HD loses format when swtiching HD enclosures

By biisama
Mar 22, 2013
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  1. HD loses format when swtiching HD Enclosures

    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.
  2. SNGX1275

    SNGX1275 TS Forces Special Posts: 12,415   +281

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

    biisama Newcomer, in training Topic Starter

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

    Oh Well.


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