Commands Copy Log File Floppy Disk
Remarks. Using disks Diskcopy works only with removable disks, such as floppy disks.
You cannot use diskcopy with a hard disk. If you specify a hard disk drive for drive1 or drive2, diskcopy displays the following error message: Invalid drive specification Specified drive does not exist or is nonremovable The diskcopy command prompts you to insert the source and destination disks and waits for you to press any key on the keyboard before continuing.
After copying, diskcopy displays the following message: Copy another diskette (Y/N)? If you press Y, diskcopy prompts you to insert source and destination disks for the next copy operation. To stop the diskcopy process, press N.
If you are copying to an unformatted floppy disk in drive2, diskcopy formats the disk with the same number of sides and sectors per track as are on the disk in drive1. Diskcopy displays the following message while it formats the disk and copies the files: Formatting while copying. Disk serial numbers If the source disk has a volume serial number, diskcopy creates a new volume serial number for the destination disk and displays the number when the copy operation is complete. Omitting drive parameters If you omit the drive2 parameter, diskcopy uses the current drive as the destination drive. If you omit both drive parameters, diskcopy uses the current drive for both. If the current drive is the same as drive1, diskcopy prompts you to swap disks as necessary. Using one drive for copying If drive1 and drive2 are the same, diskcopy prompts you to switch disks.
If you omit both Drive parameters and the current disk drive is a floppy disk drive, diskcopy prompts you each time you need to insert a disk in the drive. If the disks contain more information than available memory can hold, diskcopy cannot read all of the information at once. Diskcopy reads from the source disk, writes to the destination disk, and prompts you to insert the source disk again. This process continues until you have copied the entire disk. Avoiding disk fragmentation Because diskcopy makes an exact copy of the source disk on the destination disk, any fragmentation on the source disk is transferred to the destination disk. Fragmentation is the presence of small areas of unused disk space between existing files on a disk. A fragmented source disk can slow down the process of finding, reading, or writing files.
To avoid transferring fragmentation from one disk to another, use copy or xcopy to copy your disk. Because copy and xcopy copy files sequentially, the new disk is not fragmented. Warning. You cannot use xcopy to copy a startup disk. Understanding diskcopy exit codes The following table lists each exit code and a brief description. Exit code Description 0 Copy operation was successful 1 Nonfatal read/write error occurred 3 Fatal hard error occurred 4 Initialization error occurred To process exit codes returned by diskcomp, you can use the errorlevel on the if command line in a batch program.
For an example of a batch program that processes exit codes, see diskcomp in Related Topics.
I've followed instructions from two different helpful threads to set up a Virtual Machine that has an MS-DOS 6.22 environment. I'm using a trial version of Parallels desktop 6 for MAC. I found threads telling me how to set up the environment, create a virtual hard disk, format it to be bootable. I've done all that successfully. I'm stuck, however, on getting files from the MAC environment into this virtual machine. I read several threads about renaming the.hdd file to a.dmg file, and then using Finder to copy the files to it.
I've tried that. When I double click on the renamed file, I receive this error message: THE FOLLOWING DISK IMAGES COULDN'T BE OPENED. DOSVM-0.dmg (Reason: not recognized). I also tried connecting the VM CD-ROM virtual drive to a disk image of the folder that contains the files that I wish to copy to the virtual hard drive.
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The VM boot messages tell me that the CD-ROM virtual drive is letter 'R'. I can change to drive 'R', but when I execute the DIR command, I receive this error: CDR103: CROM not High Sierra or ISO-9660 format reading drive R Abort, Retry Fail? The files that I want to copy are a Clipper application executable, and its associated dbf and ntx files. If I can get this to work, I will buy a copy of Parallels desktop.
Thanks for any help you can provide. I've just set up a DOS 6.22 VM and I've managed to get all files across using either a USB floppy drive floppy disk images. I actually installed DOS from disk images. If you have a disk image in.IMG or.DMG then you should just be able to rename to.FDD for Parallels to recognize it. So, depending on how many files you have, you could create floppy-sized images in OS X, rename to.FDD and attach to your VM. If you have files on floppies already, you could get a cheap USB FDD from a well known auction site; I paid 99p for mine ). That's interesting.
I'm glad you got there in the end. I'm not sure I have an answer to your last question as CDs / DVDs I burn in OS X are readable on Windows machines (I have several physical / virtual machines and I always check after burning that discs can be read). I must admit, though, that Im not totally clear about filesystems that are used when discs are burned on various machines (ISO 9660, Joliet, UDF, etc). I guess your DOS VM strictly expects ISO 9660 (depending on driver loaded at the time) and OS X doesn't use that by default, yet uses another that Windows understands.? I'd be interested to know how you're maximising your DOS memory under parallels: I started a thread here but no responses yet (. Still not 100% of the way there Regarding your memory question, I didn't worry about it. The Clipper application uses only DOS standard memory.
IIRC, thats 640K. The virtual machine has 1GB of memory. The Clipper application shows free memory as 136K, so I believe it is not aware of anything over the 640K. Curiously, when I run the Clipper application on my Windows XP machine, it shows 199K free.
I still have one problem to resolve. How can I get a file out of the virtual machine for the odd occasion when I must edit a file to correct a bad value? DOS does not seem to be able to write to a CD. Even though I have the DOS.img file from which I copied DOS still linked to the floppy, I receive a 'not ready' error when I try to write to the floppy. I'm surprised at how difficult this is. My situation is opposite. I originally used over 100 DOS 1.44 floppy disks attached to my Mac using a USB external floppy drive.
Copy Floppy Disk To Cd
Now that DOS windows are not supported by Parallels, I moved my DOS files into the DOS Prompt in my Windows VM by going to START - RUN - COMMAND. So in this command prompt, the files work fine. But now I want to go the other direction - from the files under the command prompt back to either a floppy disk from the USB floppy drive or directly to my desktop to run the files under a program called: Boxer, with is a DOS emulator for the Mac. But all my DOS files for the last 20+ years are all residing in Parallels under the command prompt. It was easy to put the files there. But now, how to I retrieve them out of there?
Thank you in advance.