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Finished the Gentoo Handbook Basic Install (Solved)
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linuxUser1
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Joined: 16 Aug 2013
Posts: 4
Location: Somewhere in Nevada

PostPosted: Fri Aug 16, 2013 8:47 pm    Post subject: Finished the Gentoo Handbook Basic Install (Solved) Reply with quote

To tell you the truth, I'm a newb at pretty much anything Linux/Unix(except MS Win X) and this is my first real attempt at having fun with a Linux Distro. Even though I have dabbled with Ubuntu/DSL/BT-4 I never really tried to understand any of the filesystems (outside of NTFS) much less the shell for Linux OS's. So here's my problem:

As I said in my title I have an Error after rebooting from the x86 minimal installation CD my kernel loads up untill VFS, where it says:

Cannot open root device sda3 or unknown-block(0,0): error -6
Please append a correct "root=" boot option; here are the available partitions:
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
Pid: 1, comm: swapper/0 Not tainted 3.8.13-gentoo #1
Call Trace:
[<c043c49f>] panic+0x81/0x177
[<c05e9d15>] mount_block_root+0x1e0/0x1f0
[<c01d33c0>] ? sys_mknod+0x15/0x17
[<c05e9ec4>] mount_root+0xcf/0xd7
[<c05ea011>] prepare_namespace+0x145/0x188
[<c05e9a79>] kernel_init_freeable+0x180/0x188
[<c043103a>] kernel_init+0x8/0xaf
[<c04462b7>] ret_from_kernel_thread+0x1b/0x28
[<c0431032>] ? rest_init+0x5a/0x5a

The scroll lock and caps lock lights on my Laptop are blinking in sync as well when I leave the PC at this stop. My Laptop that I am using to install Gentoo 3.8.13 x86 (i686) on is the Dell Latitude D600 I'm not sure if my CPU has an 1M or 2M cache but it has a clock speed of 1.6Ghz and my memory is 1GB of RAM with 60GB of HDD.

Also it would be worth noting that every time I try to unmount after cd at the end of the Gentoo Handbook before rebooting, the CLI gives me an error of -bash: unmount: command not found and I also noticed that when rebooting I get a "/mnt/gentoo/cdr cannot mount cdr after it has already mounted" my cd drive, so to speak I guess there is two cdr entries. I am using genkernel after I tried creating my own kernel package only to have the same error. I am sorry if I made a possible duplicate post, I didn't have a lot of time to type this out after completing some recon on this issue before I had to leave for work.

http://bpaste.net/show/123650/
http://bpaste.net/show/123651/
http://bpaste.net/show/123652/
http://bpaste.net/show/123653/
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Last edited by linuxUser1 on Fri Aug 16, 2013 10:22 pm; edited 1 time in total
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NeddySeagoon
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Joined: 05 Jul 2003
Posts: 31351
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PostPosted: Fri Aug 16, 2013 9:24 pm    Post subject: Reply with quote

linuxUser1,

Welcome to Gentoo.

The easy ones first. Your boot ends with whats called a kernel panic. This is indicated by the flashing keyboard leds and the words "Kernel panic -" in your post.
The unmount command is spelt umount - there is no 'n'. However, the kernel will cleanly unmount any filesystems you leave mounted, so there is no damage done.

The
Code:
unknown-block(0,0)
tells a great deal about the root cause of your problem. The number 90,0) mean that the kernel cannot communicate with your hard drive.

You don't say how you made your kernel but I guess you used the command
Code:
genkernel all
genkernel builds you a fully modular kernel and an initrd.
You must use the initrd as the modules the kernel needs to mount root are held then.

You grub.conf shows
Code:
kernel /boot/kernel-genkernel-x86-3.8.13-gentoo root=/dev/sda3
#initrd /boot/initramfs-genkernel-x86-2.6.24-gentoo-r5


and your ls -l /boot shows
Code:
-rw-r--r-- 1 root root 3601844 Aug 15  2013 initramfs-genkernel-x86-3.8.13-gentoo
-rw-r--r-- 1 root root 3167552 Aug 15  2013 kernel-genkernel-x86-3.8.13-gentoo


In grub.conf, your initrd line is commented out. If you uncomment it you will be part way there. It also needs to refer to the initramfs file you actually have in /boot
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NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.
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linuxUser1
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Joined: 16 Aug 2013
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Location: Somewhere in Nevada

PostPosted: Fri Aug 16, 2013 9:53 pm    Post subject: Thank you... Reply with quote

The solution you provided worked flawlessly, thank you :D
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