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Recently I came across a kind of new iso files which are not readable when mounted. Mount operation shows no errors, but directory listing looks like this:

?DirectoryName1/file_name1
?DirectoryName1/file_name2
?DirectoryName1/file_name3
?DirectoryName1/file_name4
...

?DirectoryNameN/file_name1
?DirectoryNameN/file_name2
?DirectoryNameN/file_name3
?DirectoryNameN/file_name4

I.e., all files are shown in root directory.

The isoinfo -d -i myiso.iso reports the following:

CD-ROM is in ISO 9660 format
System id: 
Volume id: label1          
Volume set id: 
Publisher id: 
Data preparer id: 
Application id: 
Copyright File id: 
Abstract File id: 
Bibliographic File id: 
Volume set size is: 1
Volume set sequence number is: 1
Logical block size is: 2048
Volume size is: 159676
Joliet with UCS level 3 found
NO Rock Ridge present

Is it just Joliet with UCS level 3 found which is not supported?

p.s. Winrar on windows extracts it fine.

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  • What does file myiso.iso tell you? BTW, both of the working .isos (for other uses) I have are Joliet with UCS level 3. – waltinator Nov 27 '16 at 19:23
  • It says badiso.iso: ISO 9660 CD-ROM filesystem data 'label1'. Nothing outstanding. – igorp1024 Nov 27 '16 at 19:56

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