Re: [Freedos-user] FDD issue

2021-08-01 Thread ZB
On Sat, Sep 19, 2020 at 12:15:04PM -0400, dmccunney wrote: > > completed lately my DOS machine with additional 1.2 MB 5,25" FDD for > > occasional use of my old diskettes. So I have 3,5" FDD as drive A: and > > 5,25" FDD as drive B: now. > > > > But there is a problem: I can only access the drive

Re: [Freedos-user] FDD issue

2020-09-20 Thread Harald Arnesen
dmccunney [20.09.2020 01:36]: > I have feelers out to folks who also have old hardware. I suspect I > can solve the problem by throwing money at it, and shipping the > Seagate drives to a contractor who can extract the contents and save > it to a USB flash drive. Once that's done, the old XT

Re: [Freedos-user] FDD issue

2020-09-19 Thread ZB
On Sat, Sep 19, 2020 at 07:36:04PM -0400, dmccunney wrote: > > http://www.malinov.com/Home/sergeys-projects/xt-cf-lite > > Not a solution for me. The XT clone is an *XT* clone. That's an IDE > CF Adaptor card, and the old XT clone doesn't have IDE slots. It > predates IDE. It's just its

Re: [Freedos-user] FDD issue

2020-09-19 Thread dmccunney
On Sat, Sep 19, 2020 at 12:34 PM ZB wrote: > On Sat, Sep 19, 2020 at 12:15:04PM -0400, dmccunney wrote: > > > My old 32 bit desktop has a half height combo 3.5"/5.25" floppy drive. > > It was originally seen as drives A: and B:, and which was seen as > > which was controlled by a jumper setting

Re: [Freedos-user] FDD issue

2020-09-19 Thread ZB
On Sat, Sep 19, 2020 at 04:28:00PM +0200, Eric Auer wrote: > About your missing 10 kB: That might be extra driver > data, extra BIOS data, a virus, depends. Just telling > DOS to use them anyway will not be the solution. You > could use DEBUG to see what is in those 10 kB. I browsed memory using

Re: [Freedos-user] FDD issue

2020-09-19 Thread ZB
On Sat, Sep 19, 2020 at 07:19:46PM +0200, Eric Auer wrote: > > Hi again :-) > > >>> > >>> https://retrocomputing.stackexchange.com/questions/1452/only-drive-a-detected-with-two-floppy-disk-drives > >> > >> It says controllers after 2003 tend to no longer support > >> more than one drive at

Re: [Freedos-user] FDD issue

2020-09-19 Thread Eric Auer
Hi again :-) >>> >>> https://retrocomputing.stackexchange.com/questions/1452/only-drive-a-detected-with-two-floppy-disk-drives >> >> It says controllers after 2003 tend to no longer support >> more than one drive at the same time. From when is yours? >> The computer mentioned on stackexchange

Re: [Freedos-user] FDD issue

2020-09-19 Thread ZB
On Sat, Sep 19, 2020 at 05:04:10PM +0200, Eric Auer wrote: > Any memory allocated BEFORE DOS starts will be shown as > "there is less than 640k of memory". For example extra > data used by BIOS extensions, a bootable MEMDISK, some > tools which load before DOS to provide LBA support on >

Re: [Freedos-user] FDD issue

2020-09-19 Thread ZB
On Sat, Sep 19, 2020 at 12:15:04PM -0400, dmccunney wrote: > My old 32 bit desktop has a half height combo 3.5"/5.25" floppy drive. > It was originally seen as drives A: and B:, and which was seen as > which was controlled by a jumper setting on the drive. That went away > in an emergency

Re: [Freedos-user] FDD issue

2020-09-19 Thread dmccunney
On Sat, Sep 19, 2020 at 9:26 AM ZB wrote: > > completed lately my DOS machine with additional 1.2 MB 5,25" FDD for > occasional use of my old diskettes. So I have 3,5" FDD as drive A: and > 5,25" FDD as drive B: now. > > But there is a problem: I can only access the drive A: - never both drives >

Re: [Freedos-user] FDD issue

2020-09-19 Thread Eric Auer
Hi! > You mean "extra driver data" not shown by "mem"? Or BIOS data within 640 KB? Any memory allocated BEFORE DOS starts will be shown as "there is less than 640k of memory". For example extra data used by BIOS extensions, a bootable MEMDISK, some tools which load before DOS to provide LBA

Re: [Freedos-user] FDD issue

2020-09-19 Thread ZB
On Sat, Sep 19, 2020 at 04:28:00PM +0200, Eric Auer wrote: > About your missing 10 kB: That might be extra driver > data, extra BIOS data, a virus, depends. Just telling > DOS to use them anyway will not be the solution. You > could use DEBUG to see what is in those 10 kB. You mean "extra driver

Re: [Freedos-user] FDD issue

2020-09-19 Thread Eric Auer
Hi! If you can only access the 1.2 or 1.44 MB drive, but not both at the same time, you may have to use a different cable or different jumper settings on the drives themselves. It is also possible that you have a mainboard which supports only one driver, but that would probably only happen with

[Freedos-user] FDD issue

2020-09-19 Thread ZB
Hello, completed lately my DOS machine with additional 1.2 MB 5,25" FDD for occasional use of my old diskettes. So I have 3,5" FDD as drive A: and 5,25" FDD as drive B: now. But there is a problem: I can only access the drive A: - never both drives on a whim. So to access 5,25" drive I have to