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After it copies the disk, 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're 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
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.
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.
Run diskcopy from a drive other than the floppy disk drive, for example the C drive. If floppy disk drive1 and floppy disk drive2 are the same, diskcopy prompts you to switch disks. If the disks contain more information than the 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.
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.
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. To avoid transferring fragmentation from one disk to another, use the copy command or the xcopy command to copy your disk. Because copy and xcopy copy files sequentially, the new disk is not fragmented.
Note
You cannot use xcopy to copy a startup disk.
diskcopy exit codes:
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 the exit codes that are returned by diskcomp, you can use the ERRORLEVEL environment variable on the if command line in a batch program.
Examples
To copy the disk in drive B to the disk in drive A, type:
diskcopy b: a:
To use floppy disk drive A to copy one floppy disk to another, first switch to the C drive and then type:
diskcopy a: a:
diskpart
Applies to: Windows Server 2022, Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2019, Windows Server 2016, Windows Server 2012 R2, Windows Server 2012, and Windows Server 2008 R2, Windows Server 2008
The diskpart command interpreter helps you manage your computer's drives (disks, partitions, volumes, or virtual hard disks).
Before you can use diskpart commands, you must first list, and then select an object to give it focus. After an object has focus, any diskpart commands that you type will act on that object.
Determine focus
When you select an object, the focus remains on that object until you select a different object. For example, if the focus is set on disk 0 and you select volume 8 on disk 2, the focus shifts from disk 0 to disk 2, volume 8.
Some commands automatically change the focus. For example, when you create a new partition, the focus automatically switches to the new partition.
You can only give focus to a partition on the selected disk. After a partition has focus, the related volume (if any) also has focus. After a volume has focus, the related disk and partition also have focus if the volume maps to a single specific partition. If this isn't the case, focus on the disk and partition are lost.
Syntax
To start the diskpart command interpreter, at the command prompt type:
diskpart <parameter>
Important
You must be in your local Administrators group, or a group with similar permissions, to run diskpart.
Parameters
You can run the following commands from the Diskpart command interpreter:
Command
Description
active
Marks the disk's partition with focus, as active.
add
Mirrors the simple volume with focus to the specified disk.
assign
Assigns a drive letter or mount point to the volume with focus.
attach vdisk
Attaches (sometimes called mounts or surfaces) a virtual hard disk (VHD) so that it appears on the host computer as a local hard disk drive.
attributes
Displays, sets, or clears the attributes of a disk or volume.
automount
Enables or disables the automount feature.
break
Breaks the mirrored volume with focus into two simple volumes.
clean
Removes any and all partition or volume formatting from the disk with focus.
compact vdisk
Reduces the physical size of a dynamically expanding virtual hard disk (VHD) file.