diff --git a/constants/ATA.inc b/constants/ATA.inc
index 09fa7f2..c22186c 100644
--- a/constants/ATA.inc
+++ b/constants/ATA.inc
@@ -3,11 +3,11 @@
 ATA_EXECUTE_DEVICE_DIAGNOSTIC    equ 0x90
 ATA_IDENTIFY_DEVICE              equ 0xec
 ATA_INITIALIZE_DEVICE_PARAMETERS equ 0x91
-ATA_READ_SECTORS                 equ 0x20
-ATA_READ_VERIFY_SECTORS          equ 0x40
+ATA_READ_SECTORS                 equ 0x20				; WITH RETRY
+ATA_READ_VERIFY_SECTORS          equ 0x40				; WITH RETRY
 ;  equ 0x70-0x7f
 ATA_SEEK                         equ 0x70
-ATA_WRITE_SECTORS                equ 0x30
+ATA_WRITE_SECTORS                equ 0x30				; WITH RETRY
 
 
 ; ****** additional commands ************