20gb drive only formatting to 15.9 GB

[iceref63]

I have a 20gb hard drive that is only formatting to 15.9 GB.  I do not see any hidden partition in either computer management or diskpart.  I know that it should be about 18.6 gb in size.  Any ideas?

[patio]

[iceref63]

Patio,

Thanks for posting the table.  Like I said in the original post, I know it's supposed to format out to about 18.6 GB but it is only formatting to about 15.9 GB, way less than what the table shows.  I am checking these drives via a usb cable using windows XP Pro on the machine checking the drives.  Disk management in XP does not show any hidden partitions nor does DISKPART utiltiy.

[patio]

How was it formatted and what format is it ? ?
Diskpart should show it correctly...

[iceref63]

used disk manager to format it.  Deleted all partitions first.  Formatted in NTFS.

[patio]

Did it ever have Linux on it that you know of ? ?

[iceref63]

It might have.  The drives came from IBM laptops with windows XP pro and, if I am not mistaken, they use linux for their OS recovery partition.

[JJ 3000]

Could be bad sectors on the disk.
Run chkdisk.

[iceref63]

Always run chkdsk with the repair option.  No luck.

[patio]

Then there's probably a hidden restore partition on there...
The only way to check this would be to track down what type of machine it came out of...
Although i still say diskpart should show it...

IDEA: DLoad and install the Free ver. of Easus partition manager and see it that picks it up...