TOC · Work · Menu · Drive · Select drive

## Device Selection

Before searching and opening a volume or disk editing you should either open a device via dialog box "Select device/disk" or construct RAID.

Logical disks/volumes / DOS Services should be selected only if the volume is not damaged (e.g. to recover deleted files from healthy volume).

Uncheck `Show partitions` checkbox to disable auto open and search partitions.

Use `Parameters` button to set device I/O error handling.

### Windows OS

• IO R/W File | Use ReadFile/WriteFile functions to access device
• IOCTL SCSI | Use SCSI driver request (SCSI timeout can also be set)
Overlapped | Allow I/O Dialog box popping up before I/O completes. It seems to be useless and is not recommended to use.

### DOS

ATA Interface | Use direct device access via ports (for IDE or SATA disks in IDE mode timeout can be set)
BIOS Services | Use BIOS functions to access device
DOS Services | Use DOS functions to access logical disk
use DMA | Supported in Professional Edition only

### Linux

If some specific devices are not listed in the dialog box you may open them using the option `Open image` and manually entering device path, e.g. `/dev/mmcblk0`.