···

       
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30
       
 
       
To check the content of an ISO image, mount it like so:

     

       
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```ShellSession

     

       
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-
       
# mount -o loop -t iso9660 ./result/iso/cd.iso /mnt/iso

     

       
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33
       
+
       
# mount -o loop -t iso9660 ./result/iso/nixos-image-25.05pre-git-x86_64-linux.iso /mnt/iso

     

       
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```

     

       
35
       
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## Additional drivers or firmware {#sec-building-image-drivers}