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- From: ridder@zowie.zso.dec.com (Hans)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: Mag Opt Drive on A3000: suggestions
- Message-ID: <1993Jan28.061947.16027@ninja.zso.dec.com>
- Date: 28 Jan 93 06:19:47 GMT
- References: <1993Jan22.104005.5291@learnlink.emory.edu>
- Sender: news@ninja.zso.dec.com (USENET News System)
- Organization: Digital Equipment Corporation - DECwest Engineering
- Lines: 30
- Nntp-Posting-Host: zowie.zso.dec.com
-
- In article <1993Jan22.104005.5291@learnlink.emory.edu> Jules@learnlink.emory.edu (Sean P. Murphy) writes:
- >I can't give you much information, but I have tried to get a Pinnacle
- >REO-650 MO drive to run on my 3000 with no luck. MO drives apparently use
- >non-standard block sizes (2048k?) and the only way I know of to access them
- >would be with a CD-ROM filesystem (no-writes) or with a custom one.
-
- I don't have an MO drive on my Amiga but I mess with them here at work,
- so I can tell you what I know. ISO standard 5.25 inch 600 Mbyte MO
- disks are formatted at the factory with 512 or 1024 byte sectors, and
- cannot be changed.
-
- As far as SCSI is concerned, they behave mostly like a SCSI "direct"
- (disk) type device (not to be confused with Amiga SCSIDirect) with a few
- extensions for optical media. The biggest difference is that MO drives
- usually return a device type of 7 (optical) to a SCSI Inquiry command
- instead of 0 (direct,) which is probably what HDToolBox (or equivalent)
- is expecting.
-
- Many MO drives allow you to change the device type using a vendor
- specific Mode Select page, but you need the SCSI manual for the drive
- (or some insider information) and a little programming to do that.
-
- >/========/ Sean Murphy, LearnLink Administrator
-
- -hans
- --
- Hans-Gabriel Ridder <ridder@rust.zso.dec.com>
- DECwest Engineering, Bellevue, Washington, USA
- "I'd rather be writing MACRO-20!"
- Any opinions expressed are not those of my employer, honest.
-