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CS609 System Programming Assignment 4 Solution Fall 2013

Question:

Ahwas installed 64 bit operating system on his PC. Unfortunately, his system crashed and could not boot even in the safe mode. He has two equal partitions of his 120 GB hard drive. He has an important data on his secondary partition. He has a DOS bootable USB drive with FAT16 structure. Is it possible for Ahwas to access his important DATA from hard drive and copy to USB drive through available DOS bootable drive? Give logical reason for your answer. 

Note: Google the different possibilities for the given scenario assuming that it happen with you. Implement all founded possibilities on your system then suggest a feasible solution for Ahwas within steps. You also can use any other utility within the scenario limitations.

Solution: 

FAT16 is the original file system used in DOS and Windows 3.x, and was originally only designed for use on relatively small partitions. It’s been revised so that it’s possible to make a FAT16 partition up to 4GB in size, but no more than that. FAT32 is a revised version of FAT16 that can be used to create much larger partitions and has native support for long filenames, and was introduced with Win98. Both FAT16 and FAT32 are also backwards- and cross-compatible with older versions of Windows and other OSes. However, both FAT16 and FAT32 suffer from many drawbacks: they have weak error recovery and no built-in file security, just to name two. NTFS, which was introduced with Windows NT, is much more secure and robust than FAT16 or FAT32, and offers better recovery from errors. NTFS is now offered on Windows 2000, Windows XP and Windows 2003 Server, although all of the above OS’s can also use FAT16 or FAT32. It’s generally recommended that NTFS be used except when backwards compatibility is urgently needed.

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