artemeciagreen

AQEMU:
File/Advanced Settings
General tab/Installed Emulators
Did you add installed QEMU location in AQEMU advanced configuration?
Reference:
AQEMU setup tutorial with pictures

you can use that of course is as the Stage 3 is compress don't have any problem 
 
but you can use a personal script, I use that 
 
more faster but more size on disk : 
tar -cvpf /stage4.tar.xz --directory=/ --exclude=/stage4.tar.xz --exclude=/dev/* --exclude=/lost+found --exclude=/mnt/* --exclude=/proc/* --exclude=/run/* --exclude=/sys/* --exclude=/tmp/* --exclude=/var/log/* --exclude=/var/run/* --exclude=/var/tmp/* / or that more slow(very slow) but less than half of the other option :
tar -cpvf - --directory=/ --exclude=/stage4.tar.xz --exclude=/dev/* --exclude=/lost+found --exclude=/mnt/* --exclude=/proc/* --exclude=/run/* --exclude=/sys/* --exclude=/tmp/* --exclude=/var/log/* --exclude=/var/run/* --exclude=/var/tmp/* . | xz -9e -c - > /stage4.tar.xz of course you can change the exclude folders and files as you wish.

Is it a good or bad idea to take a syste, backup by running:
tar cpJfv funtooLinux.tar.xz / rather than making an iso image of the partition/disk. Does it matter?

Hey artemeciagreen,
 
Go to your kernel source directory and run "make && make modules_install install" and you will get the bzImage into /boot as vmlinuz-$VERSION, as well as config-$VERSION and System.map-$VERSION
NB: after the first make add -j and the number of CPU cores +1 found when you issue "nproc", such as "make -j9"
 
Now edit /etc/boot.conf to make sure you have at least one stanza where it looks for:

kernel vmlinuz[-v] Here's one of mine:

boot {         generate grub         default "Funtoo Linux genkernel"         timeout 3 } "Funtoo Linux" {         kernel vmlinuz[-v] } "Funtoo Linux genkernel" {         kernel kernel[-v]         initrd initramfs[-v]         params += real_root=auto rootfstype=auto }

Netpdm build succeeded on my system because I had old jasper-1.900.1-r9 installed:
rj@funtoo ~ $ eix -I jasper [U] media-libs/jasper Available versions: 1.900.6(0/1) (~)1.900.18(0/1) **9999(0/1) {jpeg opengl static-libs ABI_MIPS="n32 n64 o32" ABI_PPC="32 64" ABI_S390="32 64" ABI_X86="32 64 x32"} Installed versions: 1.900.1-r9(11:24:04 PM 05/29/2015)(jpeg opengl -static-libs ABI_MIPS="-n32 -n64 -o32" ABI_PPC="-32 -64" ABI_S390="-32 -64" ABI_X86="64 -32 -x32") Homepage: http://www.ece.uvic.ca/~mdadams/jasper/ Description: Implementation of the codec specified in the JPEG-2000 Part-1 standard Update to jasper-1.900.18,  netpbm build breaks. :(
 
rj@funtoo ~ $ sudo emerge -1av =media-libs/jasper-1.900.18 netpbm These are the packages that would be merged, in order: Calculating dependencies... done! [ebuild U ] media-libs/jasper-1.900.18:0/1::gentoo [1.900.6:0/1::gentoo] USE="jpeg opengl -static-libs" 0 KiB [ebuild R ] media-libs/netpbm-10.70.00::gentoo USE="X jpeg jpeg2k png tiff xml zlib -doc -jbig -rle -static-libs (-svga)" CPU_FLAGS_X86="sse2" 0 KiB Downgrade to jasper-1.900.6  netpbm builds. :)
rj@funtoo ~ $ sudo emerge -1av =media-libs/jasper-1.900.6 netpbm These are the packages that would be merged, in order: Calculating dependencies... done! [ebuild UD ] media-libs/jasper-1.900.6:0/1::gentoo [1.900.18:0/1::gentoo] USE="jpeg opengl -static-libs" 0 KiB [ebuild R ] media-libs/netpbm-10.70.00::gentoo USE="X jpeg jpeg2k png tiff xml zlib -doc -jbig -rle -static-libs (-svga)" CPU_FLAGS_X86="sse2" 0 KiB Total: 2 packages (1 downgrade, 1 reinstall), Size of downloads: 0 KiB

Great, this works perfectly. Thanks for your help.