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diff --git a/sbin/newfs_msdos/mkfs_msdos.c b/sbin/newfs_msdos/mkfs_msdos.c
--- a/sbin/newfs_msdos/mkfs_msdos.c
+++ b/sbin/newfs_msdos/mkfs_msdos.c
@@ -568,14 +568,7 @@
x1 += (bpb.bpbBigFATsecs - 1) * bpb.bpbFATs;
}
if (set_res) {
- if (o.align)
- alignto = bpb.bpbSecPerClust;
- else
-#ifdef PAGE_SIZE
- alignto = PAGE_SIZE / bpb.bpbBytesPerSec;
-#else
- alignto = 1;
-#endif
+ alignto = bpb.bpbSecPerClust;
if (alignto > 1) {
/* align data clusters */
alignment = (bpb.bpbResSectors + bpb.bpbBigFATsecs * bpb.bpbFATs + rds) %
diff --git a/sbin/newfs_msdos/newfs_msdos.8 b/sbin/newfs_msdos/newfs_msdos.8
--- a/sbin/newfs_msdos/newfs_msdos.8
+++ b/sbin/newfs_msdos/newfs_msdos.8
@@ -23,7 +23,7 @@
.\" OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
.\" IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
.\"
-.Dd June 2, 2024
+.Dd June 6, 2024
.Dt NEWFS_MSDOS 8
.Os
.Sh NAME
@@ -91,13 +91,11 @@
appended to the offset specifies that the
number is in sectors, kilobytes, megabytes or gigabytes, respectively.
.It Fl A
-Attempt to cluster align the data area, useful for SD card.
-If neither the
-.Fl A
-nor
+Attempt to cluster align the data area, useful for flash based storage.
+This option is enabled by default, unless a number of reserved sectors
+is specified using the
.Fl r
-option is used, the number of reserved sectors is set to a value that aligns
-the start of the data area to a multiple of the page size of the host.
+option.
.It Fl B Ar boot
Get bootstrap from file.
.It Fl C Ar create-size
@@ -173,12 +171,10 @@
Number of hidden sectors.
.It Fl r Ar reserved
Number of reserved sectors.
-If neither the
-.Fl A
-nor
+If the
.Fl r
-option is used, the number of reserved sectors is set to a value that aligns
-the start of the data area to a multiple of the page size of the host.
+option is not used, the number of reserved sectors is set to a value that
+aligns the start of the data area to a multiple of the cluster size.
.It Fl s Ar total
File system size.
.It Fl u Ar track-size

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