What Is The Difference ?

[army20]

Hello All,

What is the difference between "size" and "size on disk" in the file proprietis dialog ?

Thanks

[FAT64]

The "size" is the total number of "bytes" used in the file. For example, if I created a Notepad document with just the word "hello" written inside, the size would be 5 bytes.

The "size on disk" is how much hard disk space the file uses when saved. A hard drive is divided into tracks and sectors, each sector can hold 512 bytes of data. However, for reasons I won't go into, sectors are grouped together to form "clusters". One cluster is the minimum space used for a file. Windows 2000 & XP has a cluster size of 4Kbytes (8 sectors), so my original Notepad file would use 4096 bytes of hard disk space.

[army20]

That was easy, thanks

[KAndle]

Hope this explains...

638 bytes (638 bytes) size

4.00 KB (4,096 bytes) size on disk

even though the shortcut I got these numbers from is only 638 bytes in size. it still take up the default block size on the disk which is 4096. The more files you have the more space that is wasted. I only know how to make the block size smaller when formating for Linux. I'm not sure if Windows can use different size blocks. The size on disk will always be a multiple of 4096.

added

oops too slow...

[FAT64]

1 byte = 8 octets or 8 bytes = 1 octet

This doesn't make mathematical sense.

[army20]

I know I've edited my post

I wanted to ask if 1 byte = 8 bits or if 1 bit = 8 bytes.

[FAT64]

In that case, 1 byte = 8 bits.