdifilename.vdi"

and this should give a message similar to this 

UUID changed to: 3cfa288c-9e91-42e2-acdc-9821ab9d4aab

(CLICK ON IMAGE TO ENLARGE)

thats it...now open...u should not get the message!!!

Installing Guest Additions in Virtual Box : RHEL 5

1.  In variably I have been using various window OS trials for experimenting in Virtual Box....and yes it is easy to use....but try it out with an RHEL 5.....it became a small fight for me at least.....how i solved it goes like this...

(a) First tried with this :

./VBoxLinuxAdditions-x86.run 

and i was given this error message :

bash: ./VBoxLinuxAdditions-x86.run: /bin/sh: bad interpreter: Permission denied

(b)....the answer is actually this :

sh VBoxLinuxAdditions-x86.run 
or 
bash VBoxLinuxAdditions-x86.run

and the output looks something like this

[root@localhost VBoxGuestAdditions_4.1.8_75467]# ./VBoxLinuxAdditions.run
Verifying archive integrity... All good.
Uncompressing VirtualBox 4.1.8 Guest Additions for Linux.........
VirtualBox Guest Additions installer
Removing installed version 4.1.6 of VirtualBox Guest Additions...
Removing existing VirtualBox DKMS kernel modules           [  OK  ]
Removing existing VirtualBox non-DKMS kernel modules       [  OK  ]
Building the VirtualBox Guest Additions kernel modules
Building the main Guest Additions module                   [  OK  ]
Building the shared folder support module                  [  OK  ]
Building the OpenGL support module                         [  OK  ]
Doing non-kernel setup of the Guest Additions              [  OK  ]
You may need to restart the hal service and the Window system
Installing the Window System drivers
Installing X.Org Server 1.11 modules                       [  OK  ]
Setting up the Window System to use the Guest Additions    [  OK  ]
You may need to restart the hal service and the Window System (or just restart
the guest system) to enable the Guest Additions.
Installing graphics libraries and desktop services componen[  OK  ]

...thats it!!!!!!!!!!!!!