imxrt1020-evk: README: change dd command destination

Set dd "of=" to "of=/dev/sdX" to be generic and prevent host hard drive
damage.

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>

diff --git a/board/freescale/imxrt1020-evk/README b/board/freescale/imxrt1020-evk/README
index 3da72fd..abee7ca 100644 (file)
--- a/board/freescale/imxrt1020-evk/README
+++ b/board/freescale/imxrt1020-evk/README
@@ -11,11 +11,11 @@ This will generate the SPL image called SPL and the u-boot.img.
 
 - Flash the SPL image into the micro SD card:
 
-sudo dd if=SPL of=/dev/mmcblk0 bs=1k seek=1; sync
+sudo dd if=SPL of=/dev/sdX bs=1k seek=1; sync
 
 - Flash the u-boot.img image into the micro SD card:
 
-sudo dd if=u-boot.img of=/dev/sdb bs=1k seek=128; sync
+sudo dd if=u-boot.img of=/dev/sdX bs=1k seek=128; sync
 
 - Jumper settings: