Problem to save file on the hard disk! What I have to set to do it ?

Matteo matteo.posterli at studenti.unipr.it
Mon Mar 13 21:48:43 UTC 2006 

Thomas,

Yes I can access to windows from linux. 
I created hda1 using gparted formatting hda1 as FAT16. 
Infact if I use gparted, like you can see, it says that is FAT16, but if I use
only "cfdisk" says that is only linux.
I try to see my memory using also qtparted and It says me that hda1 is FAT16
partition. 
I don't know why "cfdisk -l /dev/hda" don't shows that hda1 is FAT16.
But both gparted both qtparted program shows that hda1 is a FAT16 !

Have you some idea about my problem ?

Really Thanks in advance

Matteo


Scrive "Thomas Doerfler (nt)" <Thomas.Doerfler at imd-systems.de>:

> -----BEGIN PGP SIGNED MESSAGE-----
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> 
> Matteo,
> 
> I am a bit confused, your listing shows, that /dev/hda1 is a Linux ext3
> partition, but you write that gparted shows it as FAT16. But /dev/hda2
> looks fine in the partition table. can you access the filesystem on
> /dev/hda2 from linux?
> 
> Thomas.
> 
> Matteo schrieb:
> > Ok this is the result of the command "fdisk -l /dev/hda"
> > 
> > Disk /dev/hda: 40.0 GB, 40007761920 bytes
> > 255 heads, 63 sectors/track, 4864 cylinders
> > Units = cilindri of 16065 * 512 = 8225280 bytes
> > 
> > Dispositivo Boot      Start         End      Blocks   Id  System
> > /dev/hda1            2678        3014     2706952+  83  Linux
> > /dev/hda2               1        2677    21502971    c  W95 FAT32 (LBA)
> > /dev/hda3            3015        4784    14217525   83  Linux
> > /dev/hda4            4785        4864      642600    5  Esteso
> > /dev/hda5            4785        4864      642568+  82  Linux swap /
> Solaris
> > 
> > 
> > looking with gparted I have the result that, hda1 is "FAT16", hda2 is
> "FAT32",
> > hda3 is "ext3", hda4 is "exetended", hda5 is "linux swap".
> > 
> > I created hda1 with FAT16 thinking to resolve the problem, but from the
> fileio
> > example I have always the same error, 
> > " fsmount: mounting of "/dev/hda1" to "/mnt/hda1" failed: No such file or 
> > directory " but now hda1 is FAT16 so it could be right for RTEMS, but it
> isn't.
> > Why ?
> > 
> > Can you help me ?
> > 
> > Thanks advanced
> > 
> > MAtteo
> > 
> > 
> > 
> > Scrive "Thomas Doerfler (nt)" <Thomas.Doerfler at imd-systems.de>:
> > 
> > 
> > Matteo,
> > 
> > Matteo schrieb:
> > 
> >>Ok hda3 is "ext3", but I have a window "FAT" on hda1 and hda2, so I could
> > 
> > save
> > 
> >>my file in this partitions? 
> > 
> > yes, this should be possible.
> > 
> > 
> >>But I see from the error message that RTEMS can't mount all my partition
> > 
> > hda1,2
> > 
> >>(FAT) for windows and hda3,4 (ext3) for linux.
> > 
> > can you boot linux on your system, log in as root and send me the output
> > of the command   "fdisk -l /dev/hda" ? Maybe the type of your FAT
> > partitions is ounknown to RTES or your FAT partitions are located in an
> > extended partition (most unlikely).
> > 
> > 
> >>Can you help to save a file in one of this partitions ?
> >>Is there any way to save on a "ext3" partitions ?(Because I have to test
> > 
> > RTEMS
> > 
> >>on some linux systems and I'm afraid they are all "ext3"!)
> > 
> > Currently there is no RTEMS support for ext3 filesystems, so sorry, this
> > will not work.
> > 
> > wkr,
> > Thomas.
> > 
> > 
> > 
> > 
> >>Scrive "Thomas Doerfler (nt)" <Thomas.Doerfler at imd-systems.de>:
> > 
> > 
> >>Matteo,
> > 
> >>well, it SHOUDL work, if you have a FAT partition in the primary
> >>partition table of your harddisk.
> >>You are mentioning havong Linux on hda3, most problable it will use
> >>"ext3" as the filesystem, and RTEMS does not know this FS type.
> > 
> >>When you are running Linux on your system, what kind of output do you
> >>get from the command
> > 
> >>fdisk -l /dev/hda
> > 
> >>(you have to run this as root).
> > 
> >>wkr,
> >>Thomas.
> > 
> > 
> >>Matteo schrieb:
> > 
> > 
> >>>Ok, like you have suggested I understood the steps to mount the hardisk,
> > 
> >>but 
> > 
> > 
> >>>the problem is that the fileio example doesn't mount my hardisk!
> >>>I follow the steps suggest from the fileio.doc but after it asks to me to
> > 
> >>enter 
> > 
> > 
> >>>the partition table of first harddisk ( /dev/hda ) I try to mount the 
> >>>partitions and I have an error, He says to me 
> >>>" fsmount: mounting of "/dev/hda1" to "/mnt/hda1" failed: No such file or
> 
> >>>directory "  and so on for hda2,3,4 and for hdc1,2,3,4 
> > 
> >>>Linux partition is on hda3, but the fileio example doesn't mount it !
> >>>What's the problem ?
> > 
> >>>Have you some idea ?
> > 
> >>>Really Thanks in advance
> > 
> >>>Matteo
> > 
> > 
> > 
> >>>Scrive "Thomas Doerfler (nt)" <Thomas.Doerfler at imd-systems.de>:
> > 
> > 
> >>>Matteo,
> > 
> >>>I assume you are working on a standard i386 pc hardware. Have a look at
> >>>the "fileio" sample application available in the RTEMS source tree under
> >>>"cpukit/testsuites/samples/fileio". You should try to get it working on
> >>>your system (it should work from scratch if you got a standard PC
> system).
> > 
> >>>Have a look at "fileio.doc", it explains a bit what should work with
> >>>this sample program.
> > 
> >>>In your application, you will have to do the following steps to get
> >>>access to your harddisk:
> > 
> >>>- add the IDE and ATA drivers to your standard driver table (see entries
> >>>in fileio/system.h)
> >>>- add a rtems_bdbuf_configuration data structure to your system (once
> >>>again, see fileio/system.h)
> > 
> >>>- add a fs_table to your application, which specifies which harddisk
> >>>partitions are to be mounted to which mount points (see fileio/
> > 
> >>>- call the "rtems_ide_part_table_initialize" function after system
> >>>startup to read in your harddisk partition table. This call will create
> >>>a new device node (/dev/hda1 ...) for each partition available.
> > 
> >>>- call the "rtems_fsmount" function to mount the partitions to their
> >>>respective mount points. Have a look into "libmisc/fsmount" to find out,
> >>>how it works.
> > 
> >>>Then you can access the harddisk partitions at their respective mount
> >>>points.
> > 
> >>>wkr,
> >>>Thomas.
> > 
> > 
> >>>Matteo schrieb:
> > 
> > 
> >>>>Hi 
> >>>>Joe says to me ask you how I can save a file on hard disk? if I have to
> > 
> >>set
> > 
> > 
> >>>>something in my linux's grub?
> > 
> >>>>below the previous email sent to Joel.
> > 
> >>>>Thanks in advance 
> > 
> >>>>Matteo
> > 
> >>>>Scrive Joel Sherrill <joel.sherrill at oarcorp.com>:
> > 
> > 
> > 
> >>>>>Matteo wrote:
> > 
> > 
> > 
> >>>>>>Hi
> >>>>>>
> >>>>>>I'm trying to use the fdopen example of the package example-4.6.99.2
> > 
> > but
> > 
> >>>it
> > 
> > 
> >>>>>>doesn't works, It doesn't create the file!
> >>>>>>
> >>>>>>
> > 
> >>>>>I could be wrong but I think this one actually was submitted as part of
> 
> >>>>>a bug report and
> >>>>>the bug may still be outstanding.  It may be fixed.  I just don't 
> >>>>>remember.  See below for
> >>>>>the more likely case.
> > 
> > 
> > 
> >>>>>>But I can launch the hello world example and I create some simple
> posix
> > 
> >>>>>program 
> > 
> > 
> >>>>>>with rtems yet so I think to have configured it well.
> >>>>>>So what can be the problem ?
> >>>>>>May be when I launch the fdopen example I have to set some particular
> > 
> >>>>>privilege 
> > 
> > 
> >>>>>>in the "grub"(my linux boot loader) to allow it to write on the hard
> > 
> >>>disk?
> > 
> > 
> >>>>>this 
> > 
> > 
> >>>>>>is only my newbye's opinion..
> >>>>>>
> >>>>>>
> >>>>>>
> > 
> >>>>>Ohh.... if you are doing anything with the hard disk, then there is
> some
> > 
> >>>>>filesystem specific
> >>>>>configuration to get things right.  The example code is only going to 
> >>>>>work with the IMFS
> >>>>>which is a RAM based filesystem.
> > 
> >>>>>Ask on the list so someone list Thomas can point you to an example
> > 
> > setup.
> > 
> > 
> > 
> >>>>>>Thanks in advantage
> >>>>>>
> >>>>>>Matteo
> >>>>>>
> >>>>>>
> >>>>>>
> > 
> > 
> > 
> > 
> > 
> > 
> >>>--
> >>>--------------------------------------------
> >>>IMD Ingenieurbuero fuer Microcomputertechnik
> >>>Thomas Doerfler           Herbststrasse 8
> >>>D-82178 Puchheim          Germany
> >>>email:    Thomas.Doerfler at imd-systems.de
> >>>PGP public key available at:
> >>>    http://www.imd-systems.de/pgpkey_en.html
> > 
> >>--
> >>--------------------------------------------
> >>IMD Ingenieurbuero fuer Microcomputertechnik
> >>Thomas Doerfler           Herbststrasse 8
> >>D-82178 Puchheim          Germany
> >>email:    Thomas.Doerfler at imd-systems.de
> >>PGP public key available at:
> >>     http://www.imd-systems.de/pgpkey_en.html
> > 
> > --
> > --------------------------------------------
> > IMD Ingenieurbuero fuer Microcomputertechnik
> > Thomas Doerfler           Herbststrasse 8
> > D-82178 Puchheim          Germany
> > email:    Thomas.Doerfler at imd-systems.de
> > PGP public key available at:
> >      http://www.imd-systems.de/pgpkey_en.html
> 
> - --
> - --------------------------------------------
> IMD Ingenieurbuero fuer Microcomputertechnik
> Thomas Doerfler           Herbststrasse 8
> D-82178 Puchheim          Germany
> email:    Thomas.Doerfler at imd-systems.de
> PGP public key available at:
>      http://www.imd-systems.de/pgpkey_en.html
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