1.5 TB hard disk detected as 1 TB only

[SoWhy]

Hi there,

I recently got a 1.5 TB Samsung hard disk. I connected it internally via S-ATA first and PPM 10 detected it correctly. I then copied my old partitions and connected the disk externally using a USB docking station. Now PPM insists that it's only a 1 TB disk and Windows XP agrees. I booted into Linux and ran testdisk which claimed the same. I then used testdisk to change the cylinder value to 182365 (size / (heads * sectors * sector size), i.e. 1.5 x 10¹² / (255 * 63 * 512)) which makes Windows recognize it as 1.5 TB disk again but PPM 10 still insists that it's only a 1 TB disk. Also, when I reconnect it to my netbook running Linux and re-starting testdisk, it again claims it's only a 1 TB disk.

Is this a BIOS issue but then why does Windows XP recognize the correct size after changing the geometry manually? Or is it an issue with PPM 10 but then why has testdisk the same problem? I am confused and I do not want to trust the disk until I can figure this out. So....any help?

TIA
SoWhy

[Paragon_Tommy]

Hello SoWhy,

Very strange. Can we get a screen shot of your Windows disk management and paragon's disk view?

[SoWhy]

I wish I had done so because I feel like a fool now. I just went to check again and now it reports the correct size just fine. I have no idea what happened