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-rw-r--r--gnu/build/bootloader.scm7
1 files changed, 5 insertions, 2 deletions
diff --git a/gnu/build/bootloader.scm b/gnu/build/bootloader.scm
index 5ec839f902..3916930c89 100644
--- a/gnu/build/bootloader.scm
+++ b/gnu/build/bootloader.scm
@@ -38,10 +38,13 @@
(lambda (input)
(let ((bv (get-bytevector-n input size)))
(call-with-port
+ ;; Do not use "call-with-output-file" that would truncate the file.
(open-file-output-port device
- (file-options no-truncate no-create)
+ (file-options no-truncate no-fail)
(buffer-mode block)
- (native-transcoder))
+ ;; Use the binary-friendly ISO-8859-1
+ ;; encoding.
+ (make-transcoder (latin-1-codec)))
(lambda (output)
(seek output offset SEEK_SET)
(put-bytevector output bv)))))))