Formatted 160gb harddrive under XP and only had available space of 127gb

Posted on 2004-11-13
Last Modified: 2008-01-09
I just installed and formatted my new 160gb HD using windows XP and when it had finished i only had available space of 127gb, now i know you lose a bit of space due to partitions, but 33gb??

Maybe i did something wrong, any ideas??
Question by:ivandp
    LVL 6

    Accepted Solution


    Firstly, does your BIOS support drives larger than 127Gb?  If it does, you should look at:-

    How to Enable 48-bit Logical Block Addressing Support for ATAPI Disk Drives in Windows XP;en-us;303013

    If it doesn't, see if there's a BIOS update available first.

    LVL 6

    Expert Comment

    Oops, finger trouble.  That was supposed to be 137Gb...


    Expert Comment


    FAT 32 is an enhancement that came along with Windows 98 B a couple of years ago and has been refinemed some since.

    FAT 32 goes beyond the capabilities of FAT 16 by breaking the logical drive limitation of 2 gigabytes and extending it to a single logical drive capacity of 127 GB. In plain English it means that Windows 98B (OSR2) and Windows 98 can see up to 127 GB of disk space concurrently.  Windows XP still gives you the option to format in FAT32.  If you formatted with FAT32, that is why you can only see 127GB per logical drive, and may have only made 1 logical drive.
    LVL 6

    Expert Comment


    This is an XP forum, I think.

    Even XP has problems with drives > 137Gb - whether or not you're using NTFS  - hence the reference above to tjhe M$ article about 48 bit LBA
    LVL 11

    Expert Comment

    You should either install Service pack 1 or 2 to fix the problem.

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