XP doesnt read entire HD size

By christy123
Jul 15, 2007
  1. I am trying to set up a 400 gb seagate hard drive on presario 1710nx desktop. Bios does show the true size but XP reads it as 131 gb...any suggestions?


    ZWERVER TS Rookie Posts: 55

    Hi, wich xp you try to install??? SP1, try it whit SP2... should show the reale size of HDD

    ZWERVER TS Rookie Posts: 55

    I have god the same problem with windows XP without SP.
  4. christy123

    christy123 TS Rookie Topic Starter

    I have the old xp disc( pre-sp1)...i did install sp2 ..but even then it shows the same size
  5. christy123

    christy123 TS Rookie Topic Starter


    ZWERVER TS Rookie Posts: 55

    the old xp without sp shows only 131 gig, you have to find xp whit SP1 or SP2 within, otherwise try it with partition magic. u can resize partition after installation of windows xp. succes.

    sorry for my english.

    if u have any questions, please.
  7. christy123

    christy123 TS Rookie Topic Starter

    you are didnt work ...partion magic does see everything


  8. zipperman

    zipperman TS Rookie Posts: 1,179   +7

    Re Partition Magic

    Did you actually buy this and only format your 400 as 1 partition ?
    Or are you only reading C in My Computer ?
    You only need PMagic after to change 1 into 2 or 3.
    So How many partitions do you have ? Where are you getting the size
    reading ?
    You have to read and total all partitions.
    It will be less than 400,but not much.1 MB is 1032 bytes.
    HD's are measure a MB as 1000.

    My 160 is measured as 156 GB.My 3 partition total.
  9. almcneil

    almcneil TS Guru Posts: 1,277

    What Windows shows you is the size the paritition(s) you have on your HDD. If you want to see more of your HDD, increase your default partition size or add more partitions from the unparitioned space on your HDD.
  10. Ph30nIX

    Ph30nIX TS Rookie Posts: 243

    No one seems to have hit the problem.

    Windows SP1 does not support 48-bit LBA. 48-bit LBA is REQUIRED to access hard disk space over 137gb. This means that in sp1, a 400gb hdd will only show 137gb.

    To FIX it, just install SP2 and the rest of your hard disk will become accessable.

    Just google 48bit LBA for more info.
  11. christy123

    christy123 TS Rookie Topic Starter

    i first installed xp ( pre-sp1)..then installed ..nothing happened...followed that with sp2 install..still no luck...

    although PM sees all 400 gb but i would prefer not to use it..
  12. christy123

    christy123 TS Rookie Topic Starter

    i did a clean install with xp....all it can read is 131 gb

    ...there are no other partitions or any unused hd

  13. Ph30nIX

    Ph30nIX TS Rookie Posts: 243

    I assumed you hadnt screwed up the partitioning, but maybe your bios doesnt support 48-bit LBA. I know i had trouble with my 500gb sata HDD and did it through administrator tools to format it. This was the only way possible.

    Go control panel > admin tools > computer managment > storage > disk management .

    Just try muck around there

    ZWERVER TS Rookie Posts: 55

    Nice! You welcome!
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