diff --git a/sw/kernel/filesystems/fat32.s b/sw/kernel/filesystems/fat32.s
index 878818d..029ce48 100644
--- a/sw/kernel/filesystems/fat32.s
+++ b/sw/kernel/filesystems/fat32.s
@@ -12,7 +12,9 @@
 
 .data
 fat_start_sector: .res 2
-data_start_sector: .res 2
+data_start_sector: .res 4
+fat_size: .res 4
+
 sd_buf: .res 512
 
 bps_val_str: .asciiz "Bytes Per Sector: 0x%x\n"
@@ -23,6 +25,7 @@ fat_sect_str: .asciiz "Sectors per FAT: 0x%x\n"
 fat_size_tot_str: .asciiz "Total fat size: 0x%lx\n"
 rsv_sect_bytes_str: .asciiz "Total reserved bytes: 0x%x\n"
 rsv_sd_sectors: .asciiz "Reserved SD Sectors: 0x%x\n"
+data_start_sect_str: .asciiz "Data sector start: 0x%lx\n"
 
 .code
 
@@ -93,9 +96,15 @@ sectors_per_fat         = sd_buf + $24
     ldx bytes_per_sector+1
     jsr _imulii
     jsr pushax
+    phx
     ldy #$4
     jsr _cprintf
 
+    pla
+    lsr
+    sta fat_start_sector
+    stz fat_start_sector + 1
+
     lda #<fat_size_tot_str
     ldx #>fat_size_tot_str
     jsr pushax
@@ -107,9 +116,57 @@ sectors_per_fat         = sd_buf + $24
     lda sectors_per_fat
     ldx sectors_per_fat+1
     jsr _lmulii
+    sta fat_size
+    stx fat_size+1
+    lda sreg
+    sta fat_size+2
+    lda sreg+1
+    sta fat_size+3
+    lda fat_size
+    ldx fat_size+1
     jsr pusheax
     ldy #$6
     jsr _cprintf
 
+
+    lda fat_size
+    adc fat_start_sector
+    sta data_start_sector
+    lda fat_size+1
+    adc fat_start_sector+1
+    sta data_start_sector+1
+    lda fat_size+2
+    sta data_start_sector+2
+    lda fat_size+3
+    sta data_start_sector+3
+
+    lda #<data_start_sect_str
+    ldx #>data_start_sect_str
+    jsr pushax
+    lda data_start_sector+2
+    sta sreg
+    lda data_start_sector+3
+    sta sreg+1
+    lda data_start_sector
+    ldx data_start_sector+1
+    jsr pusheax
+    ldy #$6
+    jsr _cprintf
+
+    ; load sector <data_start> into sd_buf
+    lda data_start_sector+2
+    sta sreg
+    lda data_start_sector+3
+    sta sreg+1
+    lda data_start_sector
+    ldx data_start_sector+1
+    jsr pusheax
+    lda #<sd_buf
+    ldx #>sd_buf
+    jsr pushax
+    lda #<ptr1
+    ldx #>ptr1
+    jsr _SD_readSingleBlock
+
     rts
 .endproc