Recovery practical.floppy.dd

in this time i try to recovered file,

 

file in advance dd

Magic Number

the term magic number has multiple meanings. It could refer to one or more of the following:

• A constant numerical or text value used to identify a file format or protocol; for files, see List of file signatures
• Distinctive unique values that are unlikely to be mistaken for other meanings (e.g., Globally Unique Identifiers)
• Unique values with unexplained meaning or multiple occurrences which could (preferably) be replaced with named constants

Tipe File

I try to discuss CDR type file, what is CDR? CDR is type file from Corel Draw, if we drawing used Corel Draw then the file CDR extension.

Detail information for CDR file extensions :

primary association       : Corel

company                           : Corel Corporation

file classification             : Graphic

mime types                     : application / cdr, application / coreldraw, application / x-cdr, application / x-coreldraw, picture / cdr, image / x-cdr, zz-application/zz-winassoc-cdr

identify the hex character     : 52 49 46 46, ASCII: RIFF

ID program    : CDraw4, CorelDRAW.Graphic.8, CorelDRAW.Graphic.9, CorelDRAW.Graphic.10, CorelDRAW.Graphic.11

Unallocated Space

Unallocated Space is available disk space that is not allocated to any volume. The type of volume that you can create on unallocated space depends on the disk type. On basic disks, you can use unallocated space to create primary or extended partitions. On dynamic disks, you can use unallocated space to create dynamic volumes

Slack Space

Slack space or sometimes referred to as file slack is the area between the end of a file and end of the last cluster or sector used by the file in question. Area is an area that will not be used again to store the information there, so the area is "wasted" useless. Slack space is common in file systems that use a large cluster size, while the file system that uses a small cluster size can organize the storage media more effectively and efficiently. Amount of wasted disk space can be thought is estimated by multiplying the number of files (including the number of directories) with half the size of a cluster. For example, a 10 000 personal computer that stores files in a file system that uses a cluster size of 4 kilobytes will have approximately 10 000 x 2 MB ~ = 20000 KB. On a large file server, slack space and even reached the size of tens of gigabytes.

struktur filesystem

FAT16

file system that uses the allocation unit that has a limit of up to 16-bit, so it can store up to 216 units of allocation (65536 pieces). This file system has a capacity limit of up to 4 Gigabyte sizes only. Allocation unit size used by the FAT16 partition depends on the capacity that was about to be formatted: if the partition size is less than 16 megabytes, then Windows will use the FAT12 file system, and if the partition size larger than 16 megabytes, then Windows will use the FAT16 file system. The following table contains information any operating system that supports the FAT16 file system.

MBR (Master Boot Record)

master boot record (MBR) is a type of boot sector popularized by the IBM Personal Computer. It consists of a sequence of 512 bytes located at the first sector of a data storage device such as a hard disk. MBRs are usually placed on storage devices intended for use with IBM PC-compatible systems.

The MBR may be used for one or more of the following: