[Question] cp result.txt /dev/mtd0 problem

[Question] cp result.txt /dev/mtd0 problem

[이재훈]

 Hi Developers,

 I got latest MTD source code in CVS.
 and I successfully got kernel boot message from MTD .

 after booted, I tried MKDEDEV, 
 at that time, everyting is OK.

 when I followed the step in FAQ manual.
 I tried 

 cp /tmp/jffs.image  /dev/mtd0

 I got 

 cp: /dev/mtd0  Read only file system.

 I don't know how to overcome this problem..

 Could anyone suggest any tips or helps?
 Any comments will help us.

 thanks.

 kingseft@samsung.co.kr


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Re: [Question] cp result.txt /dev/mtd0 problem

[Andrew Dixon]

>  when I followed the step in FAQ manual.
>  I tried
> 
>  cp /tmp/jffs.image  /dev/mtd0
> 
>  I got
> 
>  cp: /dev/mtd0  Read only file system.
> 

Have you mounted /dev/mtd0 onto a file system?  You probably need to do
something like:

	#mount -t mtd /dev/mtd0 /flash
               ^^^^^^

I'm not sure about "-t mtd" because I haven't started playing with this
yet myself, but that info should be fairly easy to track down.

Once the file system is mounted you should be able to copy to it by:

	$cp /tmp/jffs.image /flash

later,
Andy

Re: [Question] cp result.txt /dev/mtd0 problem

[Vipin Malik]

At 08:44 AM 7/16/2001 -0400, Andrew Dixon wrote:

> >  when I followed the step in FAQ manual.
> >  I tried
> >
> >  cp /tmp/jffs.image  /dev/mtd0
> >
> >  I got
> >
> >  cp: /dev/mtd0  Read only file system.
> >
>
>Have you mounted /dev/mtd0 onto a file system?  You probably need to do
>something like:
>
>         #mount -t mtd /dev/mtd0 /flash
>                ^^^^^^

/dev/mtd is not a filesystem- it is a char device. You cannot mount it. 
(though you can mount a *filesystem* on top of it (via its cousin- mtdblockn)).

try the following:
# strace cp /tmp/jffs.image  /dev/mtd0

See where it fails. It may give you a clue.

Vipin