Re: [gentoo-user] VFS: Cannot open root device "hda6" or unknown-block(3,6)

["fei huang" <daniel.huangfei@gmail.com>]

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didn't you separate your boot partition from / ?

 -->   root (hd1,5)
this indicates your BOOT partition (/boot) is located at  /dev/hdb6

-->   kernel /boot/linux-2.6.15-gentoo-r1 root=/dev/hda6
this indicates your ROOT partition ( your / ) locates at /dev/hda6, is is
possible?


On 12/26/06, Bruce Burden <brucegb@realtime.net> wrote:
>
>
>
>    Hi gang,
>
>         I have a laptop, originally with Windows. I partitioned the
>    windows space, and installed Gentoo. Fine and well.
>
>         Then I replaced the original hard drive with a new one, and
>    moved the windoze/Gentoo drive to a USB enclosure. I changed the
>    drive specs from "hda0,x" to "hda1,x", and attempted to boot
>    Gentoo in single user mode, by appending a 1 to the GRUB string.
>
>         That seemed to work, but eventually the process fails with
>    the:
>
> VFS: Cannot open root device "hda6" or unknown-block(3,6)
>
>    message above. Googling about tells me that perhaps the SCSI or
>    the USB subsystems may not be loaded, and that is why the boot
>    process fails. One recommendation was the change the /dev/hdaX
>    notation for the device numerical notation, ie root=0x802.
>
>         Now, I have not (quickly) found the numerical notation,
>    although I did encounter it once upon a time previously. Does
>    this seem like the correct approach? If so, what would be the
>    correct notation for the second drive? As I recall, 0x800 was
>    a SCSI notation?
>
>         My GRUB is:
>
> default 0
> timeout 8
> splashimage=(hd1,5)/boot/grub/splash.xpm.gz
>
>
> title Gentoo Linux 2.6.15
>     root (hd1,5)
>     kernel /boot/linux-2.6.15-gentoo-r1 root=/dev/hda6
>
> title Windows
>     root (hd1,0)
>     makeactive
>     chainloader +1
>
> title Failsafe -- Gentoo Linux 2.6.12
>     kernel (hd1,5)/boot/vmlinuz root=/dev/hda6 showopts ide=nodma apm=off
> acpi=off vga=nor
> mal noresume selinux=0 barrier=off nosmp noapic maxcpus=0  3
>     initrd (hd1,5)/boot/initrd
>
>
>    and all I have really done is change hd1,X, where originally I
>    had hda0,X...
>
>         I would also like to be able to boot into windoze, and currently
>    all it does is return to the GRUB menu, so clearly something isn't
>    right...
>
>                                                 Thank you,
>                                                         Bruce
> --
> ------------------------------------------------------------------------
>   "I like bad!"                         Bruce Burden    Austin, TX.
>         - Thuganlitha
>         The Power and the Prophet
>         Robert Don Hughes
>
> --
> gentoo-user@gentoo.org mailing list
>
>

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