11641 spelling mistakes in section 7d of the manual
1 '\" te 2 .\" Copyright (c) 2009 Sun Microsystems, Inc. All Rights Reserved. 3 .\" The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License. You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing. 4 .\" See the License for the specific language governing permissions and limitations under the License. When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, 5 .\" with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner] 6 .TH SD 7D "Jan 10, 2020" 7 .SH NAME 8 sd \- SCSI disk and ATAPI/SCSI CD-ROM device driver 9 .SH SYNOPSIS 10 .nf 11 \fBsd@target,lun:partition\fR 12 .fi 13 14 .SH DESCRIPTION 15 To open a device without checking if the vtoc is valid, use the O_NDELAY flag. 16 When the device is opened using O_NDELAY, the first read or write to the device 17 that happens after the open results in the label being read if the label is not 18 currently valid. Once read, the label remains valid until the last close of the 19 device. Except for reading the label, O_NDELAY has no impact on the driver. 20 .SS "SPARC" 21 The \fBsd\fR \fBSCSI\fR and \fBSCSI/ATAPI\fR driver supports embedded 22 \fBSCSI\fR-2 and \fBCCS\fR-compatible \fBSCSI\fR disk and CD-ROM drives, 23 \fBATAPI \fR 2.6 (SFF-8020i)-compliant CD-ROM drives, SFF-8090-compliant 24 \fBSCSI/ATAPI\fR DVD-ROM drives, IOMEGA \fBSCSI/ATAPI\fR ZIP drives, \fBSCSI 25 JAZ\fR drives, and USB mass storage devices (refer to \fBscsa2usb\fR(7D)). 26 .sp 27 .LP 28 To determine the disk drive type, use the \fBSCSI/ATAPI\fR inquiry command and 29 read the volume label stored on block 0 of the drive. (The volume label 30 describes the disk geometry and partitioning and must be present for the disk 31 to be mounted by the system.) A volume label is not required for removable, 32 re-writable or read-only media. 33 .SS "x86 Only" 34 The \fBsd\fR driver supports embedded \fBSCSI\fR-2 and \fBCCS\fR-compatible 35 \fBSCSI \fRdisk and CD-ROM drives, \fBATAPI \fR2.6 (SFF-8020i)-compliant CD-ROM 36 drives, SFF-8090-compliant \fBSCSI/ATAPI\fR DVD-ROM drives, IOMEGA 37 \fBSCSI/ATAPI\fR ZIP drives\fB, and SCSI JAZ\fR drives. 38 .sp 39 .LP 40 The x86 BIOS legacy requires a master boot record (MBR) and \fBfdisk\fR table 41 in the first physical sector of the bootable media. If the x86 hard disk 42 contains a Solaris disk label, it is located in the second 512-byte sector of 43 the FDISK partition. 44 .SH DEVICE SPECIAL FILES 45 Block-files access the disk using normal buffering mechanism and are read-from 46 and written-to without regard to physical disk records. A \fBraw\fR interface 47 enables direct transmission between the disk and the user's read or write 48 buffer. A single \fBread\fR or \fBwrite\fR call usually results in a single I/O 49 operation, therefore raw I/O is more efficient when many bytes are transmitted. 50 Block files names are found in \fB/dev/dsk\fR; raw file names are found in 51 \fB/dev/rdsk\fR. 52 .sp 53 .LP 54 I/O requests to the raw device must be aligned on a 512-byte (\fBDEV_BSIZE\fR) 55 boundary and all I/O request lengths must be in multiples of 512 bytes. 56 Requests that do not meet these requirements will trigger an \fBEINVAL\fR 57 error. There are no alignment or length restrictions on I/O requests to the 58 block device. 59 .SH CD-ROM DRIVE SUPPORT 60 A CD-ROM disk is single-sided and contains approximately 640 megabytes of data 61 or 74 minutes of audio. When the CD-ROM is opened, the eject button is disabled 62 to prevent manual removal of the disk until the last \fBclose()\fR is called. 63 No volume label is required for a CD-ROM. The disk geometry and partitioning 64 information are constant and never change. If the CD-ROM contains data recorded 65 in a Solaris-aware file system format, it can be mounted using the appropriate 66 Solaris file system support. 67 .SH DVD-ROM DRIVE SUPPORT 68 DVD-ROM media can be single or double-sided and can be recorded upon using a 69 single or double layer structure. Double-layer media provides parallel or 70 opposite track paths. A DVD-ROM can hold from between 4.5 Gbytes and 17 Gbytes 71 of data, depending on the layer structure used for recording and if the DVD-ROM 72 is single or double-sided. 73 .sp 74 .LP 75 When the DVD-ROM is opened, the eject button is disabled to prevent the manual 76 removal of a disk until the last \fBclose()\fR is called. No volume label is 77 required for a DVD-ROM. If the DVD-ROM contains data recorded in a 78 Solaris-aware file system format, it can be mounted using the appropriate 79 Solaris file system support. 80 .SH ZIP/JAZ DRIVE SUPPORT 81 \fBZIP/JAZ\fR media provide varied data capacity points; a single \fBJAZ 82 \fRdrive can store up to 2 GBytes of data, while a ZIP-250 can store up to 83 250MBytes of data. \fBZIP/JAZ\fR drives can be read-from or written-to using 84 the appropriate drive. 85 .sp 86 .LP 87 When a \fBZIP/JAZ\fR drive is opened, the eject button is disabled to prevent 88 the manual removal of a disk until the last \fBclose()\fR is called. No volume 89 label is required for a \fBZIP/JAZ\fR drive. If the \fBZIP/JAZ\fR drive 90 contains data recorded in a Solaris-aware file system format, it can be mounted 91 using the appropriate Solaris file system support. 92 .SH DEVICE STATISTICS SUPPORT 93 Each device maintains I/O statistics for the device and for partitions 94 allocated for that device. For each device/partition, the driver accumulates 95 reads, writes, bytes read, and bytes written. The driver also initiates 96 hi-resolution time stamps at queue entry and exit points to enable monitoring 97 of residence time and cumulative residence-length product for each queue. 98 .sp 99 .LP 100 Not all device drivers make per-partition IO statistics available for 101 reporting. \fBsd\fR and \fBssd\fR(7D) per-partition statistics are enabled by 102 default but may be disabled in their configuration files. 103 .SH IOCTLS 104 Refer to \fBdkio\fR(7I), and \fBcdio\fR(7I) 105 .SS "ERRORS" 106 .ne 2 107 .na 108 \fB\fBEACCES\fR\fR 109 .ad 110 .RS 10n 111 Permission denied 112 .RE 113 114 .sp 115 .ne 2 116 .na 117 \fB\fBEBUSY\fR\fR 118 .ad 119 .RS 10n 120 The partition was opened exclusively by another thread 121 .RE 122 123 .sp 124 .ne 2 125 .na 126 \fB\fBEFAULT\fR\fR 127 .ad 128 .RS 10n 129 The argument features a bad address 130 .RE 131 132 .sp 133 .ne 2 134 .na 135 \fB\fBEINVAL\fR\fR 136 .ad 137 .RS 10n 138 Invalid argument 139 .RE 140 141 .sp 142 .ne 2 143 .na 144 \fB\fBENOTTY\fR\fR 145 .ad 146 .RS 10n 147 The device does not support the requested ioctl function 148 .RE 149 150 .sp 151 .ne 2 152 .na 153 \fB\fBENXIO\fR\fR 154 .ad 155 .RS 10n 156 During opening, the device did not exist. During close, the drive unlock failed 157 .RE 158 159 .sp 160 .ne 2 161 .na 162 \fB\fBEROFS\fR\fR 163 .ad 164 .RS 10n 165 The device is read-only 166 .RE 167 168 .sp 169 .ne 2 170 .na 171 \fB\fBEAGAIN\fR\fR 172 .ad 173 .RS 10n 174 Resource temporarily unavailable 175 .RE 176 177 .sp 178 .ne 2 179 .na 180 \fB\fBEINTR\fR\fR 181 .ad 182 .RS 10n 183 A signal was caught during the execution of the \fBioctl()\fR function 184 .RE 185 186 .sp 187 .ne 2 188 .na 189 \fB\fBENOMEM\fR\fR 190 .ad 191 .RS 10n 192 Insufficient memory 193 .RE 194 195 .sp 196 .ne 2 197 .na 198 \fB\fBEPERM\fR\fR 199 .ad 200 .RS 10n 201 Insufficient access permission 202 .RE 203 204 .sp 205 .ne 2 206 .na 207 \fB\fBEIO\fR\fR 208 .ad 209 .RS 10n 210 An I/O error occurred. Refer to notes for details on copy-protected DVD-ROM 211 media. 212 .RE 213 214 .SH CONFIGURATION 215 The \fBsd\fR driver can be configured by defining properties in the 216 \fBsd.conf\fR file. The \fBsd\fR driver supports the following properties: 217 .sp 218 .ne 2 219 .na 220 \fB\fBenable-partition-kstats\fR\fR 221 .ad 222 .RS 27n 223 The default value is 1, which causes partition IO statistics to be maintained. 224 Set this value to zero to prevent the driver from recording partition 225 statistics. This slightly reduces the CPU overhead for IO, mimimizes the amount 226 of \fBsar\fR(1) data collected and makes these statistics unavailable for 227 reporting by \fBiostat\fR(1M) even though the \fB-p\fR/\fB-P\fR option is 228 specified. Regardless of this setting, disk IO statistics are always 229 maintained. 230 .RE 231 232 .sp 233 .ne 2 234 .na 235 \fB\fBqfull-retries\fR\fR 236 .ad 237 .RS 27n 238 The supplied value is passed as the \fBqfull-retries\fR capability value of the 239 HBA driver. See \fBscsi_ifsetcap\fR(9F) for details. 240 .RE 241 242 .sp 243 .ne 2 244 .na 245 \fB\fBqfull-retry-interval\fR\fR 246 .ad 247 .RS 27n 248 The supplied value is passed as the \fBqfull-retry interval\fR capability value 249 of the HBA driver. See \fBscsi_ifsetcap\fR(9F) for details. 250 .RE 251 252 .sp 253 .ne 2 254 .na 255 \fB\fBallow-bus-device-reset\fR\fR 256 .ad 257 .RS 27n 258 The default value is 1, which allows resetting to occur. Set this value to 259 \fB0\fR (zero) to prevent the \fBsd\fR driver from calling \fBscsi_reset\fR(9F) 260 with a second argument of \fBRESET_TARGET\fR when in error-recovery mode. This 261 \fBscsi_reset\fR(9F) call may prompt the HBA driver to send a SCSI Bus Device 262 Reset message. The \fBscsi_reset\fR(9F) call with a second argument of 263 \fBRESET_TARGET\fR may result from an explicit request via the \fBUSCSICMD\fR 264 \fBioctl\fR. Some high-availability multi-initiator systems may wish to 265 prohibit the Bus Device Reset message; to do this, set the 266 \fBallow-bus-device-reset\fR property to \fB0\fR. 267 .RE 268 269 .sp 270 .ne 2 271 .na 272 \fBoptical-device-bind\fR 273 .ad 274 .RS 27n 275 Controls the binding of the driver to non self-identifying SCSI target optical 276 devices. (See \fBscsi\fR(4)). The default value is 1, which causes \fBsd\fR to 277 bind to DTYPE_OPTICAL devices (as noted in \fBscsi\fR(4)). Setting this value 278 to 0 prevents automatic binding. The default behavior for the SPARC-based 279 \fBsd\fR driver prior to Solaris 9 was not to bind to optical devices. 280 .RE 281 282 .sp 283 .ne 2 284 .na 285 \fB\fBpower-condition\fR\fR 286 .ad 287 .RS 27n 288 Boolean type, when set to \fBFalse\fR, it indicates that the disk does not 289 support \fBpower condition\fR field in the \fBSTART STOP UNIT\fR command. 290 .RE 291 292 .sp 293 .LP 294 In addition to the above properties, some device-specific tunables can be 295 configured in \fBsd.conf\fR using the \fBsd-config-list\fR global property. The 296 value of this property is a list of duplets. The formal syntax is: 297 .sp 298 .in +2 299 .nf 300 sd-config-list = <duplet> [, <duplet> ]* ; 301 302 where 303 304 <duplet>:= "<vid+pid>" , "<tunable-list>" 305 306 and 307 308 <tunable-list>:= <tunable> [, <tunable> ]*; 309 <tunable> = <name> : <value> 310 311 The <vid+pid> is the string that is returned by the target device 312 on a SCSI inquiry command. 313 314 The <tunable-list> contains one or more tunables to apply to 315 all target devices with the specified <vid+pid>. 316 317 Each <tunable> is a <name> : <value> pair. Supported 318 tunable names are: 319 320 delay-busy: when busy, nsecs of delay before retry. 321 322 retries-timeout: retries to perform on an IO timeout. 323 .fi 324 .in -2 325 326 .sp 327 .ne 2 328 .na 329 \fB\fBmmc-gesn-polling\fR\fR 330 .ad 331 .RS 20n 332 For optical drives compliant with \fBMMC-3\fR and supporting the \fBGET EVENT 333 STATUS NOTIFICATION\fR command, this command is used for periodic media state 334 polling, usually initiated by the \fBDKIOCSTATE\fR \fBdkio\fR(7I) ioctl. To 335 disable the use of this command, set this boolean property to \fBfalse\fR. In 336 that case, either the \fBTEST UNIT READY\fR or zero-length \fBWRITE(10)\fR 337 command is used instead. 338 .RE 339 340 .SH EXAMPLES 341 .in +2 342 .nf 343 The following is an example of a global sd-config-list property: 344 345 sd-config-list = 346 "SUN T4", "delay-busy:600, retries-timeout:6", 347 "SUN StorEdge_3510", "retries-timeout:3"; 348 .fi 349 .in -2 350 351 .SH FILES 352 .ne 2 353 .na 354 \fB\fB/kernel/drv/sd.conf\fR\fR 355 .ad 356 .RS 23n 357 Driver configuration file 358 .RE 359 360 .sp 361 .ne 2 362 .na 363 \fB\fB/dev/dsk/cntndnsn\fR\fR 364 .ad 365 .RS 23n 366 Block files 367 .RE 368 369 .sp 370 .ne 2 371 .na 372 \fB\fB/dev/rdsk/cntndnsn\fR\fR 373 .ad 374 .RS 23n 375 Raw files 376 .RE 377 378 .sp 379 .LP 380 Where: 381 .sp 382 .ne 2 383 .na 384 \fBcn\fR 385 .ad 386 .RS 6n 387 controller n 388 .RE 389 390 .sp 391 .ne 2 392 .na 393 \fBtn\fR 394 .ad 395 .RS 6n 396 SCSI target id n (0-6) 397 .RE 398 399 .sp 400 .ne 2 401 .na 402 \fBdn\fR 403 .ad 404 .RS 6n 405 SCSI LUN n (0-7 normally; some HBAs support LUNs to 15 or 32. See the specific 406 manpage for details) 407 .RE 408 409 .sp 410 .ne 2 411 .na 412 \fBsn\fR 413 .ad 414 .RS 6n 415 partition n (0-7) 416 .RE 417 418 .SS "x86 Only" 419 .ne 2 420 .na 421 \fB\fB/dev/rdsk/cntndnpn\fR\fR 422 .ad 423 .RS 22n 424 raw files 425 .RE 426 427 .sp 428 .LP 429 Where: 430 .sp 431 .ne 2 432 .na 433 \fBpn\fR 434 .ad 435 .RS 6n 436 Where \fIn\fR=0 the node corresponds to the entire disk. 437 .RE 438 439 .SH SEE ALSO 440 \fBsar\fR(1), \fBcfgadm_scsi\fR(1M), \fBfdisk\fR(1M), \fBformat\fR(1M), 441 \fBiostat\fR(1M), \fBclose\fR(2), \fBioctl\fR(2), \fBlseek\fR(2), 442 \fBread\fR(2), \fBwrite\fR(2), \fBdriver.conf\fR(4), \fBscsi\fR(4), 443 \fBfilesystem\fR(5), \fBscsa2usb\fR(7D), \fBssd\fR(7D), \fBhsfs\fR(7FS), 444 \fBpcfs\fR(7FS), \fBudfs\fR(7FS), \fBcdio\fR(7I), \fBdkio\fR(7I), 445 \fBscsi_ifsetcap\fR(9F), \fBscsi_reset\fR(9F) 446 .sp 447 .LP 448 \fIANSI Small Computer System Interface-2 (SCSI-2)\fR 449 .sp 450 .LP 451 \fIATA Packet Interface for CD-ROMs, SFF-8020i\fR 452 .sp 453 .LP 454 \fIMt.Fuji Commands for CD and DVD, SFF8090v3\fR 455 .SH DIAGNOSTICS 456 .in +2 457 .nf 458 Error for Command:\fI<command name>\fR 459 Error Level: Fatal 460 Requested Block: \fI<n>\fR 461 Error Block: \fI<m>\fR 462 Vendor:'\fI<vendorname>\fR\&' 463 Serial Number:'\fI<serial number>\fR\&' 464 Sense Key:\fI<sense key name>\fR 465 .fi 466 .in -2 467 .sp 468 469 .sp 470 .ne 2 471 .na 472 \fBASC: 0x<a> (<ASC name>), ASCQ: 0x<b>, FRU: 0x<c>\fR 473 .ad 474 .sp .6 475 .RS 4n 476 The command indicated by <command name> failed. The Requested Block is the 477 block where the transfer started and the Error Block is the block that caused 478 the error. Sense Key, \fBASC\fR, and \fBASCQ\fR information is returned by the 479 target in response to a request sense command. 480 .RE 481 482 .sp 483 .ne 2 484 .na 485 \fBCaddy not inserted in drive\fR 486 .ad 487 .sp .6 488 .RS 4n 489 The drive is not ready because no caddy has been inserted. 490 .RE 491 492 .sp 493 .ne 2 494 .na 495 \fBCheck Condition on REQUEST SENSE\fR 496 .ad 497 .sp .6 498 .RS 4n 499 A REQUEST SENSE command completed with a check condition. The original command 500 will be retried a number of times. 501 .RE 502 503 .sp 504 .ne 2 505 .na 506 \fBLabel says <m> blocks Drive says <n> blocks\fR 507 .ad 508 .sp .6 509 .RS 4n 510 There is a discrepancy between the label and what the drive returned on the 511 \fBREAD CAPACITY\fR command. 512 .RE 513 514 .sp 515 .ne 2 516 .na 517 \fBNot enough sense information\fR 518 .ad 519 .sp .6 520 .RS 4n 521 The request sense data was less than expected. 522 .RE 523 524 .sp 525 .ne 2 526 .na 527 \fBRequest Sense couldn't get sense data\fR 528 .ad 529 .sp .6 530 .RS 4n 531 The \fBREQUEST SENSE\fR command did not transfer any data. 532 .RE 533 534 .sp 535 .ne 2 536 .na 537 \fBReservation Conflict\fR 538 .ad 539 .sp .6 540 .RS 4n 541 The drive was reserved by another initiator. 542 .RE 543 544 .sp 545 .ne 2 546 .na 547 \fBSCSI transport failed: reason \fB\&'xxxx'\fR: {retrying|giving up}\fR 548 .ad 549 .sp .6 550 .RS 4n 551 The host adapter has failed to transport a command to the target for the reason 552 stated. The driver will either retry the command or, ultimately, give up. 553 .RE 554 555 .sp 556 .ne 2 557 .na 558 \fBUnhandled Sense Key<\fIn\fR>\fR 559 .ad 560 .sp .6 561 .RS 4n 562 The REQUEST SENSE data included an invalid sense. 563 .RE 564 565 .sp 566 .ne 2 567 .na 568 \fBUnit not ready. Additional sense code 0x\fR 569 .ad 570 .sp .6 571 .RS 4n 572 \fI<n>\fR The drive is not ready. 573 .RE 574 575 .sp 576 .ne 2 577 .na 578 \fBCan't do switch back to mode 1\fR 579 .ad 580 .sp .6 581 .RS 4n 582 A failure to switch back to read mode 1. 583 .RE 584 585 .sp 586 .ne 2 587 .na 588 \fBCorrupt label - bad geometry\fR 589 .ad 590 .sp .6 591 .RS 4n 592 The disk label is corrupted. 593 .RE 594 595 .sp 596 .ne 2 597 .na 598 \fBCorrupt label - label checksum failed\fR 599 .ad 600 .sp .6 601 .RS 4n 602 The disk label is corrupted. 603 .RE 604 605 .sp 606 .ne 2 607 .na 608 \fBCorrupt label - wrong magic number\fR 609 .ad 610 .sp .6 611 .RS 4n 612 The disk label is corrupted. 613 .RE 614 615 .sp 616 .ne 2 617 .na 618 \fBDevice busy too long\fR 619 .ad 620 .sp .6 621 .RS 4n 622 The drive returned busy during a number of retries. 623 .RE 624 625 .sp 626 .ne 2 627 .na 628 \fBDisk not responding to selection\fR 629 .ad 630 .sp .6 631 .RS 4n 632 The drive is powered down or died 633 .RE 634 635 .sp 636 .ne 2 637 .na 638 \fBFailed to handle UA\fR 639 .ad 640 .sp .6 641 .RS 4n 642 A retry on a Unit Attention condition failed. 643 .RE 644 645 .sp 646 .ne 2 647 .na 648 \fBI/O to invalid geometry\fR 649 .ad 650 .sp .6 651 .RS 4n 652 The geometry of the drive could not be established. 653 .RE 654 655 .sp 656 .ne 2 657 .na 658 \fBIncomplete read/write - retrying/giving up\fR 659 .ad 660 .sp .6 661 .RS 4n 662 There was a residue after the command completed normally. 663 .RE 664 665 .sp 666 .ne 2 667 .na 668 \fBNo bp for direct access device format geometry\fR 669 .ad 670 .sp .6 671 .RS 4n 672 A bp with consistent memory could not be allocated. 673 .RE 674 675 .sp 676 .ne 2 677 .na 678 \fBNo bp for disk label\fR 679 .ad 680 .sp .6 681 .RS 4n 682 A bp with consistent memory could not be allocated. 683 .RE 684 685 .sp 686 .ne 2 687 .na 688 \fBNo bp for fdisk\fR 689 .ad 690 .sp .6 691 .RS 4n 692 A bp with consistent memory could not be allocated. 693 .RE 694 695 .sp 696 .ne 2 697 .na 698 \fBNo bp for rigid disk geometry\fR 699 .ad 700 .sp .6 701 .RS 4n 702 A bp with consistent memory could not be allocated. 703 .RE 704 705 .sp 706 .ne 2 707 .na 708 \fBNo mem for property\fR 709 .ad 710 .sp .6 711 .RS 4n 712 Free memory pool exhausted. 713 .RE 714 715 .sp 716 .ne 2 717 .na 718 \fBNo memory for direct access device format geometry\fR 719 .ad 720 .sp .6 721 .RS 4n 722 Free memory pool exhausted. 723 .RE 724 725 .sp 726 .ne 2 727 .na 728 \fBNo memory for disk label\fR 729 .ad 730 .sp .6 731 .RS 4n 732 Free memory pool exhausted. 733 .RE 734 735 .sp 736 .ne 2 737 .na 738 \fBNo memory for rigid disk geometry\fR 739 .ad 740 .sp .6 741 .RS 4n 742 The disk label is corrupted. 743 .RE 744 745 .sp 746 .ne 2 747 .na 748 \fBNo resources for dumping\fR 749 .ad 750 .sp .6 751 .RS 4n 752 A packet could not be allocated during dumping. 753 .RE 754 755 .sp 756 .ne 2 757 .na 758 \fBOffline\fR 759 .ad 760 .sp .6 761 .RS 4n 762 Drive went offline; probably powered down. 763 .RE 764 765 .sp 766 .ne 2 767 .na 768 \fBRequeue of command fails\fR 769 .ad 770 .sp .6 771 .RS 4n 772 Driver attempted to retry a command and experienced a transport error. 773 .RE 774 775 .sp 776 .ne 2 777 .na 778 \fBsdrestart transport failed()\fR 779 .ad 780 .sp .6 781 .RS 4n 782 Driver attempted to retry a command and experienced a transport error. 783 .RE 784 785 .sp 786 .ne 2 787 .na 788 \fBTransfer length not modulo\fR 789 .ad 790 .sp .6 791 .RS 4n 792 Illegal request size. 793 .RE 794 795 .sp 796 .ne 2 797 .na 798 \fBTransport of request sense fails()\fR 799 .ad 800 .sp .6 801 .RS 4n 802 Driver attempted to submit a request sense command and failed. 803 .RE 804 805 .sp 806 .ne 2 807 .na 808 \fBTransport rejected()\fR 809 .ad 810 .sp .6 811 .RS 4n 812 Host adapter driver was unable to accept a command. 813 .RE 814 815 .sp 816 .ne 2 817 .na 818 \fBUnable to read label\fR 819 .ad 820 .sp .6 821 .RS 4n 822 Failure to read disk label. 823 .RE 824 825 .sp 826 .ne 2 827 .na 828 \fBUnit does not respond to selection\fR 829 .ad 830 .sp .6 831 .RS 4n 832 Drive went offline; probably powered down. 833 .RE 834 835 .SH NOTES 836 DVD-ROM media containing DVD-Video data may follow/adhere to the requirements 837 of content scrambling system or copy protection scheme. Reading of 838 copy-protected sector will cause I/O error. Users are advised to use the 839 appropriate playback software to view video contents on DVD-ROM media 840 containing DVD-Video data. --- EOF ---