diff options
| author | cinap_lenrek <cinap_lenrek@gmx.de> | 2013-09-23 21:12:41 +0200 |
|---|---|---|
| committer | cinap_lenrek <cinap_lenrek@gmx.de> | 2013-09-23 21:12:41 +0200 |
| commit | 365fd745d62e9fdc43b22a0a1916c595749eb575 (patch) | |
| tree | 7cb88d3ba1ef8a6d7dd8597612e159747e4a78d2 /sys/src/boot | |
| parent | b4cdfc6c5517390d6be05b2c01e56bacc9e85ea8 (diff) | |
9bootfat: only check for fat at block 0 on floppy drives (thanks aap)
smart boot manager has a "FAT" signature in its mbr causing
9bootfat to "detect" it as a fat filesystem and then fails
to find plan9.ini.
there shouldnt be a fat filesystem on harddrives at block 0, only
on floppy drives. but some bioses use floppy drive numbers
for usb harddrives so still check for a partition table.
thanks aap for debugging this.
Diffstat (limited to 'sys/src/boot')
| -rw-r--r-- | sys/src/boot/pc/fat.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/src/boot/pc/fat.c b/sys/src/boot/pc/fat.c index 7b90234b4..99218d155 100644 --- a/sys/src/boot/pc/fat.c +++ b/sys/src/boot/pc/fat.c @@ -339,7 +339,7 @@ findfat(Fat *fat, int drive, ulong xbase, ulong lba) return -1; if(buf[0x1fe] != 0x55 || buf[0x1ff] != 0xAA) return -1; - if(lba == 0){ + if(lba == 0 && (drive & 0x80) == 0){ /* floppy */ fat->drive = drive; fat->partlba = 0; if(!conffat(fat, buf)) |