kernel or initramfs seems to have intermittent kernel panic at boot time. I have had these on & off over many kernels/upgrades. Many times, this problem seems to go away after a few hours or days. Till then, I dual-boot one of my other systems.Initramfs unpacking failed: junk in compressed archive Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) CPU: 1 PID: 1 Comm: swapper/0 not tainted 4.6.0-1-686-pae #1 Debian 4.6.4-1 ... Kernel Offset: disabled ---[ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
I suspect this happens more with the
testing flavours, than with stable. I keep trying occassionally if debian kernel would boot without the kernel panic. If could boot atleast once, then I update my initramfs by# update-initramfs -uv
Most times, this has resolved the issue.
This time, the problem seems to have continued far longer, probably because I am continuously using the system, and trying to reboot into this kernel very often. I have noticed the problem goes away, if I power off the system and come back after a few hours or days.
So, I tried to boot the alternate kernel
/vmlinuz.old. And it booted clean :)Thus the problem is further narrowed down to the current kernel, in this case
linux-image-4.6.0-1-686-pae.There are two methods to
update the initramfs of an installed-kernel on debian systems.Debian Kernel Handbook recommends
# dpkg-reconfigure linux-image-4.6.0-1-686-pae
Alternatively,
# update-initramfs -u -c 4.6.0-1-686-pae
ref: http://kernel-handbook.alioth.debian.org/ch-initramfs.html#s-initramfs-regen
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