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[mbr] finalize protective message MBR
* Note that msg.txt uses codepage 850
This commit is contained in:
Pete Batard
parent
bfbb9d2ed5
commit
98c630d81a
4 changed files with 64 additions and 22 deletions
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@ -1,6 +1,6 @@
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/********************************************************************************/
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/********************************************************************************/
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/* MSG - A protective MBR that displays an ASCII message located in the */
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/* following sectors. */
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/* subsequent sectors. */
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/* */
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/* Copyright (c) 2019-2020 Pete Batard <pete@akeo.ie> */
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/* */
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@ -139,20 +139,50 @@ display_msg: # Display the message
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mov ax, es
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mov ds, ax
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call print_msg
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jmp halt_system
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jmp prompt_user
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display_err: # Read error -> display shorter message from this MBR
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mov si, offset err_msg
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call print_msg
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halt_system: # Halt the system
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hlt
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jmp halt_system # Just in case...
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prompt_user:
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xor ax, ax
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mov ds, ax
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mov si, offset prompt_string
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call print_msg # Prompt the user
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call flush_keyboard
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wait_for_keyboard:
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mov ah, 0x01
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int 0x16 # KEYBOARD - CHECK BUFFER, DO NOT CLEAR
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jnz reboot # Z is clear when characters are present in the buffer
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mov ah, 0x02
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int 0x16 # KEYBOARD - GET SHIFT STATUS
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and al, 0x04 # AL = shift status bits
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jz wait_for_keyboard
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reboot: # Trigger a reboot
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xor ax, ax
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mov ds, ax
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mov ax, 0x1234
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mov [0x473], ax
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jmp 0xffff:0000
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/********************************************************************************/
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/* Subroutines */
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/********************************************************************************/
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flush_keyboard: # Flush the keyboard buffer
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mov ah, 0x01
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int 0x16 # KEYBOARD - CHECK BUFFER, DO NOT CLEAR
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jz 0f # Z is set if no character in buffer
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mov ah, 0x00
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int 0x16 # KEYBOARD - READ CHAR FROM BUFFER
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loop flush_keyboard
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0: ret
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# ---------------------------------------------------------------------------
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print_msg: # Print NUL terminated string in DS:SI to console
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lodsb
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cmp al, 0x00 # NUL?
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@ -204,7 +234,9 @@ print_msg: # Print NUL terminated string in DS:SI to console
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/* Data section */
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/********************************************************************************/
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err_msg:
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.string "*** ERROR: THIS MEDIA CANNOT BOOT IN LEGACY MODE ***"
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.string "\r\n \\04*** ERROR: THIS MEDIA CANNOT BOOT IN LEGACY MODE ***\\07\r\n"
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prompt_string:
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.string "\r\n\r\n \\70Please remove this media and press any key to reboot\\07"
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/********************************************************************************/
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/* From offset 0x1b8, the MBR contains the partition table and signature data */
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BIN
res/mbr/msg.bin
BIN
res/mbr/msg.bin
Binary file not shown.
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@ -1,11 +1,21 @@
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****************************************
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*** ERROR: LEGACY BOOT OF UEFI MEDIA ***
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****************************************
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\07
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\70 ÉÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ» \07
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\70 º º \07
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\70 º \74ERROR: BIOS/LEGACY BOOT OF UEFI-ONLY MEDIA\70 º \07
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\70 º º \07
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\70 ÈÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍͼ \07
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This drive can only boot in UEFI mode.
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It can not boot in BIOS/Legacy mode.
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If you want to boot this drive in BIOS/Legacy mode, you
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should recreate it in Rufus using the following settings:
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* Partition scheme -> MBR
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* Target system -> BIOS...
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This drive was created by Rufus [\09https://rufus.ie\07].
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It can boot in \04UEFI mode only\07 but you are trying to
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boot it in BIOS/Legacy mode. THIS WILL NOT WORK!
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To remove this message you need to do \02ONE\07 of the following:
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o If this computer supports UEFI, go to the UEFI settings
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and disable or lower the priority of \09CSM/Legacy mode\07.
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o \02OR\07 Recreate the drive in Rufus and use:
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* \09Partition scheme\07 -> \09MBR\07.
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* \09Target system\07 -> \09BIOS (...)\07
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o \02OR\07 Erase the whole drive in Rufus by selecting:
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* \09Boot Type\07 -> \09Non bootable\07
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10
src/rufus.rc
10
src/rufus.rc
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@ -33,7 +33,7 @@ LANGUAGE LANG_NEUTRAL, SUBLANG_NEUTRAL
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IDD_DIALOG DIALOGEX 12, 12, 232, 326
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STYLE DS_SETFONT | DS_MODALFRAME | DS_CENTER | WS_MINIMIZEBOX | WS_POPUP | WS_CAPTION | WS_SYSMENU
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EXSTYLE WS_EX_ACCEPTFILES
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CAPTION "Rufus 3.9.1618"
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CAPTION "Rufus 3.9.1619"
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FONT 9, "Segoe UI Symbol", 400, 0, 0x0
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BEGIN
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LTEXT "Drive Properties",IDS_DRIVE_PROPERTIES_TXT,8,6,53,12,NOT WS_GROUP
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@ -394,8 +394,8 @@ END
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//
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VS_VERSION_INFO VERSIONINFO
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FILEVERSION 3,9,1618,0
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PRODUCTVERSION 3,9,1618,0
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FILEVERSION 3,9,1619,0
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PRODUCTVERSION 3,9,1619,0
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FILEFLAGSMASK 0x3fL
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#ifdef _DEBUG
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FILEFLAGS 0x1L
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@ -413,13 +413,13 @@ BEGIN
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VALUE "Comments", "https://rufus.ie"
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VALUE "CompanyName", "Akeo Consulting"
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VALUE "FileDescription", "Rufus"
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VALUE "FileVersion", "3.9.1618"
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VALUE "FileVersion", "3.9.1619"
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VALUE "InternalName", "Rufus"
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VALUE "LegalCopyright", "© 2011-2020 Pete Batard (GPL v3)"
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VALUE "LegalTrademarks", "https://www.gnu.org/licenses/gpl-3.0.html"
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VALUE "OriginalFilename", "rufus-3.9.exe"
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VALUE "ProductName", "Rufus"
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VALUE "ProductVersion", "3.9.1618"
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VALUE "ProductVersion", "3.9.1619"
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END
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END
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BLOCK "VarFileInfo"
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