Alright, I did this:
root@devuan:~# mkdir -p /tmp/initrd root@devuan:~# cd /tmp/initrd root@devuan:/tmp/initrd# zcat /boot/initrd.img-4.7.0-0.bpo.1-686 | cpio -idmv 2>/dev/null root@devuan:/tmp/initrd# ls bin conf etc init lib run sbin scripts root@devuan:/tmp/initrd# find . | cpio -o -c | xz -9 > /boot/initrd.img-4.7.0-0.bpo.1-686.xz 281152 blocks root@devuan:/tmp/initrd# ls -l /boot/initrd.img-* -rw-r--r-- 1 root root 14795981 dic 15 08:17 /boot/initrd.img-3.16.0-4-586 -rw-r--r-- 1 root root 15916152 dic 15 07:57 /boot/initrd.img-4.6.0-0.bpo.1-686 -rw-r--r-- 1 root root 16239683 dic 16 09:32 /boot/initrd.img-4.7.0-0.bpo.1-686 -rw-r--r-- 1 root root 11799196 dic 16 11:08 /boot/initrd.img-4.7.0-0.bpo.1-686.xz root@devuan:/tmp/initrd# file /boot/initrd.img-4.7.0-0.bpo.1-686.xz /boot/initrd.img-4.7.0-0.bpo.1-686.xz: XZ compressed data Sadly, booting with the 4.7 kernel and this new .xz initrd didn't work either. On Fri, Dec 16, 2016 at 10:56 AM, KatolaZ <[email protected]> wrote: > On Fri, Dec 16, 2016 at 10:13:05AM -0300, Emiliano Marini wrote: > > > > > I tried the 4.6 kernel with the 4.7 initrd and it almost boot (at the end > > init cannot access the root fs device). But the 4.6 kernel extracts the > 4.7 > > initrd and loads de init process. This leads me to think it's a kernel > > issue. > > > > Tried booting the 4.7 to /bin/sh. Same results. It seems it cannot > extract > > the initrd? > > Yes, it seems that the kernel cannot extract the initrd, because (very > weird!) for some reason the 4.7 kernel you are trying to use lacks > builtin support to extract gzip (???). This looks pretty weird, but > might explain the problem. > > You should try to compress the initramfs with either bz2 or xz. It > seems that xz-utils is not installed in your system, so you should > first > > apt-get install xz-utils > > and then recreate the initramfs again. If xz is available, initramfs > should try to compress the initramfs with xz. Hopefully, the 4.7 > kernel you are trying to install will have at least xz support... > > LetUsKnow > > My2Cents > > KatolaZ > > -- > [ ~.,_ Enzo Nicosia aka KatolaZ - GLUGCT -- Freaknet Medialab ] > [ "+. katolaz [at] freaknet.org --- katolaz [at] yahoo.it ] > [ @) http://kalos.mine.nu --- Devuan GNU + Linux User ] > [ @@) http://maths.qmul.ac.uk/~vnicosia -- GPG: 0B5F062F ] > [ (@@@) Twitter: @KatolaZ - skype: katolaz -- github: KatolaZ ] >
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