New Drive showing only 1.7TB instead of 4TB

[Robert Heller]

At Thu, 6 Aug 2020 22:13:09 +0200 "Ubuntu user technical support,  not for general discussions" <ubuntu-users at lists.ubuntu.com> wrote:

> 
> On Thu, 6 Aug 2020 01:52:20 -0700, Noah wrote:
> >Disklabel type: dos
> >SATA Version is:  SATA 3.1, 6.0 Gb/s (current: 1.5 Gb/s)
> 
> Hi,
> 
> Ian and Volker already explained it ;). However, I'm not sure that you
> simply can migrate from MBR to GPT.
> 
> "Disklabel type: dos" is for MBR.
> 
> Regarding to the "1.5 Gb/s", the drive obviously is connected by
> SATA less than version 3, so I wonder if the motherboard's BIOS could
> cause issues when using GPT. All modern "UEFI" mobos are providing SATA
> version 3, while old legacy BIOS mobos tend to provide SATA 2 only. It's
> not the version of SATA that might be a problem, but the legacy BIOS
> might be the showstopper. Maybe you own a UEFI mobo. It's possible that
> it has got SATA 2 and 3 connectors.
> 
> Just hearsay about GPT issues when using legacy BIOS. I don't have got
> experiences, since I'm using a modern UEFI equipped mobo, but anyway
> stay with MBR ;).

I am using GPT and 2 TB disks with a mobo with a legacy BIOS. Works just fine. 
The mobo is new enough to support 3Gbs SATA.

> 
> Regards,
> Ralf
> 

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