GNU GRUB - Bugs: bug #32998, grub-mkrescue ISO images bootable...
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bug #32998: grub-mkrescue ISO images bootable as disk (like isohybrid) but not mountable within Linux
Submitter: | Josh Triplett <joshtriplett> | ||
Submitted: | Tue 05 Apr 2011 02:55:31 AM UTC | ||
Category: | None | Severity: | Minor |
Priority: | 3 - Low | Item Group: | Feature Request |
Status: | None | Privacy: | Public |
Assigned to: | None | Originator Name: | |
Open/Closed: | Open | Release: | Bazaar - trunk |
Release: | Reproducibility: | Every Time | |
Planned Release: | 2.03+ |
Jump to the original submission
Fri 01 Mar 2013 02:38:52 PM UTC, comment #12: |
Mark Ferrell <mferrell> |
Fri 01 Mar 2013 02:33:20 PM UTC, comment #11: +verbatime+
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Mark Ferrell <mferrell> |
Fri 01 Mar 2013 02:16:29 PM UTC, comment #10: Mounting the entire ISO image (/dev/sda) will result in the entire device being marked as busy, and so no other partitions will be accessible so long as the ISO is mounted.
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Mark Ferrell <mferrell> |
Sat 16 Jun 2012 11:29:32 PM UTC, comment #9: We're not going to use isohybrid for a whole range of reasons. Instead we collaborate with xorriso and add needed features to it. Secondary FAT generation is on the table but not (rather not only) because of this problem. This is still a bug in automount programs as they mount FAT instead of iso9660+rockridge and so any POSIX attributes are lost. |
Vladimir Serbinenko <phcoder>![]() |
Sat 16 Jun 2012 11:20:10 PM UTC, comment #8: Josh, I was about preparing a patch to present to Validimir but I ran into a problem. When running isohybrid on the resulting .iso file I get this error:
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Sebastian Pipping <hartwork> |
Sat 16 Jun 2012 09:35:41 PM UTC, comment #7: isohybrid creates a secondary FAT filesystem for this but it's more of a workaround for automount problem. |
Vladimir Serbinenko <phcoder>![]() |
Sat 16 Jun 2012 09:29:26 PM UTC, comment #6:
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Josh Triplett <joshtriplett> |
Sat 16 Jun 2012 09:17:04 PM UTC, comment #5: Sounds like the bug of automounting. You should take this to automount guys rather than complaining here. |
Vladimir Serbinenko <phcoder>![]() |
Sat 16 Jun 2012 08:37:34 PM UTC, comment #4: Not quite. Mounting grub.iso as a whole works the same as mounting the disk rather than the partition. Try putting the .iso you generated on a USB disk, inserting it, and seeing if automounting works. Because the disk has a partition table, Linux will detect the partitions, and the automatic mounting mechanisms will attempt to mount the partition rather than the whole disk; attempting to mount the partition will fail.
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Josh Triplett <joshtriplett> |
Sat 16 Jun 2012 05:10:21 PM UTC, comment #3: Short version: I think this bug can be closed.
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Sebastian Pipping <hartwork> |
Tue 05 Apr 2011 03:01:49 PM UTC, comment #2: I realize that mounting the whole disk rather than the partition would work. However, because the disk has a partition table on it, Linux detects the partition, and then the automatic mounting tools try to mount the partition. That works for isohybrid disks, but not for disks created by grub-mkrescue. How does isohybrid make this work, and could grub-mkrescue do the same thing? |
Josh Triplett <joshtriplett> |
Tue 05 Apr 2011 06:55:29 AM UTC, comment #1: You have to mount sdX, not sdX1.
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Vladimir Serbinenko <phcoder>![]() |
Tue 05 Apr 2011 02:55:31 AM UTC, original submission:
grub-mkrescue creates .iso images which include a magic hard disk partition table and boot sector at the beginning, making them work either as a bootable CD or as a bootable USB disk, like isohybrid disks. However, unlike isohybrid disks, the disk images built by grub-mkrescue will not mount on a normal Linux system. dmesg says "ISOFS: Unable to identify CD-ROM format.".
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Josh Triplett <joshtriplett> |
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Follow 5 latest changes.
Date | Changed by | Updated Field | Previous Value | => | Replaced by |
---|---|---|---|---|---|
2016-03-02 | phcoder | Planned Release | None | ![]() |
2.03+ |
2012-06-03 | phcoder | Priority | 5 - Normal | ![]() |
3 - Low |
Item Group | None | ![]() |
Feature Request | ||
2012-02-01 | phcoder | Severity | Major | ![]() |
Minor |
2011-04-05 | joshtriplett | Carbon-Copy | - | ![]() |
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