chapter 3
Download
Skip this Video
Download Presentation
Chapter 3

Loading in 2 Seconds...

play fullscreen
1 / 27

Chapter 3 - PowerPoint PPT Presentation


  • 59 Views
  • Uploaded on

Chapter 3. Disks and Formatting. Outcomes. Describe the structure of a disk Differentiate between internal and external commands Use the FORMAT command with various fixed and variable parameters Use LABEL and VOL commands. Disk Formatting. Physical Formatting

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Chapter 3' - mortimer-coulon


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
chapter 3

Chapter 3

Disks and Formatting

G. DeRoest

outcomes
Outcomes
  • Describe the structure of a disk
  • Differentiate between internal and external commands
  • Use the FORMAT command with various fixed and variable parameters
  • Use LABEL and VOL commands

G. DeRoest

disk formatting
Disk Formatting
  • Physical Formatting
    • Sequentially numbered tracks and sectors are created
  • Logical Formatting
    • File system organization to keep track of files stored on the disk

G. DeRoest

slide5

Physical FORMATTING

512 BYTES

G. DeRoest

slide6

000

001

010

011

100

G. DeRoest

slide7

Logical FORMATTING

Cluster

G. DeRoest

a file
A File

011001110101000011111100000000000000000000011110101000101101010101010010100011111010101000101000111111000

G. DeRoest

a file1
A File

011001110101000011111100000000000000000000011110101000101101010101010010100011111010101000101000111111000

G. DeRoest

disk formatting1
Disk Formatting
  • Sector - 512 bytes of floppy disk space
  • Cluster – 1 or more sectors grouped together for access by the file system
  • Cluster overhang – space remaining within a cluster, not used by a saved file

G. DeRoest

cluster overhang
Cluster Overhang

312 bytes of wasted space

200 byte file

512 byte cluster

G. DeRoest

slide13

Boot Record

Root Directory

FAT #1

FAT #2

Data Storage

G. DeRoest

fat vfat fat32
FAT, VFAT, FAT32
  • File Allocation Table
    • 65,536 clusters max
    • 2.1 GB disk partition
    • 512 root directory entries
  • Virtual FAT
    • Windows 95
    • Supporting long file names
  • 32 bit FAT
    • Windows 95 B , Windows 98
    • 2 terabyte disk partition
    • 64,000+ root directory entries

G. DeRoest

fat components
FAT Components

G. DeRoest

practical fat
Practical FAT

G. DeRoest

slide18
NTFS
  • Secure file system
  • More efficient storage
  • Faster access
  • Journaling provides better recovery
  • File compression and encryption
  • Quotas

G. DeRoest

slide19
NTFS

G. DeRoest

slide20
NTFS

G. DeRoest

hard disk organization
Hard Disk Organization

Primary 1

Primary 2

Primary 3

Primary 4

Extended Partition

MBR

512 bytes

Logical Partitions

Boot Sector

G. DeRoest

format com
FORMAT.COM
  • External command
  • Located at C:\WINDOWS\SYSTEM32\FORMAT.COM

G. DeRoest

format com1
FORMAT.COM /?

Formats a disk for use with Windows 2000, XP, Vista.

FORMAT volume [/FS:file-system] [/V:label] [/Q] [/A:size] [/C] [/X]FORMAT volume [/V:label] [/Q] [/F:size]FORMAT volume [/V:label] [/Q] [/T:tracks /N:sectors]FORMAT volume [/V:label] [/Q] [/1] [/4]FORMAT volume [/Q] [/1] [/4] [/8]

volume - Specifies the drive letter (followed by a colon), mount point, or volume name.

/FS:filesystem Specifies the type of the file system (FAT, FAT32, or NTFS).

/V:labelSpecifies the volume label.

/Q Performs a quick format.

/C Files created on the new volume will be compressed by default.

/X Forces the volume to dismount first if necessary. All opened handles to the volume would no longer be valid.

/A:size Overrides the default allocation unit size. Default settings are strongly recommended for general use.NTFS supports 512, 1024, 2048, 4096, 8192, 16K, 32K, 64K.FAT supports 512, 1024, 2048, 4096, 8192, 16K, 32K, 64K, (128K, 256K for sector size > 512 bytes).FAT32 supports 512, 1024, 2048, 4096, 8192, 16K, 32K, 64K, (128K, 256K for sector size > 512 bytes). Note that the FAT and FAT32 files systems impose the below restrictions on the number of clusters on a volume:

FAT: Number of clusters <= 65526 FAT32: 65526 < Number of clusters < 268435446

Format will immediately stop processing if it decides that the above requirements cannot be met using the specified cluster size.

NTFS compression is not supported for allocation unit sizes above 4096.

/F:sizeSpecifies the size of the floppy disk to format (160, 180, 320, 360, 640, 720, 1.2, 1.23, 1.44, 2.88, or 20.8).

/T:tracksSpecifies the number of tracks per disk side.

/N:sectorsSpecifies the number of sectors per track.

/1 Formats a single side of a floppy disk.

/4 Formats a 5.25-inch 360K floppy disk in a high-density drive.

/8 Formats eight sectors per track.

G. DeRoest

format com2
FORMAT.COM

C:\> FORMAT E:

C:\> FORMAT E: /Q

C:\> FORMAT E: /V:CIS140

C:\> FORMAT E: /FS:FAT32

C:\> FORMAT E: /U -- Discontinued

G. DeRoest

slide26
VOL

Displays the disk volume label and serial number, if they exist.

VOL [drive:]

C:\> VOL

C:\> VOL C:

C:\> VOL B: -- Error

G. DeRoest

label
LABEL

Creates, changes, or deletes the volume label of a disk.

LABEL [drive:][label]

C:\> LABEL E:

C:\> LABEL E:DATA

C:\> LABEL E:DATA DISK

G. DeRoest

ad