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Re: GPT Drive not recognized on RN102

chokobanana
Guide

GPT Drive not recognized on RN102

I just purchased a 3TB external drive (2.5 inch usb powered). The drive is recognized by the NAS when formatted as MBR (2TB) but whenever I reformat the drive as GPT the NAS won't detect it. I've tried using both the front USB port as well as the back USB port. I've also tried formatting the drive as a single volume (gpt) and not creating a volume at all (gpt) but the NAS won't detect the drive using either method. If I format the drive as MBR (2TB) and reformat inside the ReadyNAS GUI it is still an MBR drive (Not GPT as I would have hoped).

 

Is GPT not supported? I'm running the latest firmware 6.6.0.

 

The log outputs this when the drive is MBR:

 

Tue Dec 13 2016 21:52:37
System: External storage device disconnected.
Tue Dec 13 2016 21:48:41
System: External storage device connected.

 

When I connect the drive as GPT nothing is output. (like if the drive was never connected)

Model: RN10200|ReadyNAS 100 Series 2- Bay (Diskless)
Message 1 of 6
sotrack
Luminary

Re: GPT Drive not recognized on RN102

Is GPT not supported?

 

This is dependent of USB adapter. Some of my USB adapters are OK with GPT, some not.

 

 

Message 2 of 6
chokobanana
Guide

Re: GPT Drive not recognized on RN102

USB adapter as in the external case of the HDD?

Meaning, purchasing a different brand may have worked better?

 

Or do you mean the USB adapter of the RN102?

Message 3 of 6
chokobanana
Guide

Re: GPT Drive not recognized on RN102

I should add that I formatted the drive as NTFS.

I also tried the connecting the drive as GPT (1 volume, 3TB) to my Synology 916+ and it detected the drive just fine.

Since RN102 detects the drive when formated as MBR I think this is software issue.

Message 4 of 6
StephenB
Guru

Re: GPT Drive not recognized on RN102


@chokobanana wrote:

USB adapter as in the external case of the HDD?

Meaning, purchasing a different brand may have worked better?

 


The external case.  Some older ones don't support GPT.  But if that works in the synology, that's not the issue for you.

@chokobanana wrote:

Since RN102 detects the drive when formated as MBR I think this is software issue.

 

 It could be.  There are some fixes in 6.6.1 beta for USB drive detection.

Message 5 of 6
chokobanana
Guide

Re: GPT Drive not recognized on RN102

Hopefully 6.6.1 will adress this issue.

The drive was manufactured on october 2016 and is a Buffalo HD-PNF3.0U3-GBD. (Released in january 2016)

Message 6 of 6
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