the file structure devices

04/06/2020

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Structure

File system is the destination to store and recovery data, depend towards the operating system it may FAT (File Allocation Table) or NEW TECHNOLOGY FILE SYSTEM (New Technology file system). Compare with BODY FAT and NEW TECHNOLOGY FILE SYSTEM file system there are numerous feature big difference in file framework, Storage Components and data file name, record date and time, protection feature

File composition

Rely to the mixture bit of the entries inside the actual BODY FAT structure for the disk. BODY FAT file system has many different variations like BODY FAT 12, FAT 16, BODY FAT 32. Difficulties physical design components of EXCESS FAT file system will be:

Reserved place (volume start sector)- range from the data inside the file system category

File portion table ” contain the main and back up FAT composition

Data area- contain the cluster which allocated store record and directory site content

Generally there normally two FATs (FAT1 and FAT2) in a EXCESS FAT file system however the exact volume of FAT and total size of FAT want determine in the boot sector. If digital forensic trader need identify the data file name, size, start treat of the file content and also other metadata, they require check the directory site entry inside the file allocate table

NTFS is common file system for the windows COMPUTER, NTFS have better metadata support and data framework than BODY FAT file system, contrary to FAT file system NTFS do not have special design all the essential data is allocated since files. The first sixteen sectors happen to be boot record, disk autographs and table of primary partitions. The middle of the NTFS file system is the MFT (Master File Table) it keeps the record all the document and folder in the NTFS volume. File name begin with $ will be MFT placed metadata document.

The following table demonstrating the major system files of NTFS system and their capabilities.

File brand
File function
$ MFT
Master file table, each MFT record is 1024 bytes lengthy
#MFTMirr
Back up of MFT
$LogFile

The document used for system recovery and integrity $Volume

Identify information about NFT edition and volume level name $AtterDef

Attribute data $BitMap

Track the allowance of 8-10 cluster $Boot

Contain the zone boot sector and footwear code $BadClus

Bad bunch information in the partition $Secure

Secure info of the data file

Storage Components and document name

The NTFS and FAT file-system both keep your data inside the cluster, nevertheless the NTFS make use of smaller bunch size this means the NTFS can retail store more data. As we discuss before NEW TECHNOLOGY FILE SYSTEM use Grasp file Desk but FAT use directory site entries and file allowance table, when the forensics buyer exam the NFTS drive they can get file details from zero sectors. there are 3 attribute important for the forensic analysis $STAND_INFORMATION, $FILE_NAME and $DATA attribute. Each of the file term and directory information are in these three attribute. BODY FAT file system your data won’t be record after reserved area and FAT areas, also same extract sector after info area when the forensic entrepreneur exam BODY FAT file system they want check the hide data during these sectors. In FAT file system the entire file will save underneath long data file name

File day and time

When the forensic buyer exam folders system they want careful about the file time and period stamps. NEW TECHNOLOGY FILE SYSTEM store the file’s particular date and time in UTC (Coordinated Universal Time) but FAT stores the file upon computer neighborhood time.

Reliability

BODY FAT file system simply cannot encryption type internal, the only way to secure is definitely external program. Compare with BODY FAT file system NEW TECHNOLOGY FILE SYSTEM have been superior their security alarm, NFTS have access control and file security. The record only can access after the user login.

data file data file name

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