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### Copy Sectors

A tool for creating disk images, clones, writing images back to disk, and copying different disk objects. For changes to take effect in OS you may probably have to reload computer. See Volume locking also.

#### Parameters of Copying

Button | Purpose
--- | ---
`Device` | Select Device, Logical disk (volume), Image as source/destination sectors
`Partition` | Select Partition as source/destination sectors (use `Device` button to select the disk before),
| To select the entire current device/disk/RAID double click the topmost item in the partition list
`File` | Use file as source bytes / a destination (alternatively `Device` · `Open Image` to use file as sectors)
`Editor` | Use the object opened in the Disk Editor window as source bytes
`Selected` | Use selected block of the Disk Editor object as source bytes

Source fields `Start Sector`, `End Sector`, `Number of Sectors`, `Start Byte`, `End Byte`, `Size in Bytes` are filled in automatically on source selection by buttons. Fields may be altered manually in order to specify a portion of the source object to copy. If the source is a file or `Editor` object then fields are specified in bytes.

Destination field `Start Sector` is also filled in automatically on destination selection by buttons `Device`, `Partition`. `Start Sector` is specified relative to the beginning of the selected destination object. `Start Sector` of the source always corresponds to `Start Sector` of the destination (regardless copying direction).

The field `Continue from` specifies position to continue writing to a file. When copy in `reverse` direction copying starts previos to the specified position and goes backward (e.g., if set to `10` then sector `9` will be copied first and copying will go to the beginning).

`Reverse copy`: copy backward (from the end to the beginning) to create an image of a disk with problems.

#### Resuming Copying

To continue copying to a disk/partition in forward direction increase `Start Sector` of the source and the `Start Sector` of the destination by the same value equal to the number of the previously copied sectors.

To continue copying to a disk/partition in backward direction only decrease `End Sector` / `Number of Sectors` of the source.

To continue writing to a file (creating an image) just set only the field `Continue from`, but do not change the source fields.

Set Device I/O Parameters to handle I/O errors during copy (number of retries, blocks to skip, etc.).

If RAID is constructed then it may be used as a source/destination.

Using the `Device` button you may select a file (disk image) as a source or a destination. Then you may specify parameters available for a disk only.

When `Editor` or `Selected` is used as a source then some errors (such as invalid cluster or sector numbers) are silently ignored.