Opening a physical disk means opening the entire medium, as it is attached to the computer, e.g. WinHex relies on Windows being able to access the drive. Opening a logical drive means opening a contiguous formatted part of a disk (a partition) that is accessible under Windows as a drive letter. There is an optional raw mode for optical drives that allows to read from audio CDs and also the complete 2352-byte sectors on data CDs (CD-ROM and Video CDs) that contain error correction codes. On most computer systems you can even access CD-ROM and DVD media. controlled by the operating system) or physically (controlled by the BIOS). You may access a disk either logically (i. Disks consist of sectors (commonly units of 512 bytes). The Disk Editor, that is part of the Tools menu, allows you to access floppy and hard disks below file system level.
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