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Discussion Starter · #1 ·
My bro bought me some new HD and it's suppose to be 256 GB but only 31.5 GB's showing up! My comp is a HP Pavillion Media Center 2002 120GB We don't know what's going wrong. First we put the cd in, installed the drivers and we never saw the hd under my computer and then he tried to boot the cd since he said that's what we were suppose to do and my comp just won't boot that cd. Anyways he moved something on the HD and it still didn't work but when I woke up the next morn I turned on my comp and went to my computer, there it was but it only had 31.5 GBs. So now we don't know why it won't give me the rest of my space. :(
 

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Check in BIOS that your HD is not limited to 32 GB.
Check Disk Management Console to see if the whole disk space is seen by OS. Maybe your HD is partitioned and the rest of the space is unallocated.
 

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Also, this just might apply:

The 65,536 Cylinder (31.5 GiB / 33.8 GB) Barrier

This barrier is relatively recent, and along with a couple of others began showing up during the spring and summer of 1999. Although this barrier is often referred to as the 32 GB barrier similar to the one immediately above, that description is a bit of a misnomer.

This particular barrier is caused by some versions of the Award BIOS not being able to handle drives having more than 65,535 cylinders. Most hard disk parameters use 16 heads and 63 sectors, which works out to a capacity of approximately 33.8 GB or 31.5 GiB. It is our understanding that on or about June of 1999, this problem had been corrected by Award. This is somewhat of an unusual barrier given that most, if not all, hard disks above 8 GB no longer use discrete geometry for access, instead Logical Block Addressing is used along with a flat sector number from 0 to one less than the number of sectors on the drive. No doubt this 65,536 cylinder problem must somehow be related to some older code that was being used, or a compatibility issue with older hard drives (or both). From everything we have been able to examine, this issue was limited to a few machines that relied upon old Award BIOS code that was subsequently corrected with an update.

http://www.dewassoc.com/kbase/hard_drives/hard_drive_size_barriers.htm

Also be sure he's using NTFS instead of FAT32.
 

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Discussion Starter · #6 ·
My bro went into BIOS and the memory showed 31 gb on my 250 gb hard drive. How do I get it back to 250 gbs? The hd showed 250 gb in the BIOS berfore it was partitioned. At that point he couldn't see it in windows. But after he partitioned it it showed up in windows but only at 31 gbs
 

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Really you had two problems. The first one we will have to get back to. What did your brother "move" on the HD? There are jumpers that will limit a HD to 32GB. Since you had a 120GB HD in there your BIOS shouldn't be the limiting factor.
 

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Discussion Starter · #15 ·
He said yes he's sure. It only showed up in BIOS at first though. Now its showing up in BIOS and windows as 31.5gb. I just don't get it. Technology sux
 

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Have you looked at the drive in disk management?

Use the settings for 16 Heads. Here are the jumper settings: http://www.hitachigst.com/tech/techlib.nsf/techdocs/4DD4DCCA11DE5EB186256D6A0061C8A8/$file/Installposter.pdf
 

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Discussion Starter · #18 ·
He thinks he has looked at it in disk management but he wants to know how to get to disk management.
And
Yes NTFS, Windows XP, SErvice packs 1 & 2. Before it was formatted it was 250gb and after it was where it is now.
 

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General question-- why is Bios showing it as 31.5? If that's the case then what Windows has done isn't important. As mentioned before it appears that the original drive was 120GB which BIOS read correctly.

tiera: what is the make and model of the drive? How does your brother have it hooked up? Same cable as the other HD? Are both drives on CS or do you have master and slave settings.

You might try resetting the MB jumper to clear CMOS. It's usually next to the battery.

Edit: sorry I see it's a Hitachi
 
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