vfs unable to mount root fs on unknown-block

Discussion in 'Getting Started' started by ZTPro, Apr 21, 2014.

  1. ZTPro

    ZTPro New Member

    Apr 15, 2014
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    I am new to Linux. First, I state what I'm going to do:
    I have a CentOS installed. I want to make a ramdisk which contains files/programs I need, and then boot this ramdisk to memory as a basic linux system. I copy the dir /bin, /sbin, /dev and so on from my CentOS, and use cpio to create a image (myramdisk.img) and use lzma to compress it, then use vmlinuz to boot myramdisk.img.lzma. After booting the kernel, it freeze at "VFS: unable to mount root fs on unknown-block...kernel panic". Looks like the kernel doesn't find the root filesystem.
    Am I on the correct way to create the ramdisk? or, missing something on the image?
    Please help, thanks.

  2. ryanvade

    ryanvade Administrator Staff Member Staff Writer

    Aug 4, 2012
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