Re: Need help with RamDisk Rescue

Hi Mark,

On Mon, 2007-10-29 at 10:24 -0600, Mark Geib wrote:
> Lex,
>
> I have been able to get everything installed, and the installed linux
> tries to boot now. THanks.
>
> However, now I am getting an error when mounting /dev/mmcblk0p2...
>
> VFS: Cannot open root device "mmcblk0p2" or unknown-block(0,0)
> Please append a correct "root=" boot option
> Kernel panic - not syncing: VFS: Unable to mount root fs on
> unknown-block(0,0)
>

Looks like you've mixed up something there.
If you had installed to a compact flash card, the root device would have
been "hda2" (or similar), whereas you are trying to root to an SD/MMC
device.

> Should my startup.txt use something other than /dev/mmcblk0p2 for the CF
> card...?
>
> Mark.
>
> On Mon, 2007-10-29 at 04:50 +0000, Lex Landa wrote:
> > Hello Mark,
> >
> > On Fri, 26 Oct 2007 08:54:40 -0600, "Mark Geib" <mark.geib_at_echostar.com>
> > said:
> >
> > > I have been working to install linux on my 4700 via RamDisk Rescue
> > > method. I followed the wiki instructions very carefully, twice !, and
> > > everything appears to work correctly, however I have NO files in
> > > the /linux directory on my CF card. The /linux directory appears
> > > unchanged during the install. I have mounted the ext2 partition on the
> > > CF card and it appears to be a good linux install.
> > >
> > > Can I populate the files in the /linux directory required to run HaRET
> > > manually to boot the install.?
> >
> > I installed my Ramdisk Rescue to an SD card instead of a CF, but it
> > should work the same (please correct me if I'm wrong, anyone!).
> >
> > An 'fdisk -l' of my SD card looks like this:
> >
> > ---
> >
> > Disk /dev/sdb: 512 MB, 512229376 bytes
> > 16 heads, 62 sectors/track, 1008 cylinders
> > Units = cylinders of 992 * 512 = 507904 bytes
> > Disk identifier: 0x00096485
> >
> > Device Boot Start End Blocks Id System
> > /dev/sdb1 1 843 418016 b W95 FAT32
> > Partition 1 does not end on cylinder boundary.
> > /dev/sdb2 * 843 1008 81920+ 83 Linux
> > Partition 2 does not end on cylinder boundary.
> >
> > ---
> >
> > Partition 1 is formatted with the VFAT filesystem. It contains the
> > following directory structure:
> >
> > 17M ./linux/rescue/image
> > 22M ./linux/rescue
> > 50M ./linux
> > 18M ./My Documents
> > 5.2M ./hx4700_wince
> > 76K ./MSMETADATA
> > 46M ./Backup (Windows backups)
> > 176M ./media (music, photos)
> > 294M .
> > 294M total
> >
> > I remember that I had the same problem as you, and I needed to copy some
> > files manually. I can't remember exactly what I did as it was some time
> > ago, so I'll list the linux, linux/rescue and linux/rescue/image
> > directories. I think I copied stuff from linux/rescue and
> > linux/rescue/image to /linux and edited the startup file
> > (/linux/startup.txt) to point to the new zImage.
> >
> > /linux contains:
> >
> > total 28020
> > -rwx------ 1 lex root 1170 Jan 20 2007 README.txt
> > -rwx------ 1 lex root 5084 Jan 20 2007 custom.txt
> > -rwx------ 1 lex root 633856 Jan 20 1997 haret-0.3.8.exe
> > -rwx------ 1 lex root 5837680 Jan 27 1997 mplayer
> > -rwx------ 1 lex root 16084653 Jan 20 2007
> > opie-image-v0.8.4-ipaq-pxa270.rootfs.tar.bz2
> > -rwx------ 1 lex root 3708760 Jan 20 2007
> > ramdisk-rescue-0.6.4.rootfs.ext2.gz
> > drwx------ 3 lex root 8192 Jan 20 1997 rescue
> > -rwx------ 1 lex root 239 Jan 20 1997 startup.txt
> > -rwx------ 1 lex root 1195608 Jan 20 1997 zImage
> > -rwx------ 1 lex root 1196044 Jan 20 2007
> > zImage-2.6.16-hh5-ipaq-pxa270-20061028021958
> >
> > /linux/startup.txt:
> >
> > ---snip---
> >
> > #
> > # HaRET startup.txt for HX4700
> > #
> > # This file generated by RAMDISK RESCUE 0.6.4
> > # http://handhelds.org/moin/moin.cgi/RamdiskRescue
> > #
> >
> > set KERNEL zImage
> > set MTYPE 562
> > set CMDLINE "root=/dev/mmcblk0p2 console=tty0"
> > bootlinux
> >
> > ---unsnip---
> >
> > /linux/rescue contains:
> >
> > -rwx------ 1 lex root 5154 Jan 20 1997 RR-syslog.gz
> > -rwx------ 1 lex root 5084 Jan 20 2007 custom.txt
> > -rwx------ 1 lex root 633856 Jan 20 2007 haret-0.3.8.exe
> > drwx------ 2 lex root 8192 Jan 20 2007 image
> > -rwx------ 1 lex root 3708760 Jan 20 2007
> > ramdisk-rescue-0.6.4.rootfs.ext2.gz
> > -rwx------ 1 lex root 1910 Jan 20 2007 startup.txt
> > -rwx------ 1 lex root 1196044 Jan 20 2007
> > zImage-2.6.16-hh5-ipaq-pxa270-20061028021958
> >
> >
> > /linux/rescue/startup.txt, without comments:
> >
> > ---snip---
> >
> > set KERNEL "zImage-2.6.16-hh5-ipaq-pxa270-20061028021958"
> > set INITRD "ramdisk-rescue-0.6.4.rootfs.ext2.gz"
> > set MTYPE 562
> > set CMDLINE "root=/dev/ram0 ramdisk_size=12288 mem=64M
> > console=ttyS0,115200n8 console=tty0"
> >
> > # And the command that does all the heavy lifting
> >
> > bootlinux
> >
> > ---unsnip---
> >
> > (everything else is commented-out so I haven't included it)
> >
> > The important thing is startup.txt, which I edited to start Ramdisk
> > Rescue if I run HaRET from /linux/rescue, and Linux if I run HaRET from
> > /linux. It's a mess, I know.
> >
> > /linux/rescue/image/:
> >
> > -rwx------ 1 lex root 16084653 Jan 20 2007
> > opie-image-v0.8.4-ipaq-pxa270.rootfs.tar.bz2
> > -rwx------ 1 lex root 1195608 Jan 20 2007
> > zImage-2.6.15-hh2-ipaq-pxa270-20060923034420
> >
> > Note that I copied opie-image-v0.8.4-ipaq-pxa270.rootfs.tar.bz2 out of
> > the 'image' dir. I think I did this when I initially installed Linux,
> > to the second partition on the card. I could delete /linux/rescue/image
> > now as the install is complete.
> >
> > I hope this helps, though it'll probably be more confusing than anything
> > - I'm certainly a bit puzzled as to why I did it this way, when I look
> > at the structure of the SD card!
> >
> > Lex.
> > _______________________________________________
> > Hx4700-port mailing list
> > Hx4700-port_at_handhelds.org
> > https://www.handhelds.org/mailman/listinfo/hx4700-port

Regards,

Marcus.
Received on Thu Nov 01 2007 - 19:52:04 EST