Re: System won't boot anymore after upgrade to jessie
Greg Wooledge wrote:
> Moreover, the simple zcat|cpio -i no longer works with stretch's initrd
> images. They're in a different format, and you have to use
> lsinitramfs or unmkinitramfs to see or extract their contents.
> On a jessie system, the zcat|cpio -i may still work (not sure about
> backported kernels though).
I just tested it on stretch
/boot/initrd.img-4.14.12eko4: gzip compressed data, last modified: Tue Jan
9 22:45:46 2018, from Unix
$ zcat /boot/initrd.img-4.14.12eko4 | cpio -id
so if it is gzip format it works perfectly - what format do you mean?
If you look into /usr/bin/unmkinitramfs it is a shell script
but anyway - good hint