View Full Version : unable to boot - This kernel requires the following features not present on the CPU

2013-04-28, 16:34
Hi guys

am Karim from Morocco am so happy to post my problem here in this Forum

look am having a problem i downloaded kali-linux-1.0.3-i386.iso
i tried to make a virtual machine & run kali but an error pop up telling me that

This kernel requires the following features not present on the CPU:
Unable to boot - please use a kernel appropriate for your CPU.
i already have BT5R3 installed & never face this problem of CPU ...

am usign HP compaq 6910p '2 proccesurs Ram: 2G'

please i cherched i find


but is not usefull for me .

any ways Thnx guys for listing
best regards

2013-04-29, 10:24
Does your CPU have PAE ? If it does not building a custom ISO might solve your issue: http://docs.kali.org/live-build/live-build-a-custom-kali-iso

2013-04-29, 10:42
The error you are getting means that your CPU does not support PAE extensions which is a a feature which allows a 32bit CPU to address more than 4GB of memory address space. As suggested by sickness you can try to build a custom ISO.

2013-04-29, 19:00
thnx guys for helping so i should do this in livebuild

Building Kali Linux for older i386 architecture

apt-get install git live-build cdebootstrap kali-archive-keyring
git clone git://git.kali.org/live-build-config.git
cd live-build-config
sed -i 's/686-pae/486/g' auto/config
lb clean
lb config --architecture i386
lb build

but i don't have livebuild (apt-get install live-build) or i should do this in BT5 or ubunto .. distros that already built on debian to make my customize distro

... problem that my HDD has lost die more than week ..so am working form LIVE CD BT5 & i don't have enough memory to do this op ..can any one do this for me

if there any way to install just tools of KALI in ubunto or backtrack :)

2013-05-04, 23:27
i solved the problem :) i downloaded debian whezzly is pretty cool & fat distro i installed livebuild .. i think i will add some stuff to my costumize distro :cool: Best regads Guys