[cctalk] Re: Booting from B: (Was: Getting QRST files onto

2023-03-02 Thread Fred Cisin via cctalk
I sent this before, but it didn't show up on the list; Part 1; Which versions of DOS let you boot off B: ? Obviously, NO command that you run in DOS (which would be after it has booted), will change the boot sequence, which is before DOS is present. Nor will such a change last through a boot

[cctalk] Re: Booting from B: (Was: Getting QRST files onto

2023-03-02 Thread Fred Cisin via cctalk
Resending Part 2 BTW, for the parameters for DRIVER.SYS, you can abbreviate the /t:80 /s:9 to "/F:2" (and later, "/F:720") /0 was "360K" /1 was "1.2M" /2 was "720K" anybody remember the numbers for 8"? /d:2 meant you wanted the logical drive to use the third physical drive, /d:3 meant you wa

[cctalk] Re: Booting from B: (Was: Getting QRST files onto

2023-03-02 Thread Ali via cctalk
> anybody remember the numbers for 8"? This is the official KB from MS on the topic: Standard Floppy Disk Formats Supported by MS-DOS === Article ID: 75131 - View products that this article applies to. This article was

[cctalk] Re: Booting from B: (Was: Getting QRST files onto

2023-03-02 Thread Chuck Guzis via cctalk
On 3/2/23 11:02, Ali via cctalk wrote: >> anybody remember the numbers for 8"? > > This is the official KB from MS on the topic: > > Standard Floppy Disk Formats Supported by MS-DOS > Japanese MS-DOS (used on NEC computers, mostly) used 1024 byte sectors in 8", 5.25" and 3.5" media. In fact, m

[cctalk] Re: Booting from B: (Was: Getting QRST files onto

2023-03-02 Thread Fred Cisin via cctalk
It is indeed strange that, MICROS~1 never seems to acknowledge the existence of the NEC variant. And yet, it made sense to have the same disk format parameters for three sizes of disk. Unfortunately, the otherwise excellent table leaves out the lines for DRIVER.SYS and FORMAT specifiers (if

[cctalk] Using Gotek's to emulate RX50's.

2023-03-02 Thread Chris Zach via cctalk
Seems like it should be simple, but it is not. I have a pair of Goteks with the Flaashfloppy code and each one has a USB with 400k RX50 images on it. Both are set to drive 2, and a standard 40 pin floppy crossover cable allows me to emulate a pair of drives. Now, I want to replace the RX50 dr

[cctalk] Re: Using Gotek's to emulate RX50's.

2023-03-02 Thread Bjoren Davis via cctalk
Chris, I, too, tried a similar thing. It mostly worked until there was a need to switch quickly between the two drives (booting the diagnostics, for example).  Then it worked strangely. What I believe may be going on is that the Pro is relying on the fact that, although there appear to be 2