Fat File System

NTFSD
1

HELLO TO ALL,

I have some basic questions relative to FAT file system

|--------------|----------------------------------------------------------------------|
|B | F | F |
|
|P | A | A | <---------DATA REGION---------------------------------> |
|B | T | T |
|
| | 1 | 2 |
|
|--------------|----------------------------------------------------------------------|

I am calling FSCTL_GET_VOLUME_BITMAP successfully to get the complete
bitmap of volume.

=========

Q}What does the BitMapSize equal to?
Is it the total no of clusters in the data region?
OR
Is it the total no of clusters in Whole volume (Data Region+FAT1+FAT2 + BPB )?

Q} What does the capacity (in bytes) shown by the property window of
C: Drive shows

Is it the total size of data region(in bytes)?
OR
Is it the total size of Whole volume (Data Region+FAT1+FAT2 + BPB ) in bytes?

Thanks in Advance.

2

>I am calling FSCTL_GET_VOLUME_BITMAP successfully to get the complete

bitmap of volume.

This describes the data region only.

Maxim Shatskih, Windows DDK MVP
StorageCraft Corporation
xxxxx@storagecraft.com
http://www.storagecraft.com

3

1: for data region.
2: complete volume.

-Kiran

-----Original Message-----
From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of rakesh thakur
Sent: Wednesday, June 22, 2005 3:19 PM
To: Windows File Systems Devs Interest List
Subject: [ntfsd] Fat File System

HELLO TO ALL,

I have some basic questions relative to FAT file system

|--------------|------------------------------------------------------------
----------|
|B | F | F |

|
|P | A | A | <---------DATA
REGION---------------------------------> |
|B | T | T |

|
| | 1 | 2 |

|

|--------------|------------------------------------------------------------
----------|

I am calling FSCTL_GET_VOLUME_BITMAP successfully to get the complete bitmap
of volume.

=========

Q}What does the BitMapSize equal to?
Is it the total no of clusters in the data region?
OR
Is it the total no of clusters in Whole volume (Data Region+FAT1+FAT2 + BPB
)?

Q} What does the capacity (in bytes) shown by the property window of
C: Drive shows

Is it the total size of data region(in bytes)?
OR
Is it the total size of Whole volume (Data Region+FAT1+FAT2 + BPB ) in
bytes?

Thanks in Advance.

Questions? First check the IFS FAQ at
https://www.osronline.com/article.cfm?id=17

You are currently subscribed to ntfsd as: unknown lmsubst tag argument: ‘’
To unsubscribe send a blank email to xxxxx@lists.osr.com

4

Hello Kiran,

2: complete volume.

when the drive is formated with the ntfs format the drive property window shows
different values than the same drive formatted with fat32.
capacity 106,895,872 101MB NTFS
capacity 106,048,512 101MB FAT32

What is the reason for the difference in capacity value?

On 6/22/05, Kiran Joshi wrote:
>
> 1: for data region.
> 2: complete volume.
>
> -Kiran
>
> -----Original Message-----
> From: xxxxx@lists.osr.com
> [mailto:xxxxx@lists.osr.com] On Behalf Of rakesh thakur
> Sent: Wednesday, June 22, 2005 3:19 PM
> To: Windows File Systems Devs Interest List
> Subject: [ntfsd] Fat File System
>
> HELLO TO ALL,
>
>
> I have some basic questions relative to FAT file system
>
>
> |--------------|------------------------------------------------------------
> ----------|
> |B | F | F |
>
> |
> |P | A | A | <---------DATA
> REGION---------------------------------> |
> |B | T | T |
>
> |
> | | 1 | 2 |
>
> |
>
> |--------------|------------------------------------------------------------
> ----------|
>
> I am calling FSCTL_GET_VOLUME_BITMAP successfully to get the complete bitmap
> of volume.
>
> =========
>
> Q}What does the BitMapSize equal to?
> Is it the total no of clusters in the data region?
> OR
> Is it the total no of clusters in Whole volume (Data Region+FAT1+FAT2 + BPB
> )?
> =========
>
> Q} What does the capacity (in bytes) shown by the property window of
> C: Drive shows
>
> Is it the total size of data region(in bytes)?
> OR
> Is it the total size of Whole volume (Data Region+FAT1+FAT2 + BPB ) in
> bytes?
> ========
>
> Thanks in Advance.
>
> —
> Questions? First check the IFS FAQ at
> https://www.osronline.com/article.cfm?id=17
>
> You are currently subscribed to ntfsd as: unknown lmsubst tag argument: ‘’
> To unsubscribe send a blank email to xxxxx@lists.osr.com
>
>
> —
> Questions? First check the IFS FAQ at https://www.osronline.com/article.cfm?id=17
>
> You are currently subscribed to ntfsd as: xxxxx@gmail.com
> To unsubscribe send a blank email to xxxxx@lists.osr.com
>

5

Different amount of the metadata required by different FSs.

Maxim Shatskih, Windows DDK MVP
StorageCraft Corporation
xxxxx@storagecraft.com
http://www.storagecraft.com

----- Original Message -----
From: “rakesh thakur”
To: “Windows File Systems Devs Interest List”
Sent: Thursday, June 23, 2005 3:11 PM
Subject: Re: [ntfsd] Fat File System

Hello Kiran,

> 2: complete volume.

when the drive is formated with the ntfs format the drive property window shows
different values than the same drive formatted with fat32.
capacity 106,895,872 101MB NTFS
capacity 106,048,512 101MB FAT32

What is the reason for the difference in capacity value?

On 6/22/05, Kiran Joshi wrote:
>
> 1: for data region.
> 2: complete volume.
>
> -Kiran
>
> -----Original Message-----
> From: xxxxx@lists.osr.com
> [mailto:xxxxx@lists.osr.com] On Behalf Of rakesh thakur
> Sent: Wednesday, June 22, 2005 3:19 PM
> To: Windows File Systems Devs Interest List
> Subject: [ntfsd] Fat File System
>
> HELLO TO ALL,
>
>
> I have some basic questions relative to FAT file system
>
>
> |--------------|------------------------------------------------------------
> ----------|
> |B | F | F |
>
> |
> |P | A | A | <---------DATA
> REGION---------------------------------> |
> |B | T | T |
>
> |
> | | 1 | 2 |
>
> |
>
> |--------------|------------------------------------------------------------
> ----------|
>
> I am calling FSCTL_GET_VOLUME_BITMAP successfully to get the complete bitmap
> of volume.
>
> =========
>
> Q}What does the BitMapSize equal to?
> Is it the total no of clusters in the data region?
> OR
> Is it the total no of clusters in Whole volume (Data Region+FAT1+FAT2 + BPB
> )?
> =========
>
> Q} What does the capacity (in bytes) shown by the property window of
> C: Drive shows
>
> Is it the total size of data region(in bytes)?
> OR
> Is it the total size of Whole volume (Data Region+FAT1+FAT2 + BPB ) in
> bytes?
> ========
>
> Thanks in Advance.
>
> —
> Questions? First check the IFS FAQ at
> https://www.osronline.com/article.cfm?id=17
>
> You are currently subscribed to ntfsd as: unknown lmsubst tag argument: ‘’
> To unsubscribe send a blank email to xxxxx@lists.osr.com
>
>
> —
> Questions? First check the IFS FAQ at
https://www.osronline.com/article.cfm?id=17
>
> You are currently subscribed to ntfsd as: xxxxx@gmail.com
> To unsubscribe send a blank email to xxxxx@lists.osr.com
>

—
Questions? First check the IFS FAQ at
https://www.osronline.com/article.cfm?id=17

You are currently subscribed to ntfsd as: unknown lmsubst tag argument: ‘’
To unsubscribe send a blank email to xxxxx@lists.osr.com