I am currently investigating firmware of an embedded system (car navigation) and have identified the OS as QNX.

The firmware has .ifs files which I was able to extract/unpack using QNX dumpifs tool and .img files. The .img files do not appear to be compressed, is there a file format or dump tool for QNX .img files?

/edit: some extra information file -sL file.img reports x86 boot sector Mount attempt in Ubuntu mount -t qnx6 ./file.img -o loop/dev/loop1,blocksize=512 /media/qnx fails with wrong fs type, bad option, bad superblock on /dev/loop1

dmesg reports qnx4: wrong fsid in superblock or qnx6: invalid mount operation

cat /proc/filesystems reports both qnx4 and qnx6

1 Answer 1


Last time I worked with .img file it was image of qnx6 file system. I using linux with installed qnx6 drivers, so mount -t qnx6 works for me.

In addition you can download QNX sample virtual machine from qnx.com/download/index.html ,run it, mount img using standard qnx command line tools and scp it outside.

  • Is there a distribution that supports qnx6 out of the box? RHEL/Centos don't seem to have any qnx support, and Ubuntu has qnx4, but no qnx6, apparently. Commented Mar 4, 2015 at 6:58
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    Sorry, I have gentoo, it supports everything from the box if configured properly. In addition you can download sample VM of qnx 6.5 (qnx.com/download/index.html) and scp mounted data outside from there.
    – w s
    Commented Mar 4, 2015 at 7:05
  • Here is a direct download link for the Zipped VMware image of QNX Neutrino 6.5.0 Runtime environment: qnx.com/download/feature.html?programid=20725
    – Remko
    Commented Mar 4, 2015 at 21:27
  • @ws tried your suggestions but doesn't work for me (see edit), also installed QNX VM but how to transfer .img file to the VM (network doesn't work on VMware Workstation). Any ideas?
    – Remko
    Commented Mar 11, 2015 at 21:14
  • mount -t qnx6 works in QNX VM so am able to access the files now but would be much easier from Linux :D
    – Remko
    Commented Mar 11, 2015 at 21:30

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