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12-26-2004, 07:35 AM
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#1
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LQ Newbie
Registered: Dec 2004
Location: memphis,tn
Distribution: WBEL3
Posts: 17
Rep:
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VFS: Cannot open root device
like im sure this is a pretty common mistake....for all the new people out there messing aroudn with linux
in anycase im getting
VFS: Cannot open root device "LABEL=/" or 00:00
Please append a correct "root=" boot option
Kernel panic: VFS:Unable to mount root fs on 00:00
reason for getting this error.....sigh i figured i could go and modify the grub.conf myself considering it was showing 4 other kernels to choose from
i just wanted to have my current kernel only so i took out what i thought was harmless info from the grub.conf pretaingitn to the OTHER kernels...now i cant boot up at all
How can i solve the user-end problem  ??
Last edited by muerte42200; 12-26-2004 at 08:12 AM.
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12-26-2004, 08:14 AM
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#2
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LQ Newbie
Registered: Dec 2004
Location: memphis,tn
Distribution: WBEL3
Posts: 17
Original Poster
Rep:
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i fixed thie problem..
went into windows and opened up Partition Magic and was able to view my linux drive i went to the /boot/grub dir and thank god it made a back up so i deleted the file and renamed the back up and vola!
i was getting skerred i was gonna have to use windows for awhile 
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12-26-2004, 08:23 AM
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#3
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Member
Registered: Feb 2004
Location: Valby, Denmark / Citizen of the Web
Distribution: Slackware 14.1
Posts: 879
Rep:
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I have come across problems like that from time to time. I always use Knoppix to fix such things - and fix other people's Windows, just for show...
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01-20-2005, 10:59 AM
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#4
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LQ Newbie
Registered: Jan 2005
Posts: 2
Rep:
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I was trying to upgrade my kernel from 2.4.22 to 2.4.27 I'm having the same error message when I tried to bootup the new kernel. (2.4.27) Does anyone know where should I start in fixing my problem?
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01-20-2005, 11:41 AM
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#5
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Member
Registered: Dec 2001
Location: Kent in UK
Distribution: Fedora 2
Posts: 170
Rep:
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Check your new kernel supports your root file system. I usualy compile it in rather than use a module. I use FC2 but with reiserfs. Look at /etc/fstab mine is :-
/dev/hda2 / reiserfs defaults 1 1
none /dev/pts devpts gid=5,mode=620 0 0
none /dev/shm tmpfs defaults 0 0
none /proc proc defaults 0 0
none /sys sysfs defaults 0 0
/dev/hda3 swap swap defaults 0 0
/dev/cdrom /mnt/cdrom udf,iso9660 noauto,user,kudzu,ro 0 0
/dev/cdrom1 /mnt/cdrom1 udf,iso9660 noauto,owner,kudzu,ro 0 0
/dev/fd0 /mnt/floppy auto noauto,owner,kudzu 0 0
I installed FC2. Cut out all the bits I did not want. Dumped whole lot as a tar archive. Reformatted hda2 as reiserfs.
Reloaded the tar archive.
If I do not edit fstab I get the same error as you.
Hope all this gives you some clue as to where to look.
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01-20-2005, 12:03 PM
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#6
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LQ Newbie
Registered: Jan 2005
Posts: 2
Rep:
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Well, I'm still not sure what to do. I'm using FC1. Here is my /etc/fstab old kernel setting (2.4.22).
LABEL=/ / ext3 defaults 1 1
LABEL=/boot /boot ext3 defaults 1 2
none /dev/pts devpts gid=5,mode=620 0 0
LABEL=/home /home ext3 defaults 1 2
LABEL=/opt1 /opt ext3 defaults 1 2
none /proc proc defaults 0 0
none /dev/shm tmpfs defaults 0 0
/dev/hda3 swap swap defaults 0 0
/dev/cdrom /mnt/cdrom udf,iso9660 noauto,owner,kudzu,ro 0 0
/dev/fd0 /mnt/floppy auto noauto,owner,kudzu 0 0
/dev/cdrom1 /mnt/cdrom1 udf,iso9660 noauto,owner,kudzu,ro 0 0
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01-21-2005, 03:43 AM
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#7
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Member
Registered: Dec 2001
Location: Kent in UK
Distribution: Fedora 2
Posts: 170
Rep:
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for your boot volume try in fstab
/dev/hdan / ext3 defaults 1 1
where hdan is where your root is, in my case hda2
Your kernel must be able to read ext3 filesystem
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