" a critical error has occurred" message

[Sphyrna]

Dear all

I am still a complete newby to VIrtualBox, Ubuntu & CO and hope that someone might be able to help me.
I just installed Ubuntu 13.10 in VirtualBox. After agreeing to "restart to finalize installation", I get the message from VirtualBox - Guru Meditation that "a critical error has occurred while running the virtual machine and the machine execution has been stopped"

The only option I then have is to ignore this (which is not adviced) or to power off the machine. If I do this and start over again, the same thing happens.
I have Windows 7 installed on my computer.

Can somebody please help me??! I'd be very grateful for any advice.
Thank you so much in advance!!

I have attached a log file that was created when the error occurred. I was advised to submit this, and hope it may help

[mpack]

I'm afraid that I see nothing in that log about an error. Also I see no CD/DVD in the virtual drive, which I would expect to see during an install procedure - unless you ejected it before the reset? Speaking of which, I'm seeing a shutdown rather than a reset. Are you sure this is the correct log?

A picture of the error dialog might be useful.

And have you tried starting the VM?

[Sphyrna]

Dear mpack,

thanks a lot for your prompt reply!
Regarding the CD, I created a virtual CD/DVD and put Ubuntu on one of my drives making it look like an installation CD (sorry I am using such amateur language, not sure what the correct terms are ), as I don't have a CD drive in my computer. So this should not be an issue.

Regarding the error, I tried the installation again now. When choosing the installation type, I select "Use LVM with the new Ubuntu installation" allowing me partition resizing. I then get the message in the attached picture "Error message..." telling me that some of my partitions are too small and the installation might fail. When I then go back to re-partition, I get to the screen in the 2nd picture "Re-partition". I have tried all kinds of stuff, but I don't know what and how to re-partition now so that I have enough space to go through with the installation.

Could you please help me once again?

Thanks a lot in advance
cheers

[mpack]

IMHO, using LVM is not a good idea. It's overly complex disk management makes it difficult to perform many low level disk tools, such as increasing the disk capacity, run a third party partition viewer/manager etc.

You "created a virtual CD/DVD and put Ubuntu on one of my drives". What does that mean exactly? Do you mean that you downloaded an official ISO, or do you really mean that you created one? You are correct that using an ISO is fine, not an issue. In fact it's preferred as far as I'm concerned.

[Sphyrna]

Hello,
I downloaded an official ISO, I did not create my own - so this should not cause any trouble.
I have tried yet once again, before I've made some space on the drive on which I have ubuntu, and now there should be enough free space (26 GB).
I do not manage though - I get the attached note, and it refers me to a page where I can report the bug - I am not sure how to proceed from here now though.

Any help would be greatly appreciated as I urgently need the program to work with :-/

Thanks!

[mpack]

That's an error message from the guest OS, not from VirtualBox, which explains why VirtualBox seems happy. It's hard to speculate on what the error might mean, with the information given. In fact you seem to have reported three different problems in one thread, which is rather confusing things.

All right, lets start again. This time I'll need full information about the guest, including whether it's 32bit or 64bit. Post the download link if you aren't sure.

[Sphyrna]

Ok, I'm sorry I am confusing things so much.
My computer has a 64bit Windows 7 system and I would like to use Ubuntu to work with Linux through the Virtual Box.
I downloaded the Ubuntu 13.10-desktop-amd64

So my Windows 7 hence=Host and Linux=Guest?

[mpack]

Ok. You can't install any 64bit guest because the log file says that VT-x is disabled on your host. You need to enable it in the host BIOS, and make sure that nothing else (i.e. Hyper-v) is using it. Also (if you didn't do so) you need to make sure to pick the 64bit template when creating the VM.

Also, I would cut the RAM allocation to something more reasonable for this host, e.g. 2GB (you currently have 4GB).

[Sphyrna]

hello,
unfortunately I can not relly advance any further - I have now decided to use another version of ubuntu to see if that works and if not I will have to revert to using another server we have here and get access to that rather than installing it on my own computer

In any case I very greatly appreciate your help and advice!!

maybe there is 1 more thing I may add (even thought slightly out of context of this message title): One of the programs I need to use does not have a Linux version and I am considering the options I have. Is it best to write a script for my pipeline including all the steps doable in Linux, and then later transferring that to Windows and using Windows command prompt or something similar to do the last bit on Windows? Or might there be other tricks?
Again, sorry that this is most probably a very trivial question, I have no prior experience and am not sure of the starting point to search for my problem solutions.