See how to implement the linux file system block size

On the linux system, you can use the command tune2fs, as tested below

[root@localhost test10g]# tune2fs -help
tune2fs 1.35 (28-Feb-2004)
tune2fs: invalid option -- h
Usage: tune2fs [-c max-mounts-count] [-e errors-behavior] [-g group]
    [-i interval[d|m|w]] [-j] [-J journal-options]
    [-l] [-s sparse-flag] [-m reserved-blocks-percent]
    [-o [^]mount-options[,...]] [-r reserved-blocks-count]
    [-u user] [-C mount-count] [-L volume-label] [-M last-mounted-dir]
    [-O [^]feature[,...]] [-T last-check-time] [-U UUID] device
[root@localhost test10g]# df
Filesystem      1K-blocks   Used Available Use% Mounted on
/dev/sda2       8776068  7576504  753764 91% /
/dev/sda1        497829   16303  455824  4% /boot
none          517300     0  517300  0% /dev/shm
/dev/sda5       1035660   96452  886600 10% /tmp
[root@localhost test10g]# tune2fs -l /dev/sda1|grep Block
Block count:       514048
Block size:        1024      
Blocks per group:     8192
[root@localhost test10g]# tune2fs -l /dev/sda2|grep Block
Block count:       2229018
Block size:        4096
Blocks per group:     32768

Above, Block size is the block size.

On the WINDOWS system, you can view it with the command fsutil and test it as follows:

C:\Documents and Settings\ct2 > fsutil --help
--help is an invalid parameter.
-- supported commands --

behavior     Controls file system behavior 
dirty       Manage the number of corrupted bits of the volume 
file       File specific command 
fsinfo      File system information 
hardlink     Hard link management 
objectid     object  ID  management 
quota       Quota management 
reparsepoint   Reanalysis point management 
sparse      Sparse file control 
usn       USN  management 
volume      Volume management 

C:\Documents and Settings\ct2>fsutil fsinfo ntfsinfo c:

NTFS  Volume serial number  :    0x72ccb5f2ccb5b129
 version  :             3.1
 Area number  :         0x0000000008ff8235
 The total number of clusters  :         0x00000000011ff046
 Available cluster  :         0x0000000000547b73
 The total number of reserved  :         0x0000000000000050
 Number of bytes per sector  :        512
 Number of bytes per cluster  :        4096
 each  FileRecord  The number of bytes in a segment   : 1024
 each  FileRecord  The number of clusters  : 0
Mft  Effective data length  :      0x0000000009cac000
Mft  The starting  Lcn :         0x00000000000c4df6
Mft2  The starting  Lcn :         0x00000000008ff823
Mft  Area starting  :         0x0000000001067920
Mft  Area at the end   :         0x000000000108ce60

The number of cluster bytes above is the block size.

Note: the second extended file system (second Extended Filesystem,Ext2). Ext3 (third Extended Filesystem)

man fs
    ext2  is the high performance disk filesystem used by Linux for fixed
       disks  as  well as removable media.  The second extended
       filesystem was designed as an extension of the extended file
       system (ext).  ext2 offers the best performance (in terms of
       speed and CPU usage) of the filesystems supported under Linux.
    ext3  is a journaling version of the ext2 filesystem. It is easy to
       switch back and forth between ext2 and ext3.
    ext3  is a journaling version of the ext2 filesystem. ext3 offers the
       most complete set of journaling options  available  among
       journaling filesystems.