On a system with a single floppy drive and no hard drive... How do I copy a file from a floppy to another floppy?

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On a system with a single floppy drive and no hard drive... How do I copy a file from a floppy to another floppy?

Postby jarreboum » 2017-12-30 @ 18:14

How? I tried to use xcopy, but it always tells me that the "file cannot be copied onto itself". I must be missing something.

I have DOS 6.22 install disks, DOS 6.22 installed on a floppy, and files I want to move around on regular floppies.
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Re: On a system with a single floppy drive and no hard drive... How do I copy a file from a floppy to another floppy?

Postby derSammler » 2017-12-30 @ 18:23

Just use B: as destination. If B: is not present, MS-DOS will use A: instead but tells you to swap the floppy disk.

Or you could just set up a RAM drive.
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Re: On a system with a single floppy drive and no hard drive... How do I copy a file from a floppy to another floppy?

Postby jarreboum » 2017-12-30 @ 19:22

Right, I got it. It's a rather odd way of doing things, I would have never thought of using B:, given the lack of B:.

Thank you.
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Re: On a system with a single floppy drive and no hard drive... How do I copy a file from a floppy to another floppy?

Postby DosFreak » 2017-12-31 @ 03:27

I remember using diskcopy back in the day. Looks like the ver that comes with MS-DOS 6 includes a switch to only use ram for the file copy instead of the HD
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Re: On a system with a single floppy drive and no hard drive... How do I copy a file from a floppy to another floppy?

Postby jarreboum » 2017-12-31 @ 09:27

I thought about using diskcopy as well, but I don't think it has a per file switch unfortunately :(
[edit] diskcopy was present in very early versions of MSDOS (2.11) and didn't need a HDD to transfer the files back then. Everything was done in RAM. I don't know about the later iterations.
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Re: On a system with a single floppy drive and no hard drive... How do I copy a file from a floppy to another floppy?

Postby mrau » 2017-12-31 @ 22:40

what do You want to do exactly? copy the files? have the same layout on medium? preserve boot sector? it seems diskcopy does a 1:1 copy only; it should be easy to write a program that stores a sector of data in memory to write it on another medium :>
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Re: On a system with a single floppy drive and no hard drive... How do I copy a file from a floppy to another floppy?

Postby derSammler » 2018-1-01 @ 09:15

diskcopy works with B: as a virtual drive as well. I only know this because I read the PC-DOS manual and that's even the official way to do it with only one drive.
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Re: On a system with a single floppy drive and no hard drive... How do I copy a file from a floppy to another floppy?

Postby jarreboum » 2018-1-01 @ 12:13

That's good to know! I don't remember ever having a manual with my DOS, even though I own original 6.22 disks. Probably lost by my folks.
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Re: On a system with a single floppy drive and no hard drive... How do I copy a file from a floppy to another floppy?

Postby Azarien » 2018-1-01 @ 14:18

Whole DOS works with virtual B: drive. You can just type in b:, confirm and then pretend your only drive is B: instead of A:.
This can be useful because DOS remembers separate "current" paths for A and B drives.
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Re: On a system with a single floppy drive and no hard drive... How do I copy a file from a floppy to another floppy?

Postby Jo22 » 2018-1-17 @ 14:48

The phantom B: drive was introduced in DOS 3.2 , IIRC.
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