Changeset 145 for trunk/bootcode/regular/other.asm

Timestamp:

Apr 8, 2017, 12:27:40 AM (8 years ago)

Author:

Ben Rietbroek

Message:

Moved updating the MBR after 'PRECRAP' has finished [v1.1.1-testing]

CAUTION:
This is a testbuild !
AirBoot uses the BIOS to access disks and a small coding error can trash
partition tables or other vital disk structures. You are advised to make
backups of TRACK0 and EBRs before using this testbuild. More info at:
​https://rousseaux.github.io/netlabs.air-boot/pdf/AirBoot-v1.1.0-manual.pdf

File:

• trunk/bootcode/regular/other.asm (modified) (1 diff)

trunk/bootcode/regular/other.asm

@@ -183 +183 @@
         call    MBR_TeletypeNL
 
-        ; Write MBR back to disk to sync MBR variables.
-        ; Otherwise subsequent MBR loads will differ from the RAM stored one,
-        ; which is used by MBR protection to validate parts of the MBR.
-        xor     bx, bx
-        mov     cx, 1
-        xor     dh, dh
-        mov     dl, [BIOS_BootDisk]
-        mov     al, 1
-        mov     ah, 03h
-        int     13h
-        ;!
-        ;! TODO: Check success
-        ;! Yes, we should check for errors here, coz it would mean AirBoot
-        ;! was loaded from a disk where the MBR cannot be written !
-        ;!
-
-
         ;
         ; Phase 1 Indicator