VMware ESXi 5.1 won’t boot from USB

Installed ESXi 4 onto a USB key some time ago and it works well. Trying to install ESX 5.1 onto a USB key works fine during the installation, but it won’t boot for my white-box server.

Found this posting http://vmtoday.com/2012/09/esxi-5-wont-boot-from-usb which sorted my issue.

Basically the white-box server I had does not support booting from GPT partitions, so a modification to the ESXi install on the USB key as follows:

  1. Boot server with install media (ESXi Installer) and press SHIFT+O to edit the boot options.
  2. In lower left corner of the screen insert a space after the word “runweasel” and type “formatwithmbr”. So it should read “runweasel formatwithmbr”.
  3. Press enter to continue the installation process.
  4. Once the install finishes it should boot from the USB key fine.


Mininet – Virtual Network

Mininet creates a realistic virtual network, running real kernel, switch and application code, on a single machine (VM, cloud or native), in seconds, with a single command.

Mininet is a network emulator. It runs a collection of end-hosts, switches, routers, and links on a single Linux kernel. It uses lightweight virtualization to make a single system look like a complete network, running the same kernel, system, and user code. A Mininet host behaves just like a real machine; you can ssh into it (if you start up sshd and bridge the network to your host) and run arbitrary programs. The programs you run can send packets through what seems like a real Ethernet interface, with a given link speed and delay. Packets get processed by what looks like a real Ethernet switch, router, or middlebox, with a given amount of queueing. When two programs, like an iperf client and server, communicate through Mininet, the measured performance should match that of two (slower) native machines.





Linux Security Audit and Checking Tools

RootKit Hunter


 sudo apt-get install rkhunter 

Run RootKit Hunter:

 sudo rkhunter --check 

Update RootKit Hunter:

 sudo rkhunter --update 

Tiger Security Tool


 sudo apt-get install tiger 

Run Tiger:

 sudo tiger 

View Report:

 sudo less /var/log/tiger/security.report.* 

WinDirStat Windows Disk Space Stats

WinDirStat is a disk usage statistics viewer and clean-up tool for various versions of Microsoft Windows.

On start up, it reads the whole directory tree once and then presents it in three useful views:

  • The directory list, which resembles the tree view of the Windows Explorer but is sorted by file/subtree size.
  • The treemap, which shows the whole contents of the directory tree straight away.
  • The extension list, which serves as a legend and shows statistics about the file types.

More information and reference:


Glances – Eye on your Linux system

Glances is a CLI curses based monitoring tool for GNU/Linux and BSD OS. Glances uses the PsUtil library to get information from your system. As the name suggests it’s a very handy application to fire up and have a quick glance at the systems load including all components such as CPU, Memory, Network, Disk, Sensors and more.




sudo apt-get update
sudo apt-get install python-pip build-essential python-dev
sudo pip install Glances

To run Glances, just open a terminal and type glances:


You can also run it in a client server mode, for remotely monitoring a system. More information and reference:





FF Multi Converter – Convert audio/video in Ubuntu/Mint

FF Multi Converter is a simple GUI application which provides one-stop solution for  converting files. It can convert video, audio, image, and document by using some open source libraries. It uses FFMPEG for converting video and audio, PythonMagick for converting image, and unoconv for converting document. FF Multi Converter provides an easy way to convert all multimedia files in one place!

sudo add-apt-repository ppa:ffmulticonverter/stable
sudo apt-get update
sudo apt-get install ffmulticonverter


Ubuntu One indicator

Install the Ubuntu One Indicator to access and manage your Ubuntu One account with this indicator. It displays the current information of your Ubuntu One account.

To install UbuntuOne-indicator in Ubuntu/Linux Mint open the Terminal (Press Ctrl+Alt+T) and copy the following commands in the Terminal:

sudo add-apt-repository ppa:noobslab/indicators
sudo apt-get update
sudo apt-get install ubuntuone-indicator 

Reference and more details at Noobslab: