LinuxQuestions.org
Support LQ: Use code LQ3 and save $3 on Domain Registration
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Software
User Name
Password
Linux - Software This forum is for Software issues.
Having a problem installing a new program? Want to know which application is best for the job? Post your question in this forum.

Notices


Reply
 
Search this Thread
Old 11-05-2010, 04:38 PM   #1
dbrazeau
Member
 
Registered: Aug 2009
Distribution: Fedora, OpenSuse, DENX Embedded Linux
Posts: 162

Rep: Reputation: 28
What are the NAND(MTD) read and write commands?


I have tried using dd but it appears that dd is not skipping the bad blocks in the bad block table. Is there some other command that I should be using to read and write to a raw NAND (MTD) device?
 
Old 11-05-2010, 05:28 PM   #2
TobiSGD
Moderator
 
Registered: Dec 2009
Location: Hanover, Germany
Distribution: Whatever fits the task best
Posts: 16,210
Blog Entries: 2

Rep: Reputation: 4425Reputation: 4425Reputation: 4425Reputation: 4425Reputation: 4425Reputation: 4425Reputation: 4425Reputation: 4425Reputation: 4425Reputation: 4425Reputation: 4425
If you want to skip bad blocks use the ddrescue command. It may be that you have to install it first. Have a look at
Code:
man ddrescue
for informations about the usage, the options differ from dd.
 
Old 11-05-2010, 06:29 PM   #3
dbrazeau
Member
 
Registered: Aug 2009
Distribution: Fedora, OpenSuse, DENX Embedded Linux
Posts: 162

Original Poster
Rep: Reputation: 28
Thanks for the reply. I ended up installing mtd-utils and used nandwrite to write to NAND and that seems to work.
 
Old 11-05-2010, 06:31 PM   #4
eSelix
Senior Member
 
Registered: Oct 2009
Location: Wroclaw, Poland
Distribution: Arch, Kubuntu
Posts: 1,247

Rep: Reputation: 309Reputation: 309Reputation: 309Reputation: 309
MTD is not a real block device. If you have bad blocks on MTD it cannot be seeked as normal tools will do it. Reading software must handle this itself. Maybe try mtd-utils if you have this package. It automaticaly do it.
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
[SOLVED] mtd read errors dbrazeau Linux - Software 2 11-05-2010 06:28 PM
Read Write access to a iso9660 filesystem..mount a .iso image as read write ceazar123 Linux - Newbie 16 09-01-2010 09:07 AM
Read Write access to a iso9660 filesystem..mount a .iso image as read write ceazar123 Linux - General 2 08-26-2010 03:32 PM
Does "mtd write" clear/erase the end of the mtd block by default? (no man page found) maddes.b Linux - Kernel 0 08-17-2009 03:07 AM


All times are GMT -5. The time now is 04:59 PM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration