TechniFul

Whenever a kernel update is installed, your system adds an entry into GRUB. And while booting you can see a very long list, depending on how many updates you have installed. Here is a simple way to clean the GRUB. Open Synaptics package manager. Remove "linux-image-2.6.xxxx" and "linux-headers-2.6.xxxx" corresponding to old kernel images. Update the grub using: "update-grub" If you wish to set a background image for your GRUB, then goto "/etc/grub.d/" and open the theme file(debian_theme) and set "use_bg=false" to "true". Change the WALLPAPER, to point to the desired image(Better use .png file). To apply the changes to the grub: "update-grub"

Don't get panic when you see this thing, and also don't consult customer care or some other repair shop to waste some bucks. Usually this error will be found when you made a unsuccessful attempt of dual booting your Mac with Windows. To fix this error, restart your Mac and hold down  option key, after hearing chime on booting. If you don't want to install windows, then select the Mac Recovery partition. Then from the menu on the top, select the boot disk option and select the drive in which Mac is present. Restart and enjoy... If you wish to install Windows, then insert bootable disk and select the Windows partition that you had created using boot camp, and proceed with installation. In both cases you will be able to boot normally.