Wikis USB-Boot (en)
[Article: Wiki-eCS-OS/2-USB-Boot-en--Chapter Modification/Extension of IBM Boot Manager Function | Diskussion ]
[Edit]1 Modification/Extension of IBM Boot Manager Function
[Edit]1.1 Add the "I13X Test and Flag Setting code" to the Partition Boot Record PBR of the BMRG Primary Partition
[Edit]1.1.1 Intention
Make the IBM BMGR Function independent from the IBM OS/2 MBR with the Code I13X Test
[Edit]1.1.2 Design
1. Add the "I13X Test and Flag Setting code" to the PBR of the BMGR partition
2. Based on the latest BMGR Code ( LVM Code FixLevel 14.105 )
2.1 There is NLS dependent messages text in the PBR
2.2 Replacing with text string with am message code number does makes
- the modification NLS independent
- frees address space for the "Rucksack" Code
- identifies the message originator - BMGR - to the user
SYS-BMGR-001 just the message code length + 3 = 0Fx
English: length 1Dx
"A disk read error occurred"
German : length 25x
"Fehler beim Lesen des Datenträgers"
SYS-BMGR-002 just the message code length + 3 = 0Fx
English: length 27x
"Insert a system diskette and restart"
German : length 31x
"1.Systemdiskette einlegen und System neu starten"
3. Dazu müsste der PBR - Partition Boot Record des BMGR mit dem
"I13X Test / Flag setzten Code " aus dem OS/2 MBR gepatched werden.
Idealerweise sollte der I13x Test und das Flag setzen in einem Code
Rucksack vor der Testabfrage auf das I13X Flag durchführt werden.
Dies wäre eine Patch, bei dem die Platte auch an ein System mit nicht
I13X Support gehängt werden kann, und das System reagiert dann wie ein
nicht modifiziertes System.
( d.h. der Patch hätte in keinem Fall eine negative Folge)
[Edit]1.1.3 Stages of implementation
1. Test Environment - Keep is simple and minimum additional effort
1. Extract the PBR form HDD to img file via DFSEE
2. Patch the img file of the PBR
3. Restore/replace the BMGR PBR on the HDD with the patched img file
2. Implement an automatic patch process via DFSee function
3. Patch the LVM.exe to write an patched PBR with function create BMGR partition
4. Patch the LVM Java GUI version to write an patched PBR
[Edit]1.1.4 Collecting information for the implementation / doing
Dump of the PBR IBM BMGR partition of my T23 main system HDD - 14.105 codelevel via DFSee 9.14
[PgUp] 0 1 2 3 4 5 6 7 8 9 a b c d e f [ItemUp] [LineUp] 000000 e9 8e 00 41 50 4a 26 57 4e 1f 00 00 02 04 01 00 [...APJ&WN.......] 000010 02 00 02 20 00 f8 0c 00 20 00 40 00 20 00 00 00 [... .... .@. ...] 000020 00 00 00 00 80 00 29 00 00 00 00 00 00 00 00 00 [......).........] 000030 00 00 00 00 00 00 46 41 54 20 20 20 20 20 00 00 [......FAT ..] 000040 00 00 00 00 00 00 00 00 00 00 00 80 00 82 2b 1d [..............+.] 000050 02 81 2b 80 00 00 00 00 00 00 00 00 00 00 00 00 [..+.............] 000060 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [................] 000070 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [................] 000080 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [................] 000090 00 fa 33 c0 8e d0 bc 00 7c fb 68 c0 07 1f bb 4f [..3.....|.h....O] 0000A0 00 81 3e bc 03 33 cc 74 03 8b 57 04 88 16 4b 00 [..>..3.t..W...K.] 0000B0 88 16 24 00 68 00 0a 07 e8 13 00 8a 16 24 00 68 [..$.h........$.h] 0000C0 00 0a 07 bb 4b 00 26 88 17 06 68 dc 0f cb bb 4f [....K.&...h....O] 0000D0 00 68 00 30 0f a1 64 66 81 3e 00 00 49 31 33 58 [.h.0..df.>..I13X] 0000E0 74 38 b9 01 00 83 7f 02 00 75 02 eb 2c 53 51 8b [t8.......u..,SQ.] 0000F0 07 8b 4f 02 8b 57 04 33 db 8a 16 24 00 cd 13 72 [..O..W.3...$...r] 000100 69 59 5b 8b 07 32 e4 c1 e0 05 8c c2 03 d0 8e c2 [iY[..2..........] 000110 83 c3 06 41 83 f9 0a 7e cc c3 1e 52 33 d2 b9 01 [...A...~...R3...] 000120 00 83 7f 02 00 75 02 eb 0b 02 17 83 c3 06 41 83 [.....u........A.] 000130 f9 0a 7e ed 0f a0 1f be 08 00 66 a1 04 00 66 89 [..~.......f...f.] 000140 44 08 66 33 c0 c7 04 10 00 89 54 02 89 44 04 c7 [D.f3......T..D..] 000150 44 06 00 0a 66 89 44 0c 5a b4 42 cd 13 72 0b 66 [D...f.D.Z.B..r.f] 000160 a1 04 00 26 66 a3 3e 00 1f c3 be 8a 01 e8 09 00 [...&f.>.........] 000170 be b2 01 e8 03 00 fb eb fe ac 3c 00 74 09 b4 0e [............t...] 000180 bb 07 00 cd 10 eb f2 c3 25 00 46 65 68 6c 65 72 [........%.Fehler] 000190 20 62 65 69 6d 20 4c 65 73 65 6e 20 64 65 73 20 [ beim Lesen des ] 0001A0 44 61 74 65 6e 74 72 84 67 65 72 73 2e 0d 0a 00 [Datentr.gers....] 0001B0 31 00 53 79 73 74 65 6d 64 69 73 6b 65 74 74 65 [1.Systemdiskette] 0001C0 20 65 69 6e 6c 65 67 65 6e 20 75 6e 64 20 53 79 [ einlegen und Sy] 0001D0 73 74 65 6d 20 6e 65 75 20 73 74 61 72 74 65 6e [stem neu starten] 0001E0 2e 0d 0a 00 00 00 00 00 00 00 00 00 00 00 00 00 [................] 0001F0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 55 aa [..............U.]
[Edit]1.1.5 Patch developed by Robert Lalla based on a PBR with English messages text
Before the Patch [PgUp] 0 1 2 3 4 5 6 7 8 9 a b c d e f 000000 e9 8e 00 41 50 4a 26 57 4e 1f 00 00 02 00 1e 00 [...APJ&WN.......] 0001A0 72 72 65 64 2e 0d 0a 00 27 00 49 6e 73 65 72 74 [rred....`.Insert] 0001B0 20 61 20 73 79 73 74 65 6d 20 64 69 73 6b 65 74 [ a system disket] 0001C0 74 65 20 61 6e 64 20 72 65 73 74 61 72 74 2e 0d [te and restart..] 0001D0 0a 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [................] 0001E0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [................] 0001F0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 55 aa [..............U.] After the Patch 000000 e9 cb 01 41 50 4a 26 57 4e 1f 00 00 02 00 1e 00 [...APJ&WN.......] 0001A0 72 72 65 64 2e 0d 0a 00 23 00 49 6e 73 65 72 74 [rred....#.Insert] 0001B0 20 61 20 73 79 73 74 65 6d 20 64 69 73 6b 20 61 [ a system disk a] 0001C0 6e 64 20 72 65 73 74 61 72 74 2e 0d 0a 00 b4 41 [nd restart.....A] 0001D0 bb aa 55 cd 13 72 18 81 fb 55 aa 75 12 80 fc 21 [..U..r...U.u...!] 0001E0 72 0d f6 c1 01 74 08 66 b8 49 31 33 58 eb 02 33 [r....t.f.I13X..3] 0001F0 c0 68 00 30 0f a1 64 66 a3 00 00 e9 93 fe 55 aa [.h.0..df......U.] Code changed: 00000000 e9 cb01 JMP 0x1ce Code added: 000001ce b4 41 MOV AH, 0x41 000001d0 bb aa55 MOV BX, 0x55aa 000001d3 cd 13 INT 0x13 000001d5 72 18 JB 0x1ef 000001d7 81fb 55aa CMP BX, 0xaa55 000001db 75 12 JNZ 0x1ef 000001dd 80fc 21 CMP AH, 0x21 000001e0 72 0d JB 0x1ef 000001e2 f6c1 01 TEST CL, 0x1 000001e5 74 08 JZ 0x1ef 000001e7 66 b8 49313358 MOV EAX, 0x58333149 000001ed eb 02 JMP 0x1f1 000001ef 33c0 XOR AX, AX 000001f1 68 0030 PUSH 0x3000 000001f4 0fa1 POP FS 000001f6 64 66 a3 0000 MOV FS:[0x0], EAX 000001fb e9 93fe JMP 0x91
The message text of the 2. message
"Insert a system diskette and restart" is modified ( abbreviated ) to "Insert a system disk and restart"
to gain addresspace for the additional I13X code
Apply the code modification/extension via patch.exe
Patch.exe BMGR-PBR-I13X-Patch /A Contents of File BMGR-PBR-I13X-Patch:
FILE DFSibmgr.img
VER 0001 8E00
CHA 0001 CB01
VER 01A8 27
CHA 01A8 23
VER 01BE 6574
CHA 01BE 2061
VER 01C0 746520616E642072657374617274
CHA 01C0 6E6420726573746172742E0D0A00
VER 01CE 2E0D
CHA 01CE B441
VER 01D0 0A000000000000000000000000000000
CHA 01D0 BBAA55CD13721881FB55AA751280FC21
VER 01E0 00000000000000000000000000000000
CHA 01E0 720DF6C101740866B849313358EB0233
VER 01F0 000000000000000000000000000055aa
CHA 01F0 C06800300FA16466A30000E993FE55aa
[Edit]1.1.6 Adaption of Patch with implementation of messages codes for the PBR LVM 14.105 Code level English
Patch.exe BMGR-PBR-I13X-Patch /A Contents of File BMGR-PBR-I13X-Patch:
FILE BMGR_PBR_EN.IMG
VER 0001 8E00
CHA 0001 CB01
VER 0171 AA01
CHA 0171 9C01
VER 0188 1D0041206469736B
CHA 0188 0F005359532D424D
VER 0190 2072656164206572726F72206F636375
CHA 0190 47522D3030312E0D0A000F005359532D
VER 01A0 727265642E0D0A002700496E73657274
CHA 01A0 424D47522D3030322E0D0A0000000000
VER 01B0 20612073797374656D206469736B6574
CHA 01B0 00000000000000000000000000000000
VER 01C0 746520616E642072657374617274
CHA 01C0 0000000000000000000000000000
VER 01CE 2E0D
CHA 01CE B441
VER 01D0 0A000000000000000000000000000000
CHA 01D0 BBAA55CD13721881FB55AA751280FC21
VER 01E0 00000000000000000000000000000000
CHA 01E0 720DF6C101740866B849313358EB0233
VER 01F0 000000000000000000000000000055aa
CHA 01F0 C06800300FA16466A30000E993FE55aa
[Edit]1.1.7 Adaption of Patch with implementation of messages codes for the PBR LVM 14.105 Code level German
Patch.exe BMGR-PBR-I13X-Patch /A Contents of File BMGR-PBR-I13X-Patch:
FILE BMGR_PBR_GR.IMG
VER 0001 8E00
CHA 0001 CB01
VER 0171 B201
CHA 0171 9C01
VER 0188 25004665686c6572
CHA 0188 0F005359532D424D
VER 0190 206265696D204C6573656E2064657320
CHA 0190 47522D3030312E0D0A000F005359532D
VER 01A0 446174656E747284676572732E0D0A00
CHA 01A0 424D47522D3030322E0D0A0000000000
VER 01B0 310053797374656D6469736B65747465
CHA 01B0 00000000000000000000000000000000
VER 01C0 2065696E6C6567656E20756E6420
CHA 01C0 0000000000000000000000000000
VER 01CE 5379
CHA 01CE B441
VER 01D0 7374656D206E6575207374617274656E
CHA 01D0 BBAA55CD13721881FB55AA751280FC21
VER 01E0 2E0D0A00000000000000000000000000
CHA 01E0 720DF6C101740866B849313358EB0233
VER 01F0 000000000000000000000000000055aa
CHA 01F0 C06800300FA16466A30000E993FE55aa
[Edit]1.1.8 Documentation of the Test Results with the Patches
1. Implement the German patch on my T23 configuration with IBM OS/2 14.105 level MBR code.
After the patch the system works as before - the patch does not break anything
[Edit]1.2 Modification of BMGR code to add partitions from Partitioned Removable Media (PRM) to the selection menu
This modification/extension is required to boot from PRM
It is a prerequisite for booting from PRM via Filter driver.
See Design idea
see Chapter 7.4 Booting from Partitioned Removable Media ( PRM )
7.4.2 LVM Systems
ideas
4. Filter driver to change type of first removable device to fixed disk
developer with filter drive skill - daniatap.flt as model ?
Dies Modifikation ist erst erforderlich, wenn der Filter Treiber vorliegt.
Der Filter Treiber kann zunächst ohne BMGR Mod ausgetestet werden,
Das Boot von einer aktiven primary C: Partition von einem PRM kann ohne BMGR Unterstützung erfolgen.
Last changed: 24.03.2009 11:53 by Rainer D. Stroebel -
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