39 lines
1.4 KiB
Diff
39 lines
1.4 KiB
Diff
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From: Andrey Borzenkov <arvidjaar@gmail.com>
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Subject: [PATCH] fix off by one error in enumerating MSDOS partitions
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References: bnc#779534
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As reported in https://bugzilla.novell.com/show_bug.cgi?id=779534,
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grub2 assigns incorrect partition number to extended partitions.
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This is due to slightly non-standard EBR which contains single extended
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partition record, but no normal partition. Due to incorrect p.number
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comparison, grub2 includes it in partition numbering.
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With standard EBR first entry is "true" partition that correctly
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gets assigned next available number.
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At the point of comparison p.number is one less than partition
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number; so make correct comparison.
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Actual partition chain is visible in this attachement:
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http://bugzilla.novell.com/attachment.cgi?id=519076
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Signed-off-by: Andrey Borzenkov <arvidjaar@gmail.com>
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---
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grub-core/partmap/msdos.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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Index: grub-2.00/grub-core/partmap/msdos.c
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===================================================================
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--- grub-2.00.orig/grub-core/partmap/msdos.c
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+++ grub-2.00/grub-core/partmap/msdos.c
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@@ -196,7 +196,7 @@ grub_partition_msdos_iterate (grub_disk_
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return grub_errno;
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}
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}
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- else if (p.number < 4)
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+ else if (p.number < 3)
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/* If this partition is a logical one, shouldn't increase the
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partition number. */
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p.number++;
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