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| author | rnordier <rnordier@FreeBSD.org> | 2000-12-12 17:27:35 +0000 |
|---|---|---|
| committer | rnordier <rnordier@FreeBSD.org> | 2000-12-12 17:27:35 +0000 |
| commit | 66009fc30e546f777cfc59b5d148551c44f649e2 (patch) | |
| tree | feda7ce692a58dbd41ef9d67909c2934af3d5af0 /sys/boot/i386/boot0 | |
| parent | 6c60f0fcfdb0427636059eab44f448aa2498f8fc (diff) | |
| download | FreeBSD-src-66009fc30e546f777cfc59b5d148551c44f649e2.zip FreeBSD-src-66009fc30e546f777cfc59b5d148551c44f649e2.tar.gz | |
Add a magic number, for easier identification of boot0. At present,
this is used only by libdisk.
Diffstat (limited to 'sys/boot/i386/boot0')
| -rw-r--r-- | sys/boot/i386/boot0/boot0.s | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/sys/boot/i386/boot0/boot0.s b/sys/boot/i386/boot0/boot0.s index 5c2eca2..dcc4164 100644 --- a/sys/boot/i386/boot0/boot0.s +++ b/sys/boot/i386/boot0/boot0.s @@ -28,6 +28,7 @@ .set TBL1SZ,0xc # Table 1 size .set MAGIC,0xaa55 # Magic: bootable + .set B0MAGIC,0xbb66 # Identification .set KEY_ENTER,0x1c # Enter key scan code .set KEY_F1,0x3b # F1 key scan code @@ -393,7 +394,10 @@ os_linux: .ascii "Linu"; .byte 'x'|0x80 os_freebsd: .ascii "Free" os_bsd: .ascii "BS"; .byte 'D'|0x80 - .org PRT_OFF-0xc,0x90 + .org PRT_OFF-0xe,0x90 + + .word B0MAGIC # Magic number + # # These values are sometimes changed before writing back to the drive # Be especially careful that nxtdrv: must come after drive:, as it |
