HD loses format when swtiching HD enclosures

[biisama]

[FONT=verdana]HD loses format when swtiching HD Enclosures
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[FONT=verdana]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.[/FONT]

 

[SNGX1275]

Don't know the answer but, what happens if you format as GPT connected internally, and then put the drive in the enclosures?

 

[biisama]

Don't know the answer but, what happens if you format as GPT connected internally, and then put the drive in the enclosures?

Good suggestion. Unfortunately, I do not have a desktop and the drives are 3.5".

Oh Well.