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Have you prepared the linux_i386.img image file?<br />
<br />
qemu-img create ...
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I am using it from sit called free electrons to leran kernel programming.<br />
how to check linux_i386.img ?<br />
how to use qemu-img create ...?<br />
REMEMBER:I am using kernel parameter and giving linux kernel image which I build for pentium pro processor.<br />

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I don't know qemu, but I do know disks, and /dev/hda is a _disk_, not a partition. &nbsp;Booting from a normal disk, you would need to use /dev/hda1 (or hda2 for the second partition, etc)
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thanks everyone I got solution I have to enable ramfs support in kernel.
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I am running following command:<br />
sudo qemu &nbsp;-m 32 -kernel data/linux-2.6.23/arch/i38<wbr />6/boot/bzI<wbr />mage -append &quot;root=/dev/hda&quot; -hda linux_i386.img &nbsp;-boot c<br />
it gives me following error in qemu window:<br />
VFS can not open root device &quot;hda &quot;<br />
<br />
please append correct root= boot option &nbsp;<br />
<br />
kernel panic:not syncing :VFS :Unable to mount root fs on unknown-block(0,0)
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I am running following command:
sudo qemu  -m 32 -kernel data/linux-2.6.23/arch/i386/boot/bzImage -append "root=/dev/hda" -hda linux_i386.img  -boot c
it gives me following error in qemu window:
VFS can not open root device "hda "

please append correct root= boot option  

kernel panic:not syncing :VFS :Unable to mount root fs on unknown-block(0,0)

Have you prepared the linux_i386.img image file?

qemu-img create ...

I am using it from sit called free electrons to leran kernel programming.
how to check linux_i386.img ?
how to use qemu-img create ...?
REMEMBER:I am using kernel parameter and giving linux kernel image which I build for pentium pro processor.


I don&#39;t know qemu, but I do know disks, and /dev/hda is a _disk_, not a partition.  Booting from a normal disk, you would need to use /dev/hda1 (or hda2 for the second partition, etc)

thanks everyone I got solution I have to enable ramfs support in kernel.

qemu on ubuntu 8.04 giving error VFS:Cannot open root device &quot;hda&quot; or unknown-block(0,0)

I am running following command:
sudo qemu  -m 32 -kernel data/linux-2.6.23/arch/i386/boot/bzImage -append &quot;root=/dev/hda&quot; -hda linux_i386.img  -boot c
it gives me following error in qemu window:
VFS can not open root device &quot;hda &quot;

please append correct root= boot option  

kernel panic:not syncing :VFS :Unable to mount root fs on unknown-block(0,0)

Kernel programming for Linux operating systems can be done with many different languages; C, C++, Python, Perl and Java, which are some of the most common languages used.There are also many different varieties of Linux, such as Ubuntu, Fedora and OpenSUSE.

Linux OS Dev

Linux is a UNIX-like open source operating system with hundreds of distinct distributions, including: Fedora, openSUSE, Ubuntu, Debian, Slackware, Gentoo, CentOS, and Arch Linux. Linux is generally associated with web and database servers, but has become popular in many niche industries and applications.

Linux

Kernel and system programming is the process of creating the software necessary for a computer or device to function and operate other programs. Some operating systems (such as Microsoft Windows) are proprietary, but others, such as the various Linux distributions, are open source.

qemu on ubuntu 8.04 giving error VFS:Cannot open root device &quot;hda&quot; or unknown-block(0,0)

qemu on ubuntu 8.04 giving error VFS:Cannot open root device "hda" or unknown-block(0,0)