diff --git a/src/BlueSCSI.cpp b/src/BlueSCSI.cpp
index 989d3cd..f0d5b8f 100644
--- a/src/BlueSCSI.cpp
+++ b/src/BlueSCSI.cpp
@@ -58,7 +58,7 @@
 #define READ_PARITY_CHECK 0    // Perform read parity check (unverified)
 
 // HDD format
-#define MAX_BLOCKSIZE 1024     // Maximum BLOCK size
+#define MAX_BLOCKSIZE 2048     // Maximum BLOCK size
 
 // SDFAT
 #define SD1_CONFIG SdSpiConfig(PA4, DEDICATED_SPI, SD_SCK_MHZ(SPI_FULL_SPEED), &SPI)