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08.17. My ATAPI (IDE) CD-ROM driver won't recognize the CD-ROM.




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This item is from the Yet Another Enhanced IDE/Fast-ATA/ATA-2 FAQ, by John Wehman and Peter den Haan with numerous contributions by others. (v1.92).

08.17. My ATAPI (IDE) CD-ROM driver won't recognize the CD-ROM.

If the CD-ROM is connected to the secondary channel, make sure this channel is enabled. Some BIOSes will enable the channel only if one or more harddisks using this channel are defined in the setup; in that case, you can't avoid putting the CD on the same cable as a harddisk until you manage to get your BIOS updated.

You may also get trouble if the CD-ROM is jumpered as slave and there's no master on its channel.

Finally, the PIO mode (speed) used by the interface may be too high, especially if the CD-ROM shares its cable with a harddisk. Many interface drivers and BIOSes are not ATAPI-aware and don't take the CD-ROM into account when determining the maximum possible speed. The best fix is to move the CD-ROM to a different channel. Manually lowering the mode a notch or two should also help; this is usually done either through the BIOS setup or by passing options to a device driver in the CONFIG.SYS.

9.0 The user's net.resource guide

There are a large number of FAQs and other resources on the net. Daniel Tauritz (dtauritz@WI.LeidenUniv.NL) no longer maintains his EIDE Mini-FAQ that contains a short but potentially useful list of available interfaces; it needs to be expanded and maintained---any takers? There is another, technically oriented, FAQ on ATA-2, EIDE etcetera by Hale Landis (hlandis@ibm.net). All of this and more can be found on

o <ftp://ftp.wi.leidenuniv.nl/pub/faqs>

o <http://www.wi.leidenuniv.nl/ata>

An incredible range of hardware related issues is addressed by the comp.sys.ibm.pc.hardware FAQ, maintained by Ralph Valentino (ralf@wpi.wpi.edu). It can be found on comp.answers and the FAQ repository <ftp://rtfm.mit.edu>. It incorporates the world-famous 'Jumper FAQ' <ftp://rtfm.mit.edu/pub/usenet/news.answers/ faq/part3>.

On the tangential subject of Windows for Workgroups' 32-bit file access, Mike McCormick (m.mccormick2@genie.geis.com) has a good FAQ, posted on comp.os.ms-windows.windows.setup and many other groups. It can also be found on comp.answers and therefore on rtfm.mit.edu as well.

Roedy Green's (roedy@bix.com) "PCI EIDE controller flaws" FAQ is included with his EIDE test <ftp://garbo.uwasa.fi/pc/diskutil/> program. The latter will test your system for the bugs that may arise if it has a CMD640 or RZ1000 interface chip (used on many pre-Triton Intel Pentium boards, for instance). With either of these, your data is in danger every day you postpone reading this.

The SimTel repository, the primary mirror of which is <ftp://ftp.coast.net/> or <http://www.coast.net>, contains an immense number of useful programs (PD, freeware and shareware). A tiny selection, all from /SimTel/msdos/diskutil/:

o ideinf10.zip (will determine the properties of your harddisk(s)--not a benchmark).

o 3drvs260.zip (gives support for 3 harddisks under DOS).

o dqwik211.zip (block mode driver).

o no_idle.zip (disables the auto-idle power saving feature of some harddrives).

o 1seagate.zip (specs for *all* Seagate harddrives).

o wasted15.zip (shows wasted space due to cluster size).

o presz111.zip (nondestructive partition resizer). r

Note that the version numbers may have changed; also, you should preferably use a mirror close to you instead of the oakland site.

A more manageable selection of useful utilities, drivers and information (this FAQ :-) can be found on

o <ftp://ftp.netcom.com/pub/cl/clau/> (this represents the latest known location of Chung Y. Lau's famous wandering FTP site)

o <ftp://ftp.rahul.net/pub/lps/>

One of the most thorough low level harddisk benchmarks on Earth, Marnix Timmermans' Check Harddisk, is in beta. Check it out at <http://huizen.dds.nl/~checkhd>. Of course, the usual precautions with beta software apply.

SimTel has a copy of TheRef[TM] by F. Robert Falbo, a giant hardware reference; it is rather outdated, but fortunately you can access a more up to date copy on the web at <http://theref.c3d.rl.af.mil>.

Frank Pikelner (frank@cs.yorku.ca) has compiled an excellent, up to date list of >500MB harddisk and >4x CD-ROM drive specifications. You can access it through <http://www.cs.yorku.ca/People/frank/Welcome.html>.

 

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