diff options
Diffstat (limited to 'backends/platform/ds/arm9/source/fat/gba_nds_fat.c')
| -rw-r--r-- | backends/platform/ds/arm9/source/fat/gba_nds_fat.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/backends/platform/ds/arm9/source/fat/gba_nds_fat.c b/backends/platform/ds/arm9/source/fat/gba_nds_fat.c index 46aff1ced9..5a44e2dbd9 100644 --- a/backends/platform/ds/arm9/source/fat/gba_nds_fat.c +++ b/backends/platform/ds/arm9/source/fat/gba_nds_fat.c @@ -818,17 +818,19 @@ bool FAT_InitFiles (void) { return (false); } - // Read first sector of CF card if ( !disc_ReadSector(0, globalBuffer)) { return false; } + // Make sure it is a valid MBR or boot sector if ( (globalBuffer[0x1FE] != 0x55) || (globalBuffer[0x1FF] != 0xAA)) { return false; } + + // Check if there is a FAT string, which indicates this is a boot sector if ((globalBuffer[0x36] == 'F') && (globalBuffer[0x37] == 'A') && (globalBuffer[0x38] == 'T')) { |