operating system information management disk space allocation

@ashokkumar-cpc-wZuF7P • Oct 20, 2024

Oct 20, 2024

1.4K

Dear sir

I am ashok I am reading Achyutgodbole operating system book it is nice to read I have one doubt in information management :- in disk space allocation method ,my question is actually in FAT if the block size has 512 bytes to store or suppose 1024 bytes is the block size if I want to store 700 bytes, if block size is 512 bytes and it occupies two sector one sector A takes 512 bytes and 2 bytes for giving information about next sector the next sector B gets 188 bytes the remaining 324 bytes in sector B are kept free or this cannot be used or how can we utilize this space in that sector B; and same time the FAT entry contains the used sector or block , FAT will be giving the information stating that sector A and sector B are used, the free space left by the sector B will it be left free or how c can it be used by the operating system can u please help to get clear idea for this question .

thank u
ashok

Like 0 Replies 7

Replies

Welcome, guest

Join CrazyEngineers to reply, ask questions, and participate in conversations.

CrazyEngineers powered by Jatra Community Platform

PraveenKumar Purushothaman

@praveenkumar-66Ze92 • Jun 28, 2011

Hi Ashok,

When you see the FAT Structure, there are two types. One is FAT16 and the other is FAT32. In case of FAT32, this problem is resolved using Shared Memory allocation. 😀 The data is handled between two or more sectors and the free space is utilized by using a stop code mechanism. 😀 This makes the sharing possible with another file of lesser size or spanned large file. 😀 Hope it is clear... 😀

0
ashokkumar_cpc

@ashokkumar-cpc-wZuF7P • Jun 28, 2011

thank u so much let me go through FAT 32 and shared memory allocation if i have any doubt i will post the message

thank u

0
PraveenKumar Purushothaman

@praveenkumar-66Ze92 • Jun 28, 2011

Do post if you get more information. 😀

0
ashokkumar_cpc

@ashokkumar-cpc-wZuF7P • Jun 29, 2011

can u please explain about FAT 32 and shared memory allocation in hard disk

0
PraveenKumar Purushothaman

@praveenkumar-66Ze92 • Jun 29, 2011

Didn't you get the info from Google? Try searching, if not, I will get you the whole concept tomorrow... 😀

0
ashokkumar_cpc

@ashokkumar-cpc-wZuF7P • Jul 1, 2011

can u please explain about FAT 32 and shared memory allocation in hard disk

0
Kaustubh Katdare

@thebigk • Jul 1, 2011

ashokkumar_cpccan u please explain about FAT 32 and shared memory allocation in hard disk
I believe all the basic information about FAT 32 can be obtained from Internet. Here's Microsoft's own KB: #-Link-Snipped-# . Does it give you the information you're looking for?

0