M28: Document that units has to be set to sectors on SD bootcard

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Wolfgang Denk <wd@denx.de>

diff --git a/doc/README.m28 b/doc/README.m28
index b749ce022c87aee951c229f1347e68d8d12f1486..548982f18118e03866e22322ea5c4b0e2c5e41cc 100644 (file)
--- a/doc/README.m28
+++ b/doc/README.m28
@@ -113,7 +113,8 @@ must have the following parameters:
        * Partition size ........ at least 1024 kb
        * Partition type ........ 0x53 (sometimes "OnTrack DM6 Aux3")
 
-For example in Linux fdisk, the sequence for a clear card is the following:
+For example in Linux fdisk, the sequence for a clear card follows. Be sure to
+run fdisk with the option "-u=sectors" to set units to sectors:
 
        * o ..................... create a clear partition table
        * n ..................... create new partition