mkfs.vfat: small tweak to comments

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);