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- Short: V1.5, Amiga Magneto-Optical Drive FAQ
- Author: mark_k@iname.com
- Uploader: mark_k@iname.com
- Type: docs/help
-
- Amiga Magneto-Optical Drive FAQ 1.5 (4-Oct-99)
-
- Copyright © 1998-1999 by Mark Knibbs
-
-
- Changes since version 1.4
- -------------------------
-
- 1.5 4-Oct-99, sixth public release
- · Corrected number of sectors in mount files for 1.3GB 3½" disks. They
- actually have 605846 user sectors. Further independent confirmation of
- this would be appreciated.
- · Moved stuff about cleaning drive and disks to the new maintenance section.
- · Added warning about using the correct type of cleaning cartridge for
- cleaning the drive lens.
- · Mention that Fujitsu's latest 3½" drives have a seek time of 23ms.
- · Changed BlocksPerTrack and HighCyl values of PC Superfloppy and FFS, SFS
- 540MB mount files so that HighCyl < 32768. This should have no consequence
- other than to improve compatibility with old, badly written disk editor
- tools (e.g. the ProjectD EditorTool).
- · Various other minor changes.
-
-
-
- Here are some extracts from the FAQ.
-
-
- Introduction
- ------------
- The Amiga Magneto-Optical Drive FAQ contains information about using magneto-
- optical (MO) disk drives with Amiga computers. It is freely distributable
- providing no changes are made.
-
- I hope the availability of this document will encourage more Amiga users to
- consider optical storage, instead of fragile magnetic media like Zip, Jaz and
- SyQuest.
-
-
- What are Magneto-Optical Disk Drives?
- -------------------------------------
- Magneto-optical ("MO") disk drives are versatile removable storage devices,
- which use very robust and inexpensive media. You can use an MO disk just like
- a large floppy disk, or like a hard disk.
-
- Magneto-Optical storage has many advantages over other types of removable media:
-
- · Media life is at least 30 years, which greatly exceeds the life of magnetic
- media like floppy disks, Zip and Jaz disks. Some manufacturers quote media
- life of 50 or even 100 years. Data can be rewritten at least a million
- times, and read at least 10 million times; some manufacturers quote figures
- ten times this. This figure also exceeds that for magnetic media.
-
- · There is no physical contact between disk surface and drive head, so there
- is no possibility of data loss through a head crash.
-
- · MO drives are backwardly compatible, which means that if you upgrade your
- drive in the future, you will be able to read and write all your existing
- disks on the new drive.
-
- · MO disks are not susceptible to magnetic fields.
-
- · If, for example, you spill a cup of coffee on an MO disk, you can clean the
- disk surface and continue to use the disk. Cleaning kits are available for
- both MO drives and disks. Disk cleaning kits are very cheap.
-
- · MO disks are simple in construction, unlike some other kinds of removable
- media which may contain moving parts. This is another reason why MO offers
- greater reliability than magnetic media.
-
- · MO disks are available in several different capacities, which vary in
- price. Cost per megabyte is lower than all other kinds of random access
- removable media.
-
- · Unlike Zip, Jaz, SyQuest etc., MO drives and disks are not proprietary, and
- they are made by many companies. The disks are covered by various
- international standards. So you will not be stuck if your drive
- manufacturer goes bust, as happened recently to SyQuest.
-
- · Compared to other forms of optical storage, there are no restrictions on
- writing and rewriting data to MO disks, unlike CD-R or CD-RW. Also unlike
- CD-R & CD-RW, since the disk itself is protected by a plastic casing, there
- is no danger of data corruption due to the disk getting scratched.
-
- · MO drives normally automatically verify written data to guarantee data
- integrity. There is no such verification with CD-R, CD-RW or most types of
- magnetic media, so to be assured that the data has been written properly
- when using these, you would need to manually compare all copied files.
-
- · MO drives have much shorter seek times than PD and DVD-RAM drives.
-
- · Magneto-optical technology is well-proven. I believe the first ISO standard
- 5¼" MO drives were released in 1989 or 1990, with 128MB 3½" MO drives
- becoming available in 1991. 640MB 3½" drives have been available since
- 1996. Originally MO was largely restricted to professional use due to high
- drive cost, but over the past couple of years this situation has changed.
-
- · MO disks are convenient, compact and easy to use. 3½" MO disks are the same
- size as two floppy disks stacked on top of each other. They have a
- write-protect tab which works just like a floppy disk's.
-
-
- ============================= Archive contents =============================
-
- Original Packed Ratio Date Time Name
- -------- ------- ----- --------- -------- -------------
- 628 269 57.1% 05-Oct-99 22:10:18 Amiga_MO_FAQ.info
- 112535 38392 65.8% 04-Oct-99 12:30:58 +Amiga_MO_FAQ
- 287 200 30.3% 04-Oct-99 23:11:30 +Amiga_MO_FAQ.info
- 4765 2194 53.9% 04-Oct-99 23:18:04 +Amiga_MO_FAQ.readme
- 276 189 31.5% 04-Oct-99 23:19:02 +Amiga_MO_FAQ.readme.info
- 628 277 55.8% 22-Jun-99 16:43:54 +DOSDrivers-3½.info
- 628 272 56.6% 22-Jun-99 16:44:30 +BSD.info
- 981 560 42.9% 21-Mar-99 18:38:40 +BSD230
- 529 305 42.3% 18-Feb-99 17:44:36 +BSD230.info
- 983 559 43.1% 21-Mar-99 18:38:54 +BSD540
- 529 304 42.5% 18-Feb-99 17:44:36 +BSD540.info
- 628 266 57.6% 22-Jun-99 16:44:04 +FFS.info
- 806 456 43.4% 21-Mar-99 18:33:08 +MO128
- 529 304 42.5% 22-Jun-99 16:41:38 +MO128.info
- 843 478 43.2% 12-Sep-99 22:38:56 +MO1300
- 529 306 42.1% 05-Oct-99 22:11:26 +MO1300.info
- 806 457 43.3% 21-Mar-99 18:33:26 +MO230
- 529 305 42.3% 22-Jun-99 16:41:38 +MO230.info
- 808 457 43.4% 04-Oct-99 12:24:26 +MO540
- 529 305 42.3% 04-Oct-99 12:25:48 +MO540.info
- 829 468 43.5% 21-Mar-99 18:32:04 +MO640
- 529 304 42.5% 22-Jun-99 16:41:38 +MO640.info
- 628 267 57.4% 22-Jun-99 16:44:20 +Mac.info
- 780 432 44.6% 21-Jun-99 17:31:56 +MAC128
- 529 303 42.7% 22-Jun-99 16:42:08 +MAC128.info
- 814 456 43.9% 12-Sep-99 22:39:40 +MAC1300
- 529 305 42.3% 05-Oct-99 22:12:32 +MAC1300.info
- 780 432 44.6% 21-Mar-99 18:41:32 +MAC230
- 529 308 41.7% 22-Jun-99 16:42:08 +MAC230.info
- 782 433 44.6% 21-Mar-99 18:41:58 +MAC540
- 529 306 42.1% 22-Jun-99 16:42:08 +MAC540.info
- 798 446 44.1% 21-Mar-99 18:42:10 +MAC640
- 529 304 42.5% 22-Jun-99 16:42:08 +MAC640.info
- 1354 741 45.2% 28-Nov-98 23:03:12 +MAC640A
- 529 303 42.7% 22-Jun-99 16:42:08 +MAC640A.info
- 628 271 56.8% 22-Jun-99 16:43:58 +PC.info
- 1576 760 51.7% 28-Nov-98 23:05:02 +MOC
- 529 305 42.3% 22-Jun-99 16:43:58 +MOC.info
- 991 550 44.5% 21-Mar-99 18:39:22 +PC128
- 529 303 42.7% 22-Jun-99 16:43:56 +PC128.info
- 977 544 44.3% 21-Mar-99 18:39:38 +PC230
- 529 303 42.7% 22-Jun-99 16:43:56 +PC230.info
- 979 542 44.6% 21-Mar-99 18:40:06 +PC540
- 529 303 42.7% 22-Jun-99 16:43:56 +PC540.info
- 832 467 43.8% 04-Oct-99 12:11:32 +SF128
- 529 305 42.3% 04-Oct-99 12:14:34 +SF128.info
- 849 478 43.6% 04-Oct-99 12:15:30 +SF1300
- 529 305 42.3% 04-Oct-99 12:15:38 +SF1300.info
- 832 470 43.5% 04-Oct-99 12:12:14 +SF230
- 529 307 41.9% 04-Oct-99 12:14:28 +SF230.info
- 834 469 43.7% 04-Oct-99 12:24:46 +SF540
- 529 306 42.1% 04-Oct-99 12:26:58 +SF540.info
- 835 469 43.8% 04-Oct-99 12:13:38 +SF640
- 529 307 41.9% 04-Oct-99 12:14:14 +SF640.info
- 628 269 57.1% 22-Jun-99 16:44:12 +SFS.info
- 759 429 43.4% 21-Mar-99 18:38:16 +SFS128
- 529 303 42.7% 22-Jun-99 16:41:54 +SFS128.info
- 775 442 42.9% 12-Sep-99 22:40:44 +SFS1300
- 529 302 42.9% 05-Oct-99 22:11:46 +SFS1300.info
- 759 430 43.3% 21-Mar-99 18:38:04 +SFS230
- 529 305 42.3% 22-Jun-99 16:41:54 +SFS230.info
- 761 431 43.3% 04-Oct-99 12:26:04 +SFS540
- 529 305 42.3% 04-Oct-99 12:26:16 +SFS540.info
- 761 431 43.3% 21-Mar-99 18:37:36 +SFS640
- 529 305 42.3% 22-Jun-99 16:41:54 +SFS640.info
- 628 274 56.3% 22-Jun-99 16:44:42 +DOSDrivers-5¼.info
- 628 265 57.8% 22-Jun-99 16:44:50 +FFS.info
- 833 475 42.9% 18-Jun-99 16:48:38 +MO1.2
- 529 304 42.5% 21-Jun-99 17:56:22 +MO1.2.info
- 855 484 43.3% 21-Jun-99 16:10:34 +MO1.3
- 529 302 42.9% 21-Jun-99 17:56:22 +MO1.3.info
- 833 477 42.7% 18-Jun-99 16:52:08 +MO2.3
- 529 301 43.1% 21-Jun-99 17:56:22 +MO2.3.info
- 857 487 43.1% 21-Jun-99 16:10:46 +MO2.6
- 529 305 42.3% 21-Jun-99 17:56:22 +MO2.6.info
- 833 477 42.7% 18-Jun-99 16:58:20 +MO4.1
- 529 306 42.1% 21-Jun-99 17:56:22 +MO4.1.info
- 859 489 43.0% 21-Jun-99 16:10:58 +MO4.8
- 529 306 42.1% 21-Jun-99 17:56:22 +MO4.8.info
- 857 486 43.2% 21-Jun-99 16:11:08 +MO5.2
- 529 303 42.7% 21-Jun-99 17:56:22 +MO5.2.info
- 829 472 43.0% 21-Mar-99 18:36:50 +MO600
- 529 302 42.9% 21-Jun-99 17:56:22 +MO600.info
- 929 511 44.9% 21-Jun-99 16:31:40 +MO650
- 529 303 42.7% 21-Jun-99 17:56:22 +MO650.info
- 628 268 57.3% 22-Jun-99 16:45:00 +Mac.info
- 807 448 44.4% 21-Jun-99 17:42:02 +MAC1.2
- 529 302 42.9% 21-Jun-99 17:57:00 +MAC1.2.info
- 807 448 44.4% 21-Jun-99 17:45:08 +MAC1.3
- 529 302 42.9% 21-Jun-99 17:57:00 +MAC1.3.info
- 807 448 44.4% 21-Jun-99 17:42:52 +MAC2.3
- 529 307 41.9% 21-Jun-99 17:57:00 +MAC2.3.info
- 809 447 44.7% 21-Jun-99 17:45:18 +MAC2.6
- 529 305 42.3% 21-Jun-99 17:56:58 +MAC2.6.info
- 807 447 44.6% 21-Jun-99 17:43:50 +MAC4.1
- 529 306 42.1% 21-Jun-99 17:57:00 +MAC4.1.info
- 809 450 44.3% 21-Jun-99 17:45:48 +MAC4.8
- 529 303 42.7% 21-Jun-99 17:57:00 +MAC4.8.info
- 809 447 44.7% 21-Jun-99 17:46:24 +MAC5.2
- 529 301 43.1% 21-Jun-99 17:57:00 +MAC5.2.info
- 805 447 44.4% 21-Jun-99 17:41:08 +MAC600
- 529 302 42.9% 21-Jun-99 17:57:00 +MAC600.info
- 807 448 44.4% 21-Jun-99 17:47:26 +MAC650
- 529 304 42.5% 21-Jun-99 17:57:00 +MAC650.info
- 628 273 56.5% 22-Jun-99 16:45:04 +PC.info
- 841 469 44.2% 21-Jun-99 17:14:34 +SF1.2
- 529 303 42.7% 21-Jun-99 17:57:30 +SF1.2.info
- 842 469 44.2% 21-Jun-99 17:16:44 +SF1.3
- 529 301 43.1% 21-Jun-99 17:57:30 +SF1.3.info
- 841 469 44.2% 21-Jun-99 17:14:40 +SF2.3
- 529 304 42.5% 21-Jun-99 17:57:30 +SF2.3.info
- 844 468 44.5% 21-Jun-99 17:17:34 +SF2.6
- 529 305 42.3% 21-Jun-99 17:57:30 +SF2.6.info
- 841 468 44.3% 21-Jun-99 17:14:48 +SF4.1
- 529 303 42.7% 21-Jun-99 17:57:32 +SF4.1.info
- 839 469 44.1% 21-Jun-99 17:14:18 +SF600
- 529 302 42.9% 21-Jun-99 17:57:30 +SF600.info
- 842 469 44.2% 21-Jun-99 17:15:54 +SF650
- 529 301 43.1% 21-Jun-99 17:57:30 +SF650.info
- 628 271 56.8% 22-Jun-99 16:44:54 +SFS.info
- 785 449 42.8% 21-Jun-99 16:12:48 +SFS1.2
- 529 303 42.7% 21-Jun-99 17:56:02 +SFS1.2.info
- 786 448 43.0% 21-Jun-99 16:12:42 +SFS1.3
- 529 303 42.7% 21-Jun-99 17:56:02 +SFS1.3.info
- 785 449 42.8% 21-Jun-99 16:13:20 +SFS2.3
- 529 303 42.7% 21-Jun-99 17:56:02 +SFS2.3.info
- 788 449 43.0% 21-Jun-99 16:13:46 +SFS2.6
- 529 306 42.1% 21-Jun-99 17:56:02 +SFS2.6.info
- 785 450 42.6% 21-Jun-99 16:14:08 +SFS4.1
- 529 305 42.3% 21-Jun-99 17:56:02 +SFS4.1.info
- 790 450 43.0% 21-Jun-99 16:14:30 +SFS4.8
- 529 306 42.1% 21-Jun-99 17:56:02 +SFS4.8.info
- 788 450 42.8% 21-Jun-99 16:14:50 +SFS5.2
- 529 303 42.7% 21-Jun-99 17:56:02 +SFS5.2.info
- 782 447 42.8% 21-Mar-99 18:36:08 +SFS600
- 529 302 42.9% 21-Jun-99 17:56:02 +SFS600.info
- 860 474 44.8% 21-Jun-99 16:09:58 +SFS650
- 529 302 42.9% 21-Jun-99 17:56:02 +SFS650.info
- 18480 11393 38.3% 18-Nov-98 16:45:24 +GPatch
- 628 270 57.0% 22-Jun-99 16:46:50 +HDToolBox patches.info
- 62 62 0.0% 24-Dec-98 23:39:44 +HDToolbox2.22_MO.gpch
- 62 62 0.0% 31-Dec-98 14:47:04 +HDToolBox2.2_MO.gpch
- 62 62 0.0% 18-Feb-99 16:46:58 +HDToolBox39.12_MO.gpch
- 62 62 0.0% 04-Feb-99 00:41:10 +HDToolBox40.3_MO.gpch
- 62 62 0.0% 24-Aug-98 11:30:18 +HDToolBox40.4_MO.gpch
- 31557 31557 0.0% 14-Dec-98 22:46:54 +3½_MO.jpg
- 28563 28563 0.0% 09-Dec-98 22:48:42 +5¼_MO.jpg
- 43520 43520 0.0% 23-Jun-99 17:18:18 +640drive.jpg
- 52489 52489 0.0% 23-Jun-99 19:28:26 +gimo.jpg
- 37677 37677 0.0% 14-Dec-98 22:44:10 +PowerMO_230II_and_disk.jpg
- 628 271 56.8% 22-Jun-99 16:47:08 +Scripts.info
- 400 265 33.7% 24-Aug-98 21:34:46 +AllowMORemoval
- 248 152 38.7% 06-Dec-98 17:31:16 +AllowMORemoval.info
- 337 238 29.3% 24-Aug-98 21:30:54 +EjectMO
- 248 149 39.9% 06-Dec-98 17:31:16 +EjectMO.info
- 410 276 32.6% 24-Aug-98 21:36:04 +PreventMORemoval
- 248 151 39.1% 06-Dec-98 17:31:16 +PreventMORemoval.info
- 50 50 0.0% 19-Apr-99 18:33:38 +SSOpticalPatch.gpch
- -------- ------- ----- --------- --------
- 425336 299112 29.6% 13-Oct-99 23:44:48 158 files
-