GNU GRUB - Bugs: bug #17653, [grub2] must probe for partmap in...
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bug #17653: [grub2] must probe for partmap in (fdX), because some BIOS detect USB drives as floppies
Submitter: | Nikolaj (unDEFER) Krivchenkov <undefer> | ||
Submitted: | Fri 08 Sep 2006 07:38:33 PM UTC | ||
Category: | Disk & Partition | Severity: | Major |
Priority: | 5 - Normal | Item Group: | None |
Status: | Fixed | Privacy: | Public |
Assigned to: | None | Originator Name: | |
Open/Closed: | Closed | Release: | Bazaar - trunk |
Release: | 1.98 | Reproducibility: | Every Time |
Planned Release: | None |
Jump to the original submission
Mon 25 Aug 2008 04:36:17 PM UTC, comment #6: |
Felix Zielcke <fzielcke> |
Thu 20 Dec 2007 06:20:43 PM UTC, comment #5: Can you please build GRUB 2 with the attached patch, boot from it, and use the (now modified) "ls" command to determine the number of sectors your BIOS reports that these "fake" floppies have?
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Robert Millan <robertmh> |
Sat 30 Dec 2006 09:36:37 AM UTC, comment #4: On GRUB side it's interesting too. It's quite unfortunate situation: during GRUB setup the device is seen as "HDD" while on boot BIOS presents it twisted to a "floppy".
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Jozef Hitzinger <hico> |
Sat 30 Dec 2006 09:16:43 AM UTC, comment #3: More news from syslinux front: Looking at source, first thing it does is some floppy block ax=0 int 13h call, then tries to detect if LBA (EBIOS) is needed. It then prints it booted using "CBIOS", i.e. the reads were done using CHS calls. So far so good. It may be interesting to put in debug prints that reveal geometry used.
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Jozef Hitzinger <hico> |
Thu 28 Dec 2006 08:14:33 PM UTC, comment #2: Hi,
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Jozef Hitzinger <hico> |
Fri 08 Sep 2006 08:34:07 PM UTC, comment #1: In the grub 0.97 I have the same problem.
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Nikolaj (unDEFER) Krivchenkov <undefer> |
Fri 08 Sep 2006 07:38:33 PM UTC, original submission:
Hello!
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Nikolaj (unDEFER) Krivchenkov <undefer> |
Depends on the following items: None found
Items that depend on this one: None found
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Follow 6 latest changes.
Date | Changed by | Updated Field | Previous Value | => | Replaced by |
---|---|---|---|---|---|
2010-08-27 | phcoder | Status | None | Fixed | |
Open/Closed | Open | Closed | |||
Release | 0.95 | 1.98 | |||
Release | None | Bazaar - trunk | |||
2007-12-20 | robertmh | Attached File | - | Added fake_floppy_size.diff, #14677 | |
2007-12-15 | robertmh | Summary | Sometimes (on some motherboards?) Flash Drives detected as floppy disk (fd1). How I can get access to partitions? | [grub2] must probe for partmap in (fdX), because some BIOS detect USB drives as floppies |
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Corresponding source code
Is this still a problem with recent SVN?
If so could you please try Robert's patch