diff options
| -rw-r--r-- | src/arch/i386/interface/pcbios/int13.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/arch/i386/interface/pcbios/int13.c b/src/arch/i386/interface/pcbios/int13.c index 53817c7a..a26dcff4 100644 --- a/src/arch/i386/interface/pcbios/int13.c +++ b/src/arch/i386/interface/pcbios/int13.c @@ -543,8 +543,9 @@ void register_int13_drive ( struct int13_drive *drive ) { /* Assign drive number if none specified, update BIOS drive count */ get_real ( num_drives, BDA_SEG, BDA_NUM_DRIVES ); - if ( ! drive->drive ) - drive->drive = ( num_drives | 0x80 ); + if ( ( drive->drive & 0xff ) == 0xff ) + drive->drive = num_drives; + drive->drive |= 0x80; num_drives++; if ( num_drives <= ( drive->drive & 0x7f ) ) num_drives = ( ( drive->drive & 0x7f ) + 1 ); |