Help answer threads with 0 replies.
Go Back > Forums > Linux Forums > Linux - General
User Name
Linux - General This Linux forum is for general Linux questions and discussion.
If it is Linux Related and doesn't seem to fit in any other forum then this is the place.


  Search this Thread
Old 12-03-2008, 04:05 PM   #1
LQ Newbie
Registered: Dec 2008
Posts: 2

Rep: Reputation: 0
"Bad address" reading /dev/mem

I have 2G RAM, but I get this:

localhost:~# dd if=/dev/mem bs=1024 >/dev/null
dd: reading `/dev/mem': Bad address
917504+0 records in
917504+0 records out
939524096 bytes (940 MB) copied, 1.16839 seconds, 804 MB/s

Why can't I read above 917504 kbytes?
Old 12-03-2008, 06:06 PM   #2
LQ Veteran
Registered: Nov 2005
Location: Annapolis, MD
Distribution: Mint
Posts: 17,808

Rep: Reputation: 743Reputation: 743Reputation: 743Reputation: 743Reputation: 743Reputation: 743Reputation: 743
What is /dev/mem and how does it compare to /proc/kcore?

(I don't know the answer, but the secret lies in understanding Linux memory management which, according to my reading, is not a trivial undertaking)

If it makes you feel any better, my system gives the same result, but takes 1/10th of a second longer.


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 On
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
openvpn ipaddress problem: "MULTI: bad source address from client" arobinson74 Linux - Networking 6 10-02-2008 06:26 PM
Who's sending this mail to "Bad destination mailbox address" ssfrstlstnm Linux - Server 10 06-20-2008 10:14 PM
Bad mount of .mdf - "wrong fs type, bad option, bad superblock, on /dev/loop0" Maybe-not Linux - General 2 02-29-2008 01:30 PM
Fedora install problem "error 2 reading header: cpio: Bad Magic" galois007 Linux - Software 0 03-09-2006 10:41 PM
"/usr/tux/backup/login: Bad Address" dri95 Linux - Security 0 02-26-2002 07:30 AM > Forums > Linux Forums > Linux - General

All times are GMT -5. The time now is 09:48 AM.

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