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After the new update of deepin 15.6 this error is showing while booting up.

closed as unclear what you're asking by Rui F Ribeiro, schily, Jeff Schaller, slm Aug 12 '18 at 14:20

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

  • Debian Tag: "Questions specific to the Debian official distribution (stable, testing, or unstable); if you are using a derivative of Debian (e.g. Mint, Ubuntu, Kali, etc), then use that distribution’s tag instead." Deepin NOT Debian... – user8779 Aug 12 '18 at 18:32
  • @arochester Deepin is based on Debian, that's why I used that tag mate. – Avinash Anand Aug 13 '18 at 16:32
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The kernel is not able to access the device that contains the root filesystem.

Possible causes:

  • a typo in kernel boot parameters (unlikely in your case)
  • an error in building initramfs/initrd: either the initramfs has not been built at all, or a driver that is necessary for accessing the root filesystem has been omitted.

If the bootloader menu includes an option to boot with the previous kernel version, try that: the initramfs/initrd file for that kernel version should remain unchanged after the update.

If you can successfully boot with the previous kernel, then check the sizes of the initramfs/initrd files, usually located in /boot: they are usually named something like initrd.img-<kernel version> or initramfs-<kernel version>. If the initramfs file for the new kernel is significantly smaller than the respective file for the older kernel, it is very likely that the new file is incomplete and needs to be recreated.

In Debian and related distributions, you can usually use update-initramfs to recreate the initramfs file. The command should be update-initramfs -u -k <new kernel version>.

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