Red Hat Bugzilla – Bug 78563
images/boot.img cant boot, cramfs magic error
Last modified: 2007-04-18 12:48:42 EDT
Description of Problem:
I downloaded first the red hat version 7.3 iso image 1 and used loop device
mounting to retrieve and dd the boot.img from the images directory on the iso
and them from the os directory on the web site and when I booted in any option
with the boot disk the kernel told me that the root device could not be
mounted. earlier there was an error about an incorrect cramfs magic number.
Version-Release number of selected component (if applicable):
I managed it every time I booted the floppy image.
Steps to Reproduce:
1. make the floppy disk from boot.img as in (images/boot.img)
2. reboot to boot rom the disk
hang, caps and scroll lights flashing, complaining that the kernel cant mount
the root device
start installation proceedure
Have you tried using a different floppy disk? This sounds like a bad disk to me.
Which ever media I test it comes to the same point. I don't find this problem
in Pscyhe 8.0. You should consider all possibilities and not attempt to ignore
it as a incompitance. If it was a media error then your own test would indecate
to the contary. it's not sufficent to request I check the disk as I always
check the disk agsinst the original image. If the image I take from the disk is
identical to the original image then the there is not media fault.
We do not currently have a test to see if the boot floppy/image is not corrupt.
That is why we are suggesting that the floppy media you used may have errors
causing problems later. I know I average about a bad floppy a week in the work
I have done the test i indecated before and there is no difference to the image
taken from the floppy as it on the original image so the image on disk it not
BTW: if you dd the image to the floppy then boot from the floppy find the fault
and dd from the floppy back to a new image file then you can verify the two
images are binarily identical. If there are the same you cannot determine the
media is corrupt.
dd if=image of=/dev/fd0
dd if=/dev/fd0 of=image.new
diff --binary image image.new
Please try the 8.0 version of the product - it has numerous fixes. I have not
seen a failure mode as you are experiencing before that was not due to bad
media. Perhaps trying 8.0 will address the issue (the kernel is newer, among
How do I indecate it works in rh 8.0?
If 8.0 worked we can close this issue as 'CURRENTRELEASE'.
Closing due to inactivity - please reopen if you have additional information to
add to this report.
just to confirm the next release which is shown earlier