Oracle VM VirtualBox: Oracle VM VT-x/AMD-V hardware acceleration is not available on your system

I have Dell XPS 13 9350 laptop and I needed to install few virtual machine to it using Oracle VirtualBox software but when I tried to install example Windows 10 or Kali Linux I alwas got error message which said:

“VT-x/AMD-V hardware acceleration has been enabled, but is not operational. Your 64-bit guest will fail […]

Linux: Adjust LCD laptop backlight brightness from command line

I needed to find out how can I change my laptop backlight brighness using just a command line. Solution for that problem was easier than I thought because you can do that just with one line =)

On my laptop which is Dell Latitude D430 brigness file was on /sys/class/backlight/dell_backlight directory but it’s probably almost […]

IP Traffic Monitor already listening on eth0

If you get this “IP Traffic Monitor already listening on eth0” error when you are trying to use iptraf:

IP Traffic Monitor already listening on eth0

Or any other interface like eth1 or wlan0 and so on…

Be sure that you don’t have any iptraf applications running:

ps ax|grep iptraf

and after that you […]

Apple Mac OS X and locked files

I had a client whos Microsoft Windows 7 Fujitsu laptop I had to fix.

I used Hiren’s BootCD bootable Linux rescue CD to copy files from that laptop to my clients external harddrive and everything when without a problems.

When I started to move files from that external harddrive to my iMac (Actually to my […]