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-rw-r--r--src/ext4_mbr.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/ext4_mbr.c b/src/ext4_mbr.c
index 0376545..c143c02 100644
--- a/src/ext4_mbr.c
+++ b/src/ext4_mbr.c
@@ -166,8 +166,8 @@ int ext4_mbr_write(struct ext4_blockdev *parent, struct ext4_mbr_parts *parts, u
if (!cyl_part)
continue;
- uint32_t part_start = cyl_it * cyl_size;
- uint32_t part_size = cyl_part * cyl_size;
+ uint64_t part_start = ((uint64_t) cyl_it) * cyl_size;
+ uint64_t part_size = ((uint64_t) cyl_part) * cyl_size;
if (i == 0) {
part_start += 63;