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Old 04-27-2011, 07:51 PM   #1
rmknox
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CD reads on win98 but appears to ber empty on Fedora14


I got a CD with a book - doc files.

When I look at it with nautilus or with wine notepad it tells me that the CD is empty. capacity 49.4 MB. It does show the name of the CD BOOK2XTRAS - so at least the name field in the first sector is where it is supposed to be.

When I boot to my 2nd drive - an old win98 sys - it sees all the files on the CD.

Same CD drive in each case. I go to another fedora computer I have and it does n.ot see the contents either.

When I try to read it using DD it tells me there is nothing there.
Code:
[root@knox media]# dd if=/media/BOOK2XTRAS/
dd: reading `/media/BOOK2XTRAS/': Is a directory
0+0 records in
0+0 records out
0 bytes (0 B) copied, 0.000150755 s, 0.0 kB/s
This is the only CD I've ever seen that will read in windows and not in Fedora.

The publisher suggested I try wine. To please them I ran wine notepad. Notepad sees nothing there (of course it is using the Fedora file system - but I didn't want to argue.

I suspect that the CD was written by some microsoft utility that writes a defective format but one that is acceptable to microsoft op systems -"undoeumented feature".

Can anyone shed any light?

It reminds me of diskettes in dos - where the spec calls for 2 index files but dos is happy with one.

I imagine I can dump it from win98 and research it, but maybe someone knows what is going on.

Dick

I realize that I have not done anything to mount it. Might that be the problem? Since the name of the CD shows I have assumed that the system has mounted it already.
 
Old 04-27-2011, 08:03 PM   #2
kindofabuzz
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I don't know an answer but your best bet would be to copy the docs over to another disc or USB stick and go from there.
 
1 members found this post helpful.
Old 04-27-2011, 08:07 PM   #3
rmknox
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yes - I can copy them when booted in windows and read them from the windows drive from Fedora, but I'm curious to understand what is happening
 
Old 04-27-2011, 08:23 PM   #4
rmknox
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when I ask the system what is mounted it replies
Code:
/dev/sr0 on /media/BOOK2XTRAS type iso9660 (ro,nosuid,nodev,uhelper=udisks,uid=500,gid=500,iocharset=utf8,mode=0400,dmode=0500)
when i ask same question with win 98 distribution i get
Code:
/dev/sr0 on /media/WIN98 SE type iso9660 (ro,nosuid,nodev,uhelper=udisks,uid=500,gid=500,iocharset=utf8,mode=0400,dmode=0500
they look the same - but when i have the windows cd in the drive i can see its contents

whereas

when i have the documentation cd in the drive it shows an empty CD

and yet when i boot windows the drive displays its contents
 
Old 04-27-2011, 09:13 PM   #5
Mr. Bill
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Yes, ".doc" is one of those obscure MS formats that was conveniently changed with different versions of MS-Office. Notepad, btw, doesn't recognize .doc, only .txt files. You might try Write or Wordpad in Wine, or open it with OpenOffice.
 
Old 04-27-2011, 11:38 PM   #6
rmknox
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perhaps i have not been clear

the disk presents itself as if it were empty when viewed by fedora

it shows various files when viewed by windows

when I dismount it and read it with dd and dump it with od it clerly has stuff on it

i have not researched the iso format - but based on the dump i suspect it is a compressed format
 
  


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