13 March 2011

PARTITION

Hello frnds,

               This post is of more basics, many readers mail me about to give more discriptiion about partition. so, this post  is on partition.


                                                                     PARTITIONS




There are two type of partition


1-dos partion- ms family (windows xp,vista,nt,etc)

2-non dos partition - x family (unix ,solaris,mac os,novell-11 etc)


#In dos partion there r two type of partition

1-primary partition
2-extended partion-(logical partition)


extended part. is nothing but it is collection of logical partion.


##bios stand for basic input out system

#A DRIVE IS RESERED FOR FLOPPY DISK

#B DRIVE IS FOR RAM

for this reason our partition start from c drive


so total no of partiion in dos with cdrom-24

and without cd rom-23


#In nondos partion there r two type of partition

1-primary partition(a1,a2,a3,a4)[four partition r possible]


2-extended partition -either(a2,a4)(fixed)

logical partiton depends on the harddisk

there r 2 types of hard disk

1-IDE(SATA,BATA,PATA)
2-SCSI(normal scsi,ultra scsi)


SATA-data tranfer serially
PATA--data tranfer parallel
bata-nonreliable

ide-integrated device electronics
scsi-small computer system interface


scsi-highly reliable,costily,hot suitable(temperature)

ide-nonreliable,lowcost


scsi r used in high config server


ide-in hdd logical partition always start from a5 and as a5,a6--------a63(a1,a2,a3,a4 r reserved for primary partion

scsi-it start partion form a5 and upto a15


so maximum partion in non dos

ide-4+59+1=64
 
scsi=4+11+1=16


And in next post i will try to explain the architecture oh HD.
  

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