Taken from: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=906414.

Author: Lukas Schwaighofer <lukas@schwaighofer.name>
Description: Strip the .note.gnu.property section for the mbr. This section is
 added since binutils Debian version 2.31.1-2 and causes mbr.bin to grow in
 size beyond what can fit into the master boot record.
---
 mbr/i386/mbr.ld   | 1 +
 mbr/x86_64/mbr.ld | 1 +
 2 files changed, 2 insertions(+)

diff --git a/mbr/i386/mbr.ld b/mbr/i386/mbr.ld
index d14ba80..5368346 100644
--- a/mbr/i386/mbr.ld
+++ b/mbr/i386/mbr.ld
@@ -70,4 +70,5 @@ SECTIONS
   .debug_typenames 0 : { *(.debug_typenames) }
   .debug_varnames  0 : { *(.debug_varnames) }
   /DISCARD/ : { *(.note.GNU-stack) }
+  /DISCARD/ : { *(.note.gnu.property) }
 }
diff --git a/mbr/x86_64/mbr.ld b/mbr/x86_64/mbr.ld
index ae27d49..b8c0d89 100644
--- a/mbr/x86_64/mbr.ld
+++ b/mbr/x86_64/mbr.ld
@@ -69,4 +69,5 @@ SECTIONS
   .debug_typenames 0 : { *(.debug_typenames) }
   .debug_varnames  0 : { *(.debug_varnames) }
   /DISCARD/ : { *(.note.GNU-stack) }
+  /DISCARD/ : { *(.note.gnu.property) }
 }
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<div class='path'>path: <a href='/guix/log/?id=82e6a8fed73d4b86ee6229d135a5122b9d61d833'>root</a>/<a href='/guix/log/tests?id=82e6a8fed73d4b86ee6229d135a5122b9d61d833'>tests</a>/<a href='/guix/log/tests/uuid.scm?id=82e6a8fed73d4b86ee6229d135a5122b9d61d833'>uuid.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/tests/uuid.scm?id=82e6a8fed73d4b86ee6229d135a5122b9d61d833&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2019-05-07 12:18:44 +0200'>2019-05-07</span></td><td><a href='/guix/commit/tests/uuid.scm?id=6c5790a2faf8ffc401e43b13425a707394e40874'>uuid: 'fat-uuid-&gt;string' preserves leading zeros.</a><span class='msg-avail'>...<span class='msg-tooltip'>Fixes &lt;https://bugs.gnu.org/35582&gt;.
Reported by sirgazil &lt;sirgazil@zoho.com&gt;.

Previously, leading zeros would be removed, leading to an "invalid"
UUID:

  (uuid-&gt;string (uuid "00CA-050E" 'fat32))
  ⇒ "CA-50E"
  (string-&gt;uuid "CA-50E" 'fat32)
  ⇒ #f

* gnu/system/uuid.scm (fat-uuid-&gt;string): Pad digits with zeros.
* tests/uuid.scm ("uuid, FAT32, leading zeros preserved"): New test.
</span></span></td><td>Ludovic Courtès</td></tr>