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[Bug 1462788] Re: Initrd is not gzip archive

 

I came across this while running 15.04 on a Gryphon Z97 mainboard.

I understand what you are saying about the cpio segments, and the initrd
seems to be in the correct format, but the kernel isn't recognizing it
on boot.  So it fails to load the SATA drivers and can't find the root
filesystem.

I also noticed that lsinitramfs doesn't show the combined form.  If I
copy the initrd over to my debian machine running 0.120 it appears to be
properly formed.

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https://bugs.launchpad.net/bugs/1462788

Title:
  Initrd is not gzip archive

Status in initramfs-tools package in Ubuntu:
  Invalid

Bug description:
  The seems to be an error in the intel_microcode hook for initramfs update.
  This breaks the initrd:

  # file /boot/initrd.img-3.19.0-18-generic 
  /boot/initrd.img-3.19.0-18-generic: ASCII cpio archive (SVR4 with no CRC)

  This is not the expected gzip file. I am not sure now, whether my
  system is bootable.

  Edit /usr/share/initramfs-tools/hooks/intel_microcode. Put an "exit" right after the comment header.
  This will disable the hook and generate a gzipped cpio archive.

  Xubuntu 15.04
  initramfs-tools  0.103ubuntu15

  I also checked an AMD-maschine. No Problems with the initrd.

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References