[Bug 500696] Re: Target FAT32 filesystem has fsck errors after install
Jan David Mol
500696 at bugs.launchpad.net
Thu Jul 21 10:02:19 UTC 2011
Bug still present on an up-to-date 11.04.
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https://bugs.launchpad.net/bugs/500696
Title:
Target FAT32 filesystem has fsck errors after install
Status in “usb-creator” package in Ubuntu:
Confirmed
Bug description:
Binary package hint: usb-creator
I am using usb-creator 0.2.12 from the Karmic LiveCD to install to a
USB thumbdrive.
I create a new FAT32 filesystem, check it with dosfsck(8), install the
live system on it, re-run dosfsck(8), and see errors. See below for
the step-by-step specifics:
root at ubuntu:~# mkdosfs -v -n usb-linux /dev/sdb2
mkdosfs 3.0.3 (18 May 2009)
Auto-selecting FAT32 for large filesystem
/dev/sdb2 has 124 heads and 62 sectors per track,
logical sector size is 512,
using 0xf8 media descriptor, with 1522224 sectors;
file system has 2 32-bit FATs and 8 sectors per cluster.
FAT size is 1484 sectors, and provides 189903 clusters.
Volume ID is eaf5bac9, volume label usb-linux.
root at ubuntu:~# fsck.msdos -n -v /dev/sdb2
dosfsck 3.0.3 (18 May 2009)
dosfsck 3.0.3, 18 May 2009, FAT32, LFN
Checking we can access the last sector of the filesystem
Boot sector contents:
System ID "mkdosfs"
Media byte 0xf8 (hard disk)
512 bytes per logical sector
4096 bytes per cluster
32 reserved sectors
First FAT starts at byte 16384 (sector 32)
2 FATs, 32 bit entries
759808 bytes per FAT (= 1484 sectors)
Root directory start at cluster 2 (arbitrary size)
Data area starts at byte 1536000 (sector 3000)
189903 data clusters (777842688 bytes)
62 sectors/track, 124 heads
0 hidden sectors
1522224 sectors total
Checking for unused clusters.
Checking free cluster summary.
/dev/sdb2: 1 files, 1/189903 clusters
(Do the usb-creator thing)
root at ubuntu:~# fsck.msdos -n -v /dev/sdb2
dosfsck 3.0.3 (18 May 2009)
dosfsck 3.0.3, 18 May 2009, FAT32, LFN
Checking we can access the last sector of the filesystem
There are differences between boot sector and its backup.
Differences: (offset:original/backup)
90:fa/0e, 91:fc/1f, 92:31/be, 93:c0/77, 94:8e/7c, 95:d0/ac, 96:bc/22
, 97:b4/c0, 98:7b/74, 99:06/0b, 100:57/56, 101:8e/b4, 102:c0/0e, 103:b9/bb
, 104:08/07, 106:bf/cd, 107:b4/10, 108:7b/5e, 109:f3/eb, 110:a5/f0
, 111:8e/32, 112:d8/e4, 113:bb/cd, 114:78/16, 115:00/cd, 116:0f/19
, 117:b4/eb, 118:37/fe, 119:0f/54, 120:a0/68, 121:56/69, 122:88/73
, 123:16/20, 124:31/69, 125:2c/73, 127:d2/6e, 128:78/6f, 129:15/74
, 130:b1/20, 131:06/61, 132:89/20, 133:3f/62, 134:89/6f, 135:47/6f
, 136:02/74, 137:f3/61, 138:64/62, 139:a5/6c, 140:8a/65, 141:0e/20
, 142:18/64, 143:7c/69, 144:88/73, 145:4d/6b, 146:f8/2e, 147:cd/20
, 148:13/20, 149:eb/50, 150:27/6c, 151:f6/65, 152:45/61, 153:f0/73
, 154:7f/65, 155:75/20, 156:08/69, 157:66/6e, 158:8b/73, 159:45/65
, 160:f8/72, 161:66/74, 162:a3/20, 163:1c/61, 164:7c/20, 165:b4/62
, 166:08/6f, 167:cd/6f, 168:13/74, 169:72/61, 170:13/62, 171:20/6c
, 172:e4/65, 173:75/20, 174:0f/66, 175:c1/6c, 176:ea/6f, 177:08/70
, 178:42/70, 179:89/79, 180:16/20, 181:1a/61, 182:7c/6e, 183:83/64
, 184:e1/0d, 185:3f/0a, 186:89/70, 187:0e/72, 188:18/65, 189:7c/73
, 190:fb/73, 191:bb/20, 192:aa/61, 193:55/6e, 194:b4/79, 195:41/20
, 196:8a/6b, 197:16/65, 198:31/79, 199:2c/20, 200:cd/74, 201:13/6f
, 202:72/20, 203:10/74, 204:81/72, 205:fb/79, 206:55/20, 207:aa/61
, 208:75/67, 209:0a/61, 210:f6/69, 211:c1/6e, 212:01/20, 213:74/2e
, 214:05/2e, 215:c6/2e, 216:06/20, 217:05/0d, 218:7d/0a, 220:66/00
, 221:a1/00, 222:f8/00, 223:7d/00, 224:bb/00, 226:7e/00, 227:e8/00
, 228:10/00, 230:66/00, 231:81/00, 232:3e/00, 233:2c/00, 234:7e/00
, 235:6b/00, 236:a2/00, 237:ce/00, 238:76/00, 239:0f/00, 240:85/00
, 241:c6/00, 243:e9/00, 244:42/00, 245:02/00, 246:bd/00, 247:01/00
, 249:66/00, 250:03/00, 251:06/00, 252:1c/00, 253:7c/00, 254:66/00
, 255:31/00, 256:d2/00, 257:e9/00, 260:eb/00, 261:4f/00, 262:55/00
, 263:e8/00, 264:d5/00, 266:66/00, 267:0f/00, 268:b7/00, 269:fd/00
, 270:b9/00, 271:10/00, 273:66/00, 274:52/00, 275:66/00, 276:50/00
, 277:06/00, 278:53/00, 279:57/00, 280:6a/00, 281:10/00, 282:89/00
, 283:e6/00, 284:66/00, 285:60/00, 286:8a/00, 287:16/00, 288:31/00
, 289:2c/00, 290:1e/00, 291:16/00, 292:1f/00, 293:b4/00, 294:42/00
, 295:cd/00, 296:13/00, 297:1f/00, 298:66/00, 299:61/00, 300:8d/00
, 301:64/00, 302:10/00, 303:72/00, 304:10/00, 305:5d/00, 306:66/00
, 307:01/00, 308:f8/00, 309:29/00, 310:fd/00, 311:c1/00, 312:e7/00
, 313:09/00, 314:01/00, 315:fb/00, 316:21/00, 317:ed/00, 318:75/00
, 319:c6/00, 320:c3/00, 321:66/00, 322:60/00, 323:31/00, 324:c0/00
, 325:8a/00, 326:16/00, 327:31/00, 328:2c/00, 329:cd/00, 330:13/00
, 331:66/00, 332:61/00, 333:e2/00, 334:c2/00, 335:c6/00, 336:06/00
, 337:05/00, 338:7d/00, 339:4f/00, 340:5d/00, 341:66/00, 342:52/00
, 343:66/00, 344:50/00, 345:55/00, 346:53/00, 347:66/00, 348:0f/00
, 349:b7/00, 350:36/00, 351:18/00, 352:7c/00, 353:66/00, 354:0f/00
, 355:b7/00, 356:3e/00, 357:1a/00, 358:7c/00, 359:66/00, 360:f7/00
, 361:f6/00, 362:31/00, 363:c9/00, 364:87/00, 365:ca/00, 366:66/00
, 367:f7/00, 368:f7/00, 369:e8/00, 370:6b/00, 372:29/00, 373:ce/00
, 374:39/00, 375:f5/00, 376:76/00, 377:02/00, 378:89/00, 379:f5/00
, 380:c0/00, 381:e4/00, 382:06/00, 383:41/00, 384:08/00, 385:e1/00
, 386:88/00, 387:c5/00, 388:88/00, 389:d6/00, 390:8a/00, 391:16/00
, 392:31/00, 393:2c/00, 394:95/00, 395:b4/00, 396:02/00, 397:bd/00
, 398:10/00, 400:66/00, 401:60/00, 402:cd/00, 403:13/00, 404:66/00
, 405:61/00, 406:72/00, 407:17/00, 408:66/00, 409:0f/00, 410:b6/00
, 411:c8/00, 412:c1/00, 413:e0/00, 414:09/00, 415:5b/00, 416:01/00
, 417:c3/00, 418:5d/00, 419:66/00, 420:58/00, 421:66/00, 422:5a/00
, 423:66/00, 424:01/00, 425:c8/00, 426:29/00, 427:cd/00, 428:75/00
, 429:a7/00, 430:c3/00, 431:4d/00, 432:75/00, 433:de/00, 434:95/00
, 435:d1/00, 436:2e/00, 437:fc/00, 438:7d/00, 439:75/00, 440:df/00
, 441:31/00, 442:f6/00, 443:8e/00, 444:d6/00, 445:bc/00, 446:b0/00
, 447:7b/00, 448:8e/00, 449:de/00, 450:66/00, 451:8f/00, 452:06/00
, 453:78/00, 455:be/00, 456:ea/00, 457:7d/00, 458:ac/00, 459:20/00
, 460:c0/00, 461:74/00, 462:09/00, 463:b4/00, 464:0e/00, 465:bb/00
, 466:07/00, 468:cd/00, 469:10/00, 470:eb/00, 471:f2/00, 472:98/00
, 473:cd/00, 474:16/00, 475:cd/00, 476:19/00, 477:eb/00, 478:fe/00
, 479:3b/00, 480:2e/00, 481:fc/00, 482:7d/00, 483:76/00, 484:04/00
, 485:8b/00, 486:2e/00, 487:fc/00, 488:7d/00, 489:c3/00, 490:42/00
, 491:6f/00, 492:6f/00, 493:74/00, 494:20/00, 495:65/00, 496:72/00
, 497:72/00, 498:6f/00, 499:72/00, 500:0d/00, 501:0a/00, 504:c0/00
, 505:0b/00, 508:7f/00
Not automatically fixing this.
Boot sector contents:
System ID "mkdosfs"
Media byte 0xf8 (hard disk)
512 bytes per logical sector
4096 bytes per cluster
32 reserved sectors
First FAT starts at byte 16384 (sector 32)
2 FATs, 32 bit entries
759808 bytes per FAT (= 1484 sectors)
Root directory start at cluster 2 (arbitrary size)
Data area starts at byte 1536000 (sector 3000)
189903 data clusters (777842688 bytes)
62 sectors/track, 124 heads
0 hidden sectors
1522224 sectors total
Checking for unused clusters.
Checking free cluster summary.
Free cluster summary wrong (13325 vs. really 13321)
Auto-correcting.
Leaving file system unchanged.
/dev/sdb2: 207 files, 176582/189903 clusters
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