1 ; **************************************************************************** 2 ; bssave.s (BSSAVE.COM) - TRDOS 386 Harddisk Boot Sector Saving/Backup Utility 3 ; (for MSDOS/WINDOWS) 4 ; **************************************************************************** 5 ; Last Update: 10/10/2020 6 ; ---------------------------------------------------------------------------- 7 ; Beginning: 28/09/2020 8 ; ---------------------------------------------------------------------------- 9 ; Assembler: NASM version 2.15 10 ; ---------------------------------------------------------------------------- 11 ; Turkish Rational DOS 12 ; Operating System Project v2.0 by ERDOGAN TAN (Beginning: 04/01/2016) 13 ; ---------------------------------------------------------------------------- 14 ; Purpose: To save previous boot sector of a primary dos partition 15 ; just before using TRHDBOOT.COM or HDFORMAT.COM utilities. 16 ; (Masterboot sector and boot sector will be saved; then, 17 ; the boot sector can be restored via BSRESTOR.COM if necessary.) 18 ; **************************************************************************** 19 ; nasm bssave.s -l bssave.lst -o BSSAVE.COM 20 21 ; DTA (PSP+80h= Offset 128) 22 DTA_Attrib equ 149 ; PDP+21 23 DTA_Time equ 150 ; PSP+22 24 DTA_Date equ 152 ; PSP 24 25 DTA_FileSize equ 154 ; PSP + 26 26 DTA_FileName equ 158 ; PSP + 30 27 28 ; Masterboot / Partition Table at Beginning+1BEh 29 ptBootable equ 0 30 ptBeginHead equ 1 31 ptBeginSector equ 2 32 ptBeginCylinder equ 3 33 ptFileSystemID equ 4 34 ptEndHead equ 5 35 ptEndSector equ 6 36 ptEndCylinder equ 7 37 ptStartSector equ 8 38 ptSectors equ 12 39 40 ; BIOS INT 13h Extensions (LBA extensions) 41 ; Just After DP Data (DPDiskNumber+) 42 DAP_PacketSize equ 10h ; If extensions present, this byte will be >=10h 43 DAP_Reserved1 equ 11h ; Reserved Byte 44 DAP_NumOfBlocks equ 12h ; Value of this byte must be 0 to 127 45 DAP_Reserved2 equ 13h ; Reserved Byte 46 DAP_Destination equ 14h ; Address of Transfer Buffer as SEGMENT:OFFSET 47 DAP_LBA_Address equ 18h ; LBA=(C1*H0+H1)*S0+S1-1 48 ; C1= Selected Cylinder Number 49 ; H0= Number Of Heads (Maximum Head Number + 1) 50 ; H1= Selected Head Number 51 ; S0= Maximum Sector Number 52 ; S1= Selected Sector Number 53 ; QUAD WORD 54 ; DAP_Flat_Destination equ 20h ; 64 bit address, if value in 4h is FFFF:FFFFh 55 ; QUAD WORD (Also, value in 0h must be 18h) 56 ; TR-DOS will not use 64 bit Flat Address 57 58 pTableOffset equ 1BEh ; 446 59 60 [BITS 16] 61 [ORG 100h] 62 63 ;;cli 64 ;;cld 65 ;;push cs 66 ;;pop ss 67 ;;mov sp, 0FFFEh 68 ;;sti 69 ; 70 ;;mov bx, SizeOfFile+100 71 ; 72 ;mov bx, bss_end 73 ; 74 ;add bx, 15 75 ;shr bx, 1 76 ;shr bx, 1 77 ;shr bx, 1 78 ;shr bx, 1 79 ;mov ah, 4Ah ; modify memory allocation 80 ;;push cs 81 ;;pop es 82 ;int 21h 83 84 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 85 ; clear BSS 86 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 87 88 ;mov cx, bss_clear_end 89 ; 90 ;mov di, bss_start 91 ;sub cx, di 92 ;;inc cx 93 ;shr cx, 1 94 ;xor ax, ax 95 ;rep stosw 96 97 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 98 ; get command arguments (command tail) 99 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 100 101 00000000 BE8000 mov si, 80h ; PSP command tail 102 00000003 AC lodsb 103 00000004 08C0 or al, al ; command tail length 104 00000006 7421 jz short _03 ; jump if zero 105 _01: 106 00000008 AC lodsb 107 00000009 3C20 cmp al, ' ' ; is it SPACE ? 108 0000000B 74FB je short _01 109 0000000D 721A jb short _03 110 111 ; check disk name 112 113 0000000F 3C68 cmp al, 'h' 114 00000011 7516 jne short _03 115 00000013 803C64 cmp byte [si], 'd' 116 00000016 7511 jne short _03 117 00000018 46 inc si 118 00000019 AC lodsb 119 0000001A 3C30 cmp al, '0' 120 0000001C 7406 je short _02 121 0000001E 7209 jb short _03 122 00000020 3C33 cmp al, '3' 123 00000022 7705 ja short _03 124 _02: 125 00000024 803C20 cmp byte [si], ' ' 126 00000027 7409 je short _04 127 _03: 128 00000029 BE[3502] mov si, TrDOS_Welcome 129 0000002C E8F601 call print_msg 130 131 0000002F E97001 jmp _33 132 _04: 133 00000032 46 inc si 134 00000033 0450 add al, 80h - '0' 135 00000035 A2[3302] mov [DrvNum], al ; 80h .. 83h 136 _05: 137 00000038 AC lodsb 138 00000039 3C20 cmp al, ' ' 139 0000003B 74FB je short _05 140 0000003D 72EA jb short _03 141 142 ; check backup file name 143 _06: 144 0000003F BF[3605] mov di, bs_file_name 145 00000042 AA stosb 146 _07: 147 00000043 AC lodsb 148 ;cmp al, 0Dh ; ENTER (CR) key 149 00000044 3C20 cmp al, 20h ; ' ' 150 00000046 760C jna short _08 151 00000048 AA stosb 152 00000049 81FF[4205] cmp di, bs_file_name + 12 153 0000004D 72F4 jb short _07 154 0000004F 803C20 cmp byte [si], 20h 155 00000052 7742 ja short _14 156 _08: 157 00000054 28C0 sub al, al 158 00000056 AA stosb 159 160 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 161 ; File name capitalization 162 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 163 164 00000057 BE[3605] mov si, bs_file_name 165 0000005A 89F7 mov di, si 166 0000005C 89F3 mov bx, si 167 _09: 168 0000005E AC lodsb 169 0000005F 3C61 cmp al, 'a' 170 00000061 730D jnb short _11 171 00000063 20C0 and al, al 172 00000065 7412 jz short _12 173 00000067 3C2E cmp al, '.' 174 00000069 7502 jne short _10 175 0000006B 89FB mov bx, di ; dot position 176 _10: 177 0000006D AA stosb 178 0000006E EBEE jmp short _09 179 _11: 180 00000070 3C7A cmp al, 'z' 181 00000072 77F9 ja short _10 182 00000074 24DF and al, 0DFh ; NOT 32 183 00000076 AA stosb 184 00000077 EBE5 jmp short _09 185 _12: 186 00000079 8805 mov [di], al 187 0000007B 4F dec di 188 0000007C 39FB cmp bx, di 189 0000007E 7316 jnb short _14 190 00000080 29DF sub di, bx 191 00000082 81EB[3605] sub bx, bs_file_name 192 00000086 83FF03 cmp di, 3 193 00000089 7606 jna short _13 194 0000008B 21DB and bx, bx 195 0000008D 7507 jnz short _14 196 0000008F EB0E jmp short _15 197 _13: 198 00000091 83FB08 cmp bx, 8 199 00000094 7609 jna short _15 200 _14: 201 00000096 BE[CA03] mov si, msg_inv_file_name 202 00000099 E88901 call print_msg 203 0000009C E90301 jmp _33 204 205 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 206 ; Find boot sector backup file 207 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 208 209 _15: 210 0000009F BA[3605] mov dx, bs_file_name 211 000000A2 B93F00 mov cx, 3Fh ; File Attributes 212 000000A5 B44E mov ah, 4Eh ; MS-DOS Function = Find First File 213 000000A7 CD21 int 21h 214 000000A9 7261 jc short _20 215 216 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 217 ; Check bs backup file features 218 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 219 220 000000AB BE9500 mov si, DTA_Attrib 221 000000AE 8A04 mov al, [si] 222 000000B0 241F and al, 1Fh ; directory, volume label, system, hidden, read only 223 000000B2 753D jnz short _17 224 000000B4 BE9A00 mov si, DTA_FileSize 225 000000B7 AD lodsw 226 000000B8 8B14 mov dx, [si] 227 000000BA 09C2 or dx, ax 228 000000BC 744E jz short _20 ; zero file size (do not display owr question) 229 230 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 231 ; Display file overwrite question and get the answer (Y/N/ESC) 232 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 233 234 000000BE BE[5304] mov si, msg_overwrite_question1 235 000000C1 E86101 call print_msg 236 237 000000C4 BE[3605] mov si, bs_file_name 238 000000C7 E85B01 call print_msg 239 240 000000CA BE[7004] mov si, msg_overwrite_question2 241 000000CD E85501 call print_msg 242 243 _16: 244 000000D0 31C0 xor ax, ax 245 000000D2 CD16 int 16h ; wait for keyboard command 246 000000D4 3C79 cmp al, 'y' 247 000000D6 7428 je short _19 ; retry 248 000000D8 3C59 cmp al, 'Y' 249 000000DA 7424 je short _19 250 000000DC 3C6E cmp al, 'n' 251 000000DE 7417 je short _18 ; exit 252 000000E0 3C4E cmp al, 'N' 253 000000E2 7413 je short _18 254 000000E4 3C03 cmp al, 'C'-40h 255 000000E6 0F84B800 je _33 256 000000EA 3C1B cmp al, 27 257 000000EC 75E2 jne short _16 258 000000EE E9B100 jmp _33 259 260 ; invalid backup file ! 261 _17: 262 000000F1 BE[F904] mov si, msg_inv_backup_file 263 000000F4 E9F300 jmp _37 264 _18: 265 000000F7 BE[7E04] mov si, _NO 266 000000FA E82801 call print_msg 267 000000FD E9A200 jmp _33 268 _19: 269 00000100 BE[7A04] mov si, _YES 270 00000103 E81F01 call print_msg 271 272 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 273 ; Next line 274 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 275 276 00000106 BE[9904] mov si, CRLF 277 00000109 E81901 call print_msg 278 279 _20: 280 281 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 282 ; Read masterboot sector (MBR) 283 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 284 285 0000010C BF0500 mov di, 5 286 287 ;mov ax, 0201h ; read disk 288 0000010F BB[4405] mov bx, MasterBootBuff ; location of masterboot code 289 290 00000112 B90100 mov cx, 1 ; cylinder = 0 291 ; sector = 1 292 00000115 B600 mov dh, 0 ; head = 0 293 00000117 8A16[3302] mov dl, [DrvNum] ; drive number, 80h .. 83h 294 _21: 295 0000011B B80102 mov ax, 0201h 296 0000011E CD13 int 13h 297 00000120 730D jnc short _22 ; read masterboot sector, OK 298 299 ; reset hard disk(s) 300 00000122 30E4 xor ah, ah 301 ;mov dl, [drv] 302 00000124 CD13 int 13h 303 304 ;dec byte [RetryCount] 305 00000126 4F dec di 306 00000127 75F2 jnz short _21 307 308 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 309 ; write disk error message and terminate 310 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 311 312 00000129 BE[CF04] mov si, msg_disk_not_ready_error 313 0000012C E9BB00 jmp _37 314 315 _22: 316 317 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 318 ; Check MBR then read MBR & BS 319 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 320 321 0000012F 813E[4207]55AA cmp word [MBIDCode], 0AA55h 322 00000135 7406 je short _23 ; Valid MBR 323 324 ; invalid MBR ! 325 326 00000137 BE[4004] mov si, msg_inv_mbr 327 0000013A E9AD00 jmp _37 328 329 _23: 330 ; check if MBR contains primary DOS partition or not 331 332 0000013D BE[0207] mov si, MasterBootBuff+pTableOffset 333 _24: 334 00000140 8A4404 mov al, [si+ptFileSystemID] 335 ;xor ah, ah ; LBA = 0 336 00000143 3C0B cmp al, 0Bh ; FAT32 CHS 337 00000145 721C jb short _27 338 00000147 7413 je short _26 339 ;inc ah ; LBA = 1 340 00000149 3C0C cmp al, 0Ch ; FAT32 LBA 341 0000014B 740F je short _26 342 0000014D 3C0E cmp al, 0Eh ; FAT16 LBA 343 0000014F 7427 je short _29 344 _25: 345 00000151 81FE[4207] cmp si, MasterBootBuff+pTableOffset+64 346 00000155 731C jnb short _28 347 00000157 83C610 add si, 16 348 0000015A EBE4 jmp short _24 349 _26: 350 0000015C C606[3402]01 mov byte [fat32], 1 351 00000161 EB15 jmp short _29 352 _27: 353 00000163 3C06 cmp al, 06h ; FAT16 CHS big 354 00000165 77EA ja short _25 355 00000167 740F je short _29 356 00000169 3C04 cmp al, 04h ; FAT16 CHS 357 0000016B 740B je short _29 358 0000016D 3C01 cmp al, 01h ; FAT12 359 0000016F 75E0 jne short _25 360 00000171 EB05 jmp short _29 361 _28: 362 ; MBR does not contain primary DOS partition 363 00000173 BE[0C04] mov si, msg_dosp_notfound 364 00000176 EB72 jmp short _37 365 _29: 366 00000178 8B4408 mov ax, [si+ptStartSector] 367 0000017B 8B540A mov dx, [si+ptStartSector+2] 368 0000017E BB[4407] mov bx, BootSectorBuff 369 _30: 370 00000181 E87500 call lba_read 371 00000184 7305 jnc short _32 372 _31: 373 00000186 BE[CF04] mov si, msg_disk_not_ready_error 374 00000189 EB5F jmp short _37 375 _32: 376 0000018B 803E[3402]01 cmp byte [fat32], 1 377 00000190 7515 jne short _34 378 00000192 83C002 add ax, 2 ; Second part of 1024 bytes boot sector 379 00000195 83D200 adc dx, 0 ; just after FSINFO sector 380 00000198 BB[4409] mov bx, BootSectorBuff+512 381 0000019B C606[3402]02 mov byte [fat32], 2 382 000001A0 EBDF jmp short _30 383 384 _33: 385 000001A2 BE[9904] mov si, CRLF 386 000001A5 EB43 jmp short _37 387 388 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 389 ; Create new file or overwrite/truncate existing file 390 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 391 392 _34: 393 000001A7 31C9 xor cx, cx ; 0 ; Regular file with write permission 394 000001A9 BA[3605] mov dx, bs_file_name 395 000001AC B8003C mov ax, 3C00h ; create a file 396 000001AF CD21 int 21h 397 000001B1 7241 jc short _39 398 399 ;mov [bs_file_handle], ax 400 000001B3 89C1 mov cx, ax 401 402 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 403 ; Writing MBR and BS to the backup file 404 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 405 406 000001B5 BE[8104] mov si, msg_writing_file 407 000001B8 E86A00 call print_msg 408 409 ;mov bx, [bs_file_handle] 410 000001BB 89CB mov bx, cx 411 000001BD B90004 mov cx, 1024 ; Write MBR and BS (BS Part 1) 412 000001C0 BA[4405] mov dx, MasterBootBuff 413 000001C3 B440 mov ah, 40h ; write to file 414 000001C5 CD21 int 21h 415 000001C7 7216 jc short _36 416 000001C9 803E[3402]00 cmp byte [fat32], 0 417 000001CE 760C jna short _35 418 000001D0 B90002 mov cx, 512 ; Write FAT32 BS (BS Part 2) 419 000001D3 BA[4409] mov dx, MasterBootBuff+1024 420 000001D6 B440 mov ah, 40h ; write to file 421 000001D8 CD21 int 21h 422 000001DA 7203 jc short _36 423 _35: 424 000001DC BE[9504] mov si, msg_OK 425 ;jmp short _37 426 _36: 427 000001DF 9C pushf 428 000001E0 B43E mov ah, 3Eh ; close file 429 ;mov bx, [bs_file_handle] 430 000001E2 CD21 int 21h 431 000001E4 9D popf 432 000001E5 7303 jnc short _37 433 434 ; Boot sector backup file writing error ! 435 000001E7 BE[B604] mov si, msg_file_write_error 436 _37: 437 000001EA E83800 call print_msg 438 439 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 440 ; Exit 441 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 442 443 000001ED B8004C mov ax, 4C00h ; terminate 444 000001F0 CD21 int 21h 445 _38: 446 000001F2 EBFE jmp short _38 447 _39: 448 000001F4 BE[9C04] mov si, msg_file_create_error 449 000001F7 EBF1 jmp short _37 450 451 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 452 ; LBA read (read one sector) 453 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 454 455 lba_read: 456 000001F9 BF0500 mov di, 5 457 lba_read_1: 458 ;pusha ; db 60h 459 000001FC 60 db 60h 460 ;push 0 ; db 6Ah, 00h 461 000001FD 6A00 db 6Ah, 0 462 ;push 0 ; db 6Ah, 00h 463 000001FF 6A00 db 6Ah, 0 464 00000201 52 push dx 465 00000202 50 push ax 466 00000203 06 push es 467 00000204 53 push bx 468 ;push 1 ; db 6Ah, 01h 469 00000205 6A01 db 6Ah, 01h 470 ;push 10h ; db 6Ah, 10h 471 00000207 6A10 db 6Ah, 10h 472 473 00000209 89E6 mov si, sp 474 0000020B 8A16[3302] mov dl, [DrvNum] 475 ;xor al, al ; verify off 476 lba_read_2: 477 0000020F B442 mov ah, 42h ; LBA read 478 ;;xor al, al ; verify off 479 00000211 CD13 int 13h 480 481 ;mov [error], ah 482 00000213 730D jnc short lba_read_3 483 484 00000215 4F dec di 485 00000216 740A jz short lba_read_3 486 487 00000218 30E4 xor ah, ah 488 ;mov dl, [DrvNum] 489 0000021A CD13 int 13h ; BIOS Service func (ah) = 0 490 ; Reset disk system 491 492 ;mov word [si+2], 1 ; set r/w count to 1 again 493 0000021C C6440201 mov byte [si+2], 1 494 495 00000220 EBED jmp short lba_read_2 496 497 lba_read_3: 498 ;popa 499 00000222 61 db 61h 500 ;popa 501 00000223 61 db 61h 502 503 _retn: 504 00000224 C3 retn 505 506 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 507 ; print message 508 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 509 510 print_msg: 511 00000225 AC lodsb ; Load byte at DS:SI to AL 512 00000226 20C0 and al, al 513 00000228 74FA jz short _retn 514 0000022A B40E mov ah, 0Eh 515 0000022C BB0700 mov bx, 07h 516 0000022F CD10 int 10h ; BIOS Service func ( ah ) = 0Eh 517 ; Write char as TTY 518 ; AL-char BH-page BL-color 519 00000231 EBF2 jmp short print_msg 520 521 ;============================================================================= 522 ; initialized data 523 ;============================================================================= 524 525 DrvNum: 526 00000233 00 db 0 527 fat32: 528 00000234 00 db 0 529 530 ;align 2 531 532 ;bs_file_handle: 533 ; dw 0 534 535 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 536 ; Messages 537 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 538 539 TrDOS_Welcome: 540 00000235 0D0A db 0Dh, 0Ah 541 00000237 5072696D6172792044- db "Primary DOS Partition Boot Sector Backup Utility for TR-DOS 386" 541 00000240 4F5320506172746974- 541 00000249 696F6E20426F6F7420- 541 00000252 536563746F72204261- 541 0000025B 636B7570205574696C- 541 00000264 69747920666F722054- 541 0000026D 522D444F5320333836 542 00000276 0D0A db 0Dh, 0Ah 543 00000278 76312E302E31303130- db "v1.0.101020 (c) Erdogan TAN 2020" 543 00000281 323020286329204572- 543 0000028A 646F67616E2054414E- 543 00000293 2032303230 544 00000298 0D0A db 0Dh, 0Ah 545 0000029A 0D0A db 0Dh, 0Ah 546 0000029C 55736167653A206273- db "Usage: bssave " 546 000002A5 73617665203C646973- 546 000002AE 6B206472697665206E- 546 000002B7 616D653E203C626163- 546 000002C0 6B75702066696C6520- 546 000002C9 6E616D653E 547 000002CE 0D0A db 0Dh, 0Ah 548 000002D0 0D0A db 0Dh, 0Ah 549 000002D2 4469736B2064726976- db "Disk drive names: " 549 000002DB 65206E616D65733A20 550 000002E4 0D0A db 0Dh, 0Ah 551 000002E6 0D0A db 0Dh, 0Ah 552 000002E8 20686430202E2E666F- db " hd0 ..for primary dos partition on 1st disk " 552 000002F1 72207072696D617279- 552 000002FA 20646F732070617274- 552 00000303 6974696F6E206F6E20- 552 0000030C 317374206469736B20 553 00000315 0D0A db 0Dh, 0Ah 554 00000317 20686431202E2E666F- db " hd1 ..for primary dos partition on 2nd disk " 554 00000320 72207072696D617279- 554 00000329 20646F732070617274- 554 00000332 6974696F6E206F6E20- 554 0000033B 326E64206469736B20 555 00000344 0D0A db 0Dh, 0Ah 556 00000346 20686432202E2E666F- db " hd2 ..for primary dos partition on 3rd disk " 556 0000034F 72207072696D617279- 556 00000358 20646F732070617274- 556 00000361 6974696F6E206F6E20- 556 0000036A 337264206469736B20 557 00000373 0D0A db 0Dh, 0Ah 558 00000375 20686433202E2E666F- db " hd3 ..for primary dos partition on 4th disk " 558 0000037E 72207072696D617279- 558 00000387 20646F732070617274- 558 00000390 6974696F6E206F6E20- 558 00000399 347468206469736B20 559 000003A2 0D0A0D0A db 0Dh, 0Ah, 0Dh, 0Ah 560 000003A6 4578616D706C653A20- db "Example: bssave hd0 bsbackup.bin " 560 000003AF 627373617665206864- 560 000003B8 302062736261636B75- 560 000003C1 702E62696E20 561 000003C7 0D0A00 db 0Dh, 0Ah, 0 562 563 msg_inv_file_name: 564 000003CA 0D0A db 0Dh, 0Ah 565 000003CC 496E76616C69642066- db "Invalid file name !", 0Dh, 0Ah 565 000003D5 696C65206E616D6520- 565 000003DE 210D0A 566 000003E1 2846696C65206E616D- db "(File name must fit to 8.3 DOS format) !" 566 000003EA 65206D757374206669- 566 000003F3 7420746F20382E3320- 566 000003FC 444F5320666F726D61- 566 00000405 74292021 567 00000409 0D0A00 db 0Dh, 0Ah, 0 568 569 msg_dosp_notfound: 570 0000040C 0D0A db 0Dh, 0Ah 571 0000040E 4D425220646F657320- db 'MBR does not contain a primary DOS partition ! ' 571 00000417 6E6F7420636F6E7461- 571 00000420 696E2061207072696D- 571 00000429 61727920444F532070- 571 00000432 6172746974696F6E20- 571 0000043B 2120 572 0000043D 0D0A db 0Dh, 0Ah 573 0000043F 00 db 0 574 575 msg_inv_mbr: 576 00000440 0D0A db 0Dh, 0Ah 577 00000442 496E76616C6964204D- db 'Invalid MBR ! ' 577 0000044B 4252202120 578 00000450 0D0A00 db 0Dh, 0Ah, 0 579 580 msg_overwrite_question1: 581 00000453 0D0A db 0Dh, 0Ah 582 00000455 446F20796F75207761- db 'Do you want to overwrite ' 582 0000045E 6E7420746F206F7665- 582 00000467 72777269746520 583 0000046E 27 db 27h 584 0000046F 00 db 0 585 586 msg_overwrite_question2: 587 00000470 27 db 27h 588 00000471 2066696C65203F20 db ' file ? ' 589 00000479 00 db 0 590 591 0000047A 594553 _YES: db 'YES' 592 ;db 0Dh, 0Ah, 0 593 0000047D 00 db 0 594 595 0000047E 4E4F _NO: db 'NO' 596 ;db 0Dh, 0Ah, 0 597 00000480 00 db 0 598 599 msg_writing_file: 600 00000481 0D0A db 0Dh, 0Ah 601 00000483 57726974696E672066- db 'Writing file ... ' 601 0000048C 696C65202E2E2E20 602 00000494 00 db 0 603 msg_OK: 604 00000495 204F4B2E db ' OK.' 605 CRLF: 606 00000499 0D0A00 db 0Dh, 0Ah, 0 607 608 msg_file_create_error: 609 0000049C 0D0A db 0Dh, 0Ah 610 0000049E 46696C652063726561- db "File creating error !" 610 000004A7 74696E67206572726F- 610 000004B0 722021 611 000004B3 0D0A00 db 0Dh, 0Ah, 0 612 613 msg_file_write_error: 614 000004B6 0D0A db 0dh, 0Ah 615 000004B8 46696C652077726974- db "File writing error !" 615 000004C1 696E67206572726F72- 615 000004CA 2021 616 000004CC 0D0A00 db 0Dh, 0Ah, 0 617 618 msg_disk_not_ready_error: 619 000004CF 0D0A db 0Dh, 0Ah 620 000004D1 4469736B2072656164- db "Disk read error or drive not ready ! " 620 000004DA 206572726F72206F72- 620 000004E3 206472697665206E6F- 620 000004EC 742072656164792021- 620 000004F5 20 621 000004F6 0D0A00 db 0Dh, 0Ah, 0 622 623 msg_inv_backup_file: 624 000004F9 0D0A db 0Dh, 0Ah 625 000004FB 496E76616C69642062- db "Invalid backup file name !", 0Dh, 0Ah 625 00000504 61636B75702066696C- 625 0000050D 65206E616D6520210D- 625 00000516 0A 626 00000517 28496D70726F706572- db "(Improper file attributes) !" 626 00000520 2066696C6520617474- 626 00000529 726962757465732920- 626 00000532 21 627 00000533 0D0A00 db 0Dh, 0Ah, 0 628 629 SizeOfFile equ $-100 630 631 ;============================================================================= 632 ; uninitialized data 633 ;============================================================================= 634 635 bss_start: 636 637 ABSOLUTE bss_start 638 639 alignb 2 640 641 bs_file_name: 642 00000536 resb 13 643 00000543 ?? resb 1 ; word alignment 644 645 bss_clear_end: 646 647 ;alignb 2 648 649 ; Masterboot sector (MBR) 650 651 MasterBootBuff: 652 MasterBootCode: 653 00000544 resb 446 654 PartitionTable: 655 00000702 resb 64 656 MBIDCode: 657 00000742 ???? resw 1 658 659 BootSectorBuff: 660 00000744 resb 512 661 BootSectorBuff2: 662 00000944 resb 512 ; FAT32 fs boot sector buffer, 2nd part 663 664 bss_end: