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-rw-r--r--util-linux/mkfs_vfat.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/util-linux/mkfs_vfat.c b/util-linux/mkfs_vfat.c
index 930fd45cc..95ebcbfba 100644
--- a/util-linux/mkfs_vfat.c
+++ b/util-linux/mkfs_vfat.c
@@ -429,6 +429,7 @@ int mkfs_vfat_main(int argc UNUSED_PARAM, char **argv)
// Write filesystem image sequentially (no seeking)
//
{
+ // (a | b) is poor man's max(a, b)
unsigned bufsize = reserved_sect;
//bufsize |= sect_per_fat; // can be quite large
bufsize |= 2; // use this instead
@@ -449,9 +450,10 @@ int mkfs_vfat_main(int argc UNUSED_PARAM, char **argv)
if (volume_size_sect <= 0xffff)
STORE_LE(boot_blk->volume_size_sect, volume_size_sect);
STORE_LE(boot_blk->media_byte, media_byte);
- // Bad: this would make Linux to think that it's fat12/16
+ // wrong: this would make Linux think that it's fat12/16:
//if (sect_per_fat <= 0xffff)
// STORE_LE(boot_blk->sect_per_fat, sect_per_fat);
+ // works:
//STORE_LE(boot_blk->sect_per_fat, 0);
STORE_LE(boot_blk->sect_per_track, sect_per_track);
STORE_LE(boot_blk->heads, heads);