Public bug reported:
Environment:
Xubuntu 18.04
$ lsb_release -rd
Description: Ubuntu Bionic Beaver (development branch)
Release: 18.04
$ apt-cache policy file
file:
Installed: 1:5.32-2
Candidate: 1:5.32-2
Version table:
*** 1:5.32-2 500
500 http://us.archive.ubuntu.com/ubuntu bionic/main amd64 Packages
100 /var/lib/dpkg/status
Steps-to-reproduce:
1) Download Xubuntu 16.04 ISO from
http://cdimages.ubuntu.com/xubuntu/releases/16.04/release/xubuntu-16.04
-desktop-amd64.iso
2) run: file --mime-type xubuntu-16.04-desktop-amd64.iso
3) run: file xubuntu-16.04-desktop-amd64.iso
Expected results:
Result of (2) should be:
$ file --mime-type xubuntu-16.04-desktop-amd64.iso
xubuntu-16.04-desktop-amd64.iso: application/x-iso9660-image
... and result of (3) should be:
$ file xubuntu-16.04-desktop-amd64.iso
xubuntu-16.04-desktop-amd64.iso: DOS/MBR boot sector ISO 9660 CD-ROM filesystem
data (DOS/MBR boot sector) 'Xubuntu 16.04 LTS amd64' (bootable); partition 2 :
ID=0xef, start-CHS (0x3ff,254,63), end-CHS (0x3ff,254,63), startsector 2410708,
4736 sectors
Actual results:
$ file --mime-type xubuntu-16.04-desktop-amd64.iso
xubuntu-16.04-desktop-amd64.iso: application/octet-stream
$ file xubuntu-16.04-desktop-amd64.iso
xubuntu-16.04-desktop-amd64.iso: DOS/MBR boot sector; partition 2 : ID=0xef,
start-CHS (0x3ff,254,63), end-CHS (0x3ff,254,63), startsector 2410708, 4736
sectors
ubuntuforums thread: https://ubuntuforums.org/showthread.php?t=2388736
** Affects: file (Ubuntu)
Importance: Undecided
Status: New
** Tags: bionic
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https://bugs.launchpad.net/bugs/1763570
Title:
file does not fully recognize ISO images
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