Saturday, May 29, 2010

NTFS vs. FAT

To NTFS or not to NTFS—that is the question. But unlike the deeper questions of life, this one isn't really all that hard to answer. For most users running Windows XP, NTFS is the obvious choice. It's more powerful and offers security advantages not found in the other file systems. But let's go over the differences among the files systems so we're all clear about the choice. There are essentially three different file systems available in Windows XP: FAT16, short for File Allocation Table, FAT32, and NTFS, short for NT File System.




FAT16

The FAT16 file system was introduced way back with MS–DOS in 1981, and it's showing its age. It was designed originally to handle files on a floppy drive, and has had minor modifications over the years so it can handle hard disks, and even file names longer than the original limitation of 8.3 characters, but it's still the lowest common denominator. The biggest advantage of FAT16 is that it is compatible across a wide variety of operating systems, including Windows 95/98/Me, OS/2, Linux, and some versions of UNIX. The biggest problem of FAT16 is that it has a fixed maximum number of clusters per partition, so as hard disks get bigger and bigger, the size of each cluster has to get larger. In a 2–GB partition, each cluster is 32 kilobytes, meaning that even the smallest file on the partition will take up 32 KB of space. FAT16 also doesn't support compression, encryption, or advanced security using access control lists.



FAT32

The FAT32 file system, originally introduced in Windows 95 Service Pack 2, is really just an extension of the original FAT16 file system that provides for a much larger number of clusters per partition. As such, it greatly improves the overall disk utilization when compared to a FAT16 file system. However, FAT32 shares all of the other limitations of FAT16, and adds an important additional limitation—many operating systems that can recognize FAT16 will not work with FAT32—most notably Windows NT, but also Linux and UNIX as well. Now this isn't a problem if you're running FAT32 on a Windows XP computer and sharing your drive out to other computers on your network—they don't need to know (and generally don't really care) what your underlying file system is.



The Advantages of NTFS

The NTFS file system, introduced with first version of Windows NT, is a completely different file system from FAT. It provides for greatly increased security, file–by–file compression, quotas, and even encryption. It is the default file system for new installations of Windows XP, and if you're doing an upgrade from a previous version of Windows, you'll be asked if you want to convert your existing file systems to NTFS. Don't worry. If you've already upgraded to Windows XP and didn't do the conversion then, it's not a problem. You can convert FAT16 or FAT32 volumes to NTFS at any point. Just remember that you can't easily go back to FAT or FAT32 (without reformatting the drive or partition), not that I think you'll want to.



The NTFS file system is generally not compatible with other operating systems installed on the same computer, nor is it available when you've booted a computer from a floppy disk. For this reason, many system administrators, myself included, used to recommend that users format at least a small partition at the beginning of their main hard disk as FAT. This partition provided a place to store emergency recovery tools or special drivers needed for reinstallation, and was a mechanism for digging yourself out of the hole you'd just dug into. But with the enhanced recovery abilities built into Windows XP (more on that in a future column), I don't think it's necessary or desirable to create that initial FAT partition.



When to Use FAT or FAT32

If you're running more than one operating system on a single computer (see Dual booting in Guides), you will definitely need to format some of your volumes as FAT. Any programs or data that need to be accessed by more than one operating system on that computer should be stored on a FAT16 or possibly FAT32 volume. But keep in mind that you have no security for data on a FAT16 or FAT32 volume—any one with access to the computer can read, change, or even delete any file that is stored on a FAT16 or FAT32 partition. In many cases, this is even possible over a network. So do not store sensitive files on drives or partitions formatted with FAT file systems.

Source: http://freepctech.com/pc/xp/xpindex.shtml

Keyboard Shortcuts of XP

When speed counts, the keyboard is still king. Almost all the actions and commands you can perform with a mouse you can perform faster using combinations of keys on your keyboard. These simple keyboard shortcuts can get you where you want to go faster than several clicks of a mouse. You'll work faster on spreadsheets and similar documents, too, because you won't lose your place switching back and forth between mouse and keys.




Here are some of the most useful keyboard shortcuts:



Copy. CTRL+C

Cut. CTRL+X

Paste. CTRL+V

Undo. CTRL+Z

Delete. DELETE



Delete selected item permanently without placing the item in the Recycle Bin. SHIFT+DELETE

Copy selected item. CTRL while dragging an item

Create shortcut to selected item. CTRL+SHIFT while dragging an item

Rename selected item. F2

Move the insertion point to the beginning of the next word. CTRL+RIGHT ARROW

Move the insertion point to the beginning of the previous word. CTRL+LEFT ARROW

Move the insertion point to the beginning of the next paragraph. CTRL+DOWN ARROW

Move the insertion point to the beginning of the previous paragraph. CTRL+UP ARROW

Highlight a block of text. CTRL+SHIFT with any of the arrow keys

Select more than one item in a window or on the desktop, or select text within a document. SHIFT with any of the arrow keys

Select all. CTRL+A

Search for a file or folder. F3

View properties for the selected item. ALT+ENTER

Close the active item, or quit the active program. ALT+F4

Opens the shortcut menu for the active window. ALT+SPACEBAR

Close the active document in programs that allow you to have multiple documents open simultaneously. CTRL+F4

Switch between open items. ALT+TAB

Cycle through items in the order they were opened. ALT+ESC

Cycle through screen elements in a window or on the desktop. F6

Display the Address bar list in My Computer or Windows Explorer. F4

Display the shortcut menu for the selected item. SHIFT+F10

Display the System menu for the active window. ALT+SPACEBAR

Display the Start menu. CTRL+ESC

Display the corresponding menu. ALT+Underlined letter in a menu name

Carry out the corresponding command. Underlined letter in a command name on an open menu

Activate the menu bar in the active program. F10

Open the next menu to the right, or open a submenu. RIGHT ARROW

Open the next menu to the left, or close a submenu. LEFT ARROW

Refresh the active window. F5

View the folder one level up in My Computer or Windows Explorer. BACKSPACE

Cancel the current task. ESC

SHIFT when you insert a CD into the CD-ROM drive Prevent the CD from automatically playing.





Use these keyboard shortcuts for dialog boxes:



Move forward through tabs. CTRL+TAB

Move backward through tabs. CTRL+SHIFT+TAB

Move forward through options. TAB

Move backward through options. SHIFT+TAB

Carry out the corresponding command or select the corresponding option. ALT+Underlined letter

Carry out the command for the active option or button. ENTER

Select or clear the check box if the active option is a check box. SPACEBAR

Select a button if the active option is a group of option buttons. Arrow keys

Display Help. F1

Display the items in the active list. F4

Open a folder one level up if a folder is selected in the Save As or Open dialog box. BACKSPACE



If you have a Microsoft Natural Keyboard, or any other compatible keyboard that includes the Windows logo key and the Application key , you can use these keyboard shortcuts:



Display or hide the Start menu.

Display the System Properties dialog box. +BREAK

Show the desktop. +D

Minimize all windows. +M

Restores minimized windows. +Shift+M

Open My Computer. +E

Search for a file or folder. +F

Search for computers. CTRL+ +F

Display Windows Help. +F1

Lock your computer if you are connected to a network domain, or switch users if you are not connected to a network domain. + L

Open the Run dialog box. +R

Display the shortcut menu for the selected item.

Open Utility Manager. +U





Helpful accessibility keyboard shortcuts:



Switch FilterKeys on and off. Right SHIFT for eight seconds

Switch High Contrast on and off. Left ALT +left SHIFT +PRINT SCREEN

Switch MouseKeys on and off. Left ALT +left SHIFT +NUM LOCK

Switch StickyKeys on and off. SHIFT five times

Switch ToggleKeys on and off. NUM LOCK for five seconds

Open Utility Manager. +U



Keyboard shortcuts you can use with Windows Explorer:



Display the bottom of the active window. END

Display the top of the active window. HOME

Display all subfolders under the selected folder. NUM LOCK+ASTERISK on numeric keypad (*)

Display the contents of the selected folder. NUM LOCK+PLUS SIGN on numeric keypad (+)

Collapse the selected folder. NUM LOCK+MINUS SIGN on numeric keypad (-)

Collapse current selection if it's expanded, or select parent folder. LEFT ARROW

Display current selection if it's collapsed, or select first subfolder. RIGHT ARROW