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Old 07-11-2004, 11:29 AM   #1
Reefcrazed
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Bad error after custom kernel - Google did not help


I have Fedora Core 2 loaded, everything working on my laptop even my wireless. I followed the guide on customizing my kernel and used the GUI to pick my kernel options. If i did not know what it did i left it alone and after everything seemed to go like clockwork i booted into the new kernel with a kernel panic . So i boot back up into the old kernel and tried a few things i found on google referring to having multiple partitions, which i do. I clicked on ext3 under partitions and ext2fs support just like the documentation stated for these kernel panic VFS errors something about having dual boot setups. Well after doing the kernel again i got the same error. After reading on this and other forums alot of people state that they get these after customizing the kernel and there never seems to be a fix on past threads. I am just about away from XP soon as i do this to speed my Fedora up some. I want to get away from MS and all this spyware/adware/virus ridden world and get into Linux and it's funky coolness so give me a hand.

The exact error is Kernel Panic : VFS : Unable to mount root fs on unknown - block (0,0)
 
Old 07-11-2004, 11:44 AM   #2
trey85stang
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make sure you ext3 etc.. whatever your are using in statically not as modules.
 
Old 07-11-2004, 11:45 AM   #3
Reefcrazed
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I am 95 percent positive i did but will boot back into my old kernel in a few hours just to be 100 percent on this. I would like to get this resolved and the cure in this post for future users that get this same problem.
 
Old 07-11-2004, 12:51 PM   #4
Andrew Benton
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Did you start from the Fedora kernel config that worked? The kernel is a complicated thing so the thing is to change it slowly, one thing at a time. That way, if you make a change and it breaks you know what it was that you did. So the trick is, just after you've done make mrproper, copy the config file /boot/config-version into the kernel source and rename it .config. Then do make menuconfig and only change a few things. If they work, back up that .config as a known good one and do it again. make mrproper deletes /usr/src/linux/.config so you have to copy it in every time. I found that building from the fedora config always failed unless I said no to the nfs menu and security menu.
 
Old 07-11-2004, 02:13 PM   #5
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Yeah the kernel worked fine before. How do you set it back to the default settings of the existing kernel in xconfig ?
 
Old 07-11-2004, 03:00 PM   #6
Andrew Benton
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As I said, after you've done make mrproper, copy the config file /boot/config-version into the kernel source and rename it .config
 
  


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