Basically, I have an iso file that is compressed into 20 rar files. After extracting the first file, the error message will appear.

However, my iso file is split into multiparts and not one part. How do I solve this problem?

this doesnt solve my problem:
http://forum.archives.mepiscommunity...php?f=8&t=4732

What command should i enter for unrar?
I dont know what switches are for.

I'm not sure I understand you. Do you mean what command to you use to run unrar? How about unrar (at the terminal).
To find out what the switches are for try You'll see an explanation of all the switches.
ciao,
jdk

ok basically, these are the files I want to extract. Lets keep it simple: Ark does not work for extraction of multiple part files.

And then I am not sure how to use unrar. In windows, I just right click and unzip.

c@c-laptop:~/Mathworks.Matlab.R2011a.UNIX.ISO-TBE$ ls
ml2011au.iso ml2011au.r06 ml2011au.r13 ml2011au.r20 ml2011au.r27 ml2011au.r34 ml2011au.r41 ml2011au.r48
ml2011au.r00 ml2011au.r07 ml2011au.r14 ml2011au.r21 ml2011au.r28 ml2011au.r35 ml2011au.r42 ml2011au.r49
ml2011au.r01 ml2011au.r08 ml2011au.r15 ml2011au.r22 ml2011au.r29 ml2011au.r36 ml2011au.r43 ml2011au.r50
ml2011au.r02 ml2011au.r09 ml2011au.r16 ml2011au.r23 ml2011au.r30 ml2011au.r37 ml2011au.r44 ml2011au.r51
ml2011au.r03 ml2011au.r10 ml2011au.r17 ml2011au.r24 ml2011au.r31 ml2011au.r38 ml2011au.r45 ml2011au.rar
ml2011au.r04 ml2011au.r11 ml2011au.r18 ml2011au.r25 ml2011au.r32 ml2011au.r39 ml2011au.r46 ml2011au.sfv
ml2011au.r05 ml2011au.r12 ml2011au.r19 ml2011au.r26 ml2011au.r33 ml2011au.r40 ml2011au.r47 tbe.nfo


c@c-laptop:~/Mathworks.Matlab.R2011a.UNIX.ISO-TBE$ unrar -e ml2011lau.r00


This command does not work. I saw the man pages for rar but I dont know what switches are for. I am new to linux.

TIA.

Ok, I've seen rar files like yours but not for a while. I unrar ...r00 or ...ro1 and it creates the entire file for me. Try or
and maybe that will do the job.
ciao,
jdk

The syntax of your command is incorrect:

c@c-laptop:~/Mathworks.Matlab.R2011a.UNIX.ISO-TBE$ unrar ml2011au.r01

UNRAR 3.90 beta 2 freeware Copyright (c) 1993-2009 Alexander Roshal

Usage: unrar <command> -<switch 1> -<switch N> <archive> <files...>
<@listfiles...> <path_to_extract\>

<Commands>
e Extract files to current directory
l[t,b] List archive [technical, bare]
p Print file to stdout
t Test archive files
v[t,b] Verbosely list archive [technical,bare]
x Extract files with full path

<Switches>
- Stop switches scanning
ad Append archive name to destination path
ai Ignore file attributes
ap<path> Set path inside archive
c- Disable comments show
cfg- Disable read configuration
cl Convert names to lower case
cu Convert names to upper case
dh Open shared files
ep Exclude paths from names
ep3 Expand paths to full including the drive letter
f Freshen files
id[c,d,p,q] Disable messages
ierr Send all messages to stderr
inul Disable all messages
kb Keep broken extracted files
n<file> Include only specified file
n@ Read file names to include from stdin
n@<list> Include files listed in specified list file
o[+|-] Set the overwrite mode
or Rename files automatically
ow Save or restore file owner and group
p[password] Set password
p- Do not query password
r Recurse subdirectories
sl<size> Process files with size less than specified
sm<size> Process files with size more than specified
ta<date> Process files modified after <date> in YYYYMMDDHHMMSS format
tb<date> Process files modified before <date> in YYYYMMDDHHMMSS format
tn<time> Process files newer than <time>
to<time> Process files older than <time>
ts<m,c,a>[N] Save or restore file time (modification, creation, access)
u Update files
v List all volumes
ver[n] File version control
vp Pause before each volume
x<file> Exclude specified file
x@ Read file names to exclude from stdin
x@<list> Exclude files listed in specified list file
y Assume Yes on all queries

Your command didnt work.
That is y I asked what switches r for.

Sorry I forgot the "e" switch. Silly me. Did you actually read the contents of the man page?
Is that better?
Actually, I used Konqueror on these files and right-clicked on the file name (r00 or r01) and then clicked on "Extract here, Autodetect Folder.
Have fun.
jdk

Well it is better. I read the man pages and it said switches. That is when I got lost.

Anyway, at least I got an error message now:

Extracting from ml2011au.r08

... ml2011au.iso 18%
ml2011au.iso - CRC failed

Is it possible to redownload part of a file? I know this isnt related to linux.

http://www.techspot.com/vb/topic49927.html

Try it again with the -kb switch (e is called an "option" or "command"), so something like this:
So you can use a real switch. And you're most welcome.
jdk

All right. Thanks. I redownloaded my file and it works. However, ARK did not tell me what actually happened. Only running it in the terminal did I realize what had actually happened.

Thanks pal!

There is an important lesson there. I mean this:
That is the key to solving a huge percentage of problems that arise.
Congrats and once again you are very welcome.
ciao,
jdk