Follow-up Comment #3, bug #32998 (project grub): Short version: I think this bug can be closed.
I just check with GRUB 2.00~beta6. I am able to mount the resulting .iso file directly: # grub2-mkrescue --output=grub.iso Enabling BIOS support ... xorriso 1.2.2 : RockRidge filesystem manipulator, libburnia project. Drive current: -outdev 'stdio:grub.iso' Media current: stdio file, overwriteable Media status : is blank Media summary: 0 sessions, 0 data blocks, 0 data, 55.0g free Added to ISO image: directory '/'='/tmp/tmp.2o3txZpcPK' xorriso : UPDATE : 224 files added in 1 seconds xorriso : UPDATE : 224 files added in 1 seconds xorriso : NOTE : Copying to System Area: 28105 bytes from file '/tmp/tmp.B7abx1jAmr' xorriso : UPDATE : 100.00% done ISO image produced: 1058 sectors Written to medium : 1058 sectors at LBA 0 Writing to 'stdio:grub.iso' completed successfully. # mkdir grub-iso-dir # sudo mount grub.iso grub-iso-dir # ls -al grub-iso-dir total 10 dr-xr-xr-x 1 root root 2048 Jun 16 19:01 . drwxr-xr-x 16 sping sping 4096 Jun 16 19:01 .. dr-xr-xr-x 1 root root 2048 Jun 16 19:01 boot -r--r--r-- 1 root root 2048 Jun 16 19:01 boot.catalog _______________________________________________________ Reply to this item at: <http://savannah.gnu.org/bugs/?32998> _______________________________________________ Message sent via/by Savannah http://savannah.gnu.org/ _______________________________________________ Bug-grub mailing list Bug-grub@gnu.org https://lists.gnu.org/mailman/listinfo/bug-grub