1-the Fat must be saved totally in the Main memory,but only the I-node musst be saved in the main memory
2-with i-node faster searchind an accessing a data block
3-i-node area is only accesible by the Operating system
icore inode is work before inode. icore inode is dynamic information about the file. incore inode tranlate information or data,in other words incore inode made before inode and any manipulation or information changed in the icore inode..... inode doesnot change file information & not perform any operation on file............
An inode is a data structure on a traditional Unix-style file system such as UFS or ext3. An inode stores basic information about a regular file, directory, or other file system object. Each and every file under Linux (and UNIX) has following attributes: * File type (executable, block special etc) * Permissions (read, write etc) * Owner * Group * File Size * File access, change and modification time * File deletion time * Number of links (soft/hard) * Access Control List (ACLs) All the above information is stored in an inode. So, each file has an inode associated with it and an unique number called inode number. This number is used to look up an entry in the inode table.
File allocation table
file allocation table
FAT is a file system used by MS-DOS and other Windows-based operating systems to organize and manage files. The file allocation table (FAT) is a data structure that Windows creates when you format a volume by using the FAT or FAT32 file systems. Windows stores information about each file in the FAT so that it can retrieve the file later.
FAT : File Allocation Table.
File Allocation Table
lost cluster
file allocation table 32 bits
FAT (File Allocation Table)
File Allocation table
FAT - FAT32 - File Allocation Table