Uninstall VirtualBox Guest Additions on Ubuntu and Windows 7

Ubuntu: To uninstall VirtualBox Guest Additions on Ubuntu and similar operating systems, mount the virtual disk again that you used to install them - to do that, click on the Devices menu on the virtual machines top menu bar and select Install Guest Additions. If you get a pop-up about auto-start procedures just cancel it. ... Read more

Convert Linux deb and rpm packages into the respectively other format with alien

Sometimes you are forced to compile packages from source because they are not present in your current distribution's package format, which can be really annoying. While this is the safer option, there is also a quicker alternative, which is converting existing packages into the one you need with alien. sudo apt-get install alien Before you ... Read more

Set lightdm wallpaper that is independant of the user’s wallpaper (Ubuntu/Linux Mint)

Using lightdm, the wallpaper that is shown is usually the one used by the selected user. If you want to change this or just set a static wallpaper for your login screen, there are a few possibilities to do that. 1. Method The first one is to make your wallpaper inaccessible to others, letting lightdm ... Read more

Restore GRUB bootloader after Windows installation on multi-boot system

Windows operating systems have the habit of installing their own bootloader on every installation - this wouldn't be a problem, if they would recognize all present operating systems. But unfortunately, they only recognize other Windows systems. Apart from installing EasyBCD and other tools on your Windows partition to set things right, you can also just ... Read more

How to Manually Install New Cinnamon Themes (Linux Mint/Ubuntu)

To manually install new themes for cinnamon from the page provided by Cinnamon Settings, first backup the data of the original theme by opening a terminal and entering sudo cp -R /usr/share/cinnamon/theme /usr/share/cinnamon/theme_backup Then download and unpack another theme from http://cinnamon-spices.linuxmint.com/themes, save the files to some location - I will save them on my desktop. ... Read more