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Old 01-31-2007, 06:58 PM   #1
AKAKAK
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problem with installing linux gentoo with a "root block device"


linux gentoo won't find "The root block device"
here is a quote:
Quote:
Determining root device...
The root block device is unspecified or not detected.
Please specify a device to boot, or “shell” for a shell...
the process don't show which device.
what can i do?

i have one hard drive of 250 gb:
* 80 gb ntfs. ( win xp 32 bit pro sp2 )
* 50 gb ntfs.
* the rest of the space 120 gb is unused and unmount.

120 gb is saved for the linux partitions.
 
Old 01-31-2007, 08:34 PM   #2
stress_junkie
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Quote:
The process don't show which device.
That should read
Quote:
The process doesn't show which device and partition are defined as the root partition.
Moving on.

Quote:
have one hard drive of 250 gb:
* 80 gb ntfs. ( win xp 32 bit pro sp2 )
* 50 gb ntfs.
* the rest of the space 120 gb is unused and unmount.
120 gb is saved for the linux partitions.
Have you installed Linux? According to your description you haven't yet put Linux on the hard disk. Are you trying to boot the Gentoo Live CD?

If you are trying to boot the Gentoo Linux Live CD from a USB attached CDROM drive then that could be the problem. Otherwise you need to provide more information about exactly what you are doing.

Last edited by stress_junkie; 01-31-2007 at 08:36 PM.
 
Old 02-01-2007, 02:17 AM   #3
Penguin of Wonder
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Assuming you have actually installed Gentoo and this is not a liveCD problem the only I know of to get this error (only because I got it myself) was a mis-configured grub.conf.

The line that says something like
Quote:
root (hd0,4)
or might of been this line
Quote:
kernel /vmlinuz-2.4.7-10 ro root=/dev/hda3
is probably wrong.

I'm sorry, its been a while. Just check your grub.conf

Last edited by Penguin of Wonder; 02-01-2007 at 02:19 AM.
 
Old 02-01-2007, 10:58 AM   #4
AKAKAK
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Quote:
Originally Posted by Penguin of Wonder
check your grub.conf
how can I check the file "grub.conf"?
which command?

i didn't installed the linux yet. he stop to installing at this point:
Quote:
Quote:
Determining root device...
The root block device is unspecified or not detected.
Please specify a device to boot, or “shell” for a shell...

Last edited by AKAKAK; 02-01-2007 at 11:01 AM.
 
Old 02-01-2007, 11:10 AM   #5
Penguin of Wonder
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If you haven't installed Linux then you don't have a grub.conf to check. If this is a LiveCD problem, I can't help you there.
 
Old 02-01-2007, 12:26 PM   #6
AKAKAK
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Penguin of Wonder this my pc:
e6700 core 2 duo
gigabyte ga-965p-ds4 lga 775
GeCube x1950 pro 512 mb dd3
wd250 gb sata2 16 mb buffer
g.skill two gb ddr2 800mhz cl4 dual channel

someone told me that the chipset 965p could be the problem this command: "pci=nommconf" can help take care this problem, but he didn't told me how to use this command or when.

i downloaded this gentoo live cd.

what can i do?
i need the linux to run apache,php5 server for my website.

Last edited by AKAKAK; 02-01-2007 at 12:45 PM.
 
Old 02-01-2007, 12:55 PM   #7
Penguin of Wonder
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Not to be a downer, but have you thought about trying another distribution? Ubuntu, Fedora, or SUSE. All are easier to install and will still run Apache and PHP.

If your determined to use Gentoo though, edit your grub.conf. Make sure you /boot parition is mounted first though.

Code:
mount /boot
nano -w /boot/grub/grub.conf
and then add the command they gave you to the end of the line that starts with "kernel"
 
Old 02-01-2007, 01:22 PM   #8
AKAKAK
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Quote:
Originally Posted by Penguin of Wonder
"kernel"
like that?
Quote:
kernel /pci=nommconf
or else?
 
Old 02-01-2007, 03:16 PM   #9
Penguin of Wonder
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Don't delete whats already there. Just append
Quote:
pci=nommconf
to end of the line.
 
Old 02-01-2007, 03:38 PM   #10
AKAKAK
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update

I try this command:
Quote:
gentoo /pci=nommconf
and it's work the kernel start running.
but it's still stuck at the some point as before:
Quote:
Determining root device...
The root block device is unspecified or not detected.
Please specify a device to boot, or “shell” for a shell...
so the chipset isn't the problem in this case and ok.
how can i found and resolut the problem?

Last edited by AKAKAK; 02-01-2007 at 04:13 PM.
 
Old 02-01-2007, 04:12 PM   #11
Penguin of Wonder
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Did you make sure your root and kernel path's were correct in your grub.conf as I mentioned before?
 
Old 02-01-2007, 05:32 PM   #12
AKAKAK
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yes i remembered to check the file:
grub.conf
with this commands:
Quote:
mount /boot
nano -w /boot/grub/grub.conf
the first command didn't work and the second command didn't work as well.

Is there a command that can show me which root device is block?
 
Old 02-02-2007, 08:18 PM   #13
AKAKAK
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this is command that gave me the answer.
Quote:
gentoo all-generic-ide irqpoll pci=nommconf
this part: all-generic-ide mean that i have problem with my cd-rom because his a ide interface and it's help pass and continue.
this part:pci=nommconf is for my motherboard chipset 965p.

this command solved my problem in this case.
 
Old 02-02-2007, 08:50 PM   #14
Penguin of Wonder
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Well I'm glad you got it worked out. Sorry I couldn't help you out! Enjoy Gentoo though!
 
Old 10-23-2007, 05:21 PM   #15
QuIcKSpArK
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Quote:
Originally Posted by AKAKAK View Post
this is command that gave me the answer.

this part: all-generic-ide mean that i have problem with my cd-rom because his a ide interface and it's help pass and continue.
this part:pci=nommconf is for my motherboard chipset 965p.

this command solved my problem in this case.
Hey,
I'm new to gentoo linux and I've only been using kubuntu and slax for a while now. I am very interested to install gentoo to expand my knowledge of linux. I get the same error.

Can I ask where you put that command when running from a live CD?
 
  


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