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HD loses format when swtiching HD Enclosures

By biisama ·
I've formatted a 3TB Toshiba (DT01ACA300) Internal HD with GPT on a Windows 7 machine. I am using the drive as external storage.

When the drive is in Enclosure A, 3tb is recognized. When the drive is removed from Enclosure A and put in Enclosure B, it shows up as RAW. When I put the same drive back in Enclosure A, 3tb is recognized.

So, I formatted the same drive as GPT on Enlcosure B. When the drive is in Enslosure B, 3tb is recognized. When the drive is removed from B and placed into A, the drive shows up as RAW. When I put the same drive back in B, 3tb is recognized.

So, that rules out the HD enclosures (Rosewill RX358 U3C- they work fine with other 2tb HDs formatted as MBR and are listed as supporting 3tb drives). Do you think the problem is with the Toshiba brand? (I have 2 Toshiba 3tb HDs that I've tried. Both have same problem) Or, is it the fact that the drives are 3tb?

I do not feel comfortable knowing that my 3tb internal drive will lose its formatting if I put it in a new enclosure.

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And what are the Chipsets of the Enclosures?

by HAL 9000 Moderator In reply to HD loses format when swti ...

Unfortunately 2 Gig drives are about the limit of size for external Enclosures at the moment despite what the enclosure makers say.

Anything over 2 Gig is unreliable in my experience so far.

However here I would imagine that the different enclosures have different Chipsets and they are incompatible with each other.

Col

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Reponse To Answer

by biisama In reply to And what are the Chipsets ...

A & B have no problem switching back and forth drives that are 2tb and keeping the 2tb formatted. So, that would indicate the interface chips are compatible and not the problem, I think.

The reason I buy Internal HDs and put them in enclosures, is to afford me the luxury of switching enlosures when the enclosure breaks. Not being able to remove the internal HD from the enclosure defeats the purpose.

You're right. 3TB drives are a heacdache. I think I'm just gonna RMA the 2 Toshiba drives.

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Reponse To Answer

by OH Smeg In reply to And what are the Chipsets ...

No what you are saying here is that Enclosure A & B treat 2 GIG HDD the same way.

There could very well be a Incompatibility in the way that different Chip Sets treat the larger 3 Gig drive in reading the last GIG.

Instead of using cheap Enclosures that treat the drives fitted to them badly have you ever thought of using something like an Antec Actively Cooled MX1 Enclosure?

www.antec.com/product.php?id=704915&pid=84

Col

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