Slack Space



Slack space is a form of internal fragmentation, which is wasted space on your hard disk. When a file is written to disk it is stored in the "beginning" of the cluster. A cluster is defined as a set of logically contiguous sectors and the smallest amount of disk space that can be allocated to store the file.
Rarely equal or match between the available space in the cluster and the number of bytes in the file. The remaining bytes in the cluster is not used, then the name of the slack space.
Slack space usually occurs in the file system that uses 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 approximated by multiplying the number of files to half the size of a cluster. Example, a 5000 personal computer that stores files in a file system that uses a cluster size of 4 kilobytes will have approximately 5000 x 2 MB ~ = 10000 KB. On a large file server, slack space and even reached the size of tens of gigabytes.

Comments

Post a Comment

Popular posts from this blog

EXE file structure

Image
I 'll try to explain how a structure file extension .EXE. EXE is a common file extension indicates an executable file ( program) in the DOS , OpenVMS , Microsoft Windows , Symbian , and others. In addition to the executable program , many EXE files contain other components called resources, such as bitmaps and icons which the executable program to be able
Read more

Filesystem Structure

Image
For this time I will explain about a system file structure there are some that I will explain , among others, are : FAT16 FAT32 NTFS EXT2 EXT3 starting from the first , which is FAT16   FAT16 we start from the first FAT . What is FAT ? FAT File System that is used in Windows Operating System . FAT 's name comes from the use of tables that focus on areas where information is empty or may not be used . To limit the size of the table , the disk space allocated to files in hardware sector groups are adjacent , so-called developing cluster. When disk drive , the maximum number of clusters also
Read more

Introduction Maltego

Image
What is maltego ? Maltego are tools for OSINT (Open Source Intelligence Gathering ) , so OSINT is a method of searching the information available to the public and then analyzed and used for certain purposes maltego also an open- source intelligence and forensics application . This allows for the mining and gathering information and presenting this information in a meaningful way .
Read more