[Bug 200109] [PATCH] Minor EFI boot image enhancements

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Sun May 10 21:07:38 UTC 2015


            Bug ID: 200109
           Summary: [PATCH] Minor EFI boot image enhancements
           Product: Base System
           Version: 11.0-CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Keywords: patch
          Severity: Affects Only Me
          Priority: ---
         Component: misc
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: pfg at FreeBSD.org
          Keywords: patch

Created attachment 156626
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=156626&action=edit
Small enhancements to the EFI image generation

This is a rather silly patch (and untested since I don't use EFI on the desktop
I run FreeBSD on) to enhance the current EFI Fat image:

1- Enlarge the boot image to make it match the size of an older 5 1/4" floppy.
More space won't hurt and it seems better to use a somewhat "standard" size,
2- Set the OEM label to "MSWIN4.1". This is the recommended value in "Microsoft
Extensible Firmware Initiative FAT32 File System Specification":

"There are many misconceptions about this field. It is only a name string.
Microsoft operating systems don’t pay any attention to this field. Some FAT
drivers do. This is the reason that the indicated string, “MSWIN4.1”, is the
recommended setting, because it is the setting least likely to cause
compatibility problems. If you want to put something else in here, that is your
option, but the result may be that some FAT drivers might not recognize the
volume. Typically this is some indication of what system formatted the volume."

I doubt either of these has any effect nowadays, and I won't feel offended if
the patch is rejected, but it may be better to adopt such changes earlier
rather than later.

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