Formatting an External HD as Mac OS Extended (Journaled)

I am having a challenge formatting my external hard drive in the Mac OS Extended (Journaled) format. From reading the forums I found out that I can not copy my iMovie events to the external HD unless it is formatted as Mac OS Extended (Journaled). I have a Sans Digital Towerstor external HD enclosure with 2 Seagate 1.5TB hard drives in it. I have been using this setup formatted as FAT with no issues. That is until I started running out of HD space on my 24" iMac. After trying unsuccessfully yo copy my iMovie events to the external HD I found out that it was formatted incorrectly. I have since made copies of all my information and set the external hard drives to a Raid 0 configuration so I can format both drives.
I tried many times to format my external HD's in the Mac OS Extended (Journaled) with no success. I kept receiving the error "Partition failed with the error: File system formatter failed." I read some additional articles that suggested I try the Partition tab as opposed to the Erase tab in the Disk Utility. I was able to successfully format the drives as Mac OS Extended (Journaled).
Since this external drive is meant as a redundant backup I changed the Sans Digital Towerstor to a Raid 1 configuration so there is a mirror image of one of the drives. It would not recognize the drive after I set it back to Raid 1 so I tried to repartition the main drive again using Mac OS Extended (Journaled). I received the same error as I did before..."Partition failed with the error: File system formatter failed."
I need to have the drives in the Towerstor as a mirror backup of each other as I have a lot of important information. Any adivec you can give on how to partition these drives as Mac OS Extended (Journaled) in a Raid 1 configuration would be most appreciated.
Thank you for you time and input.

Thank you for your response. I was able to successfully format the drives Extended journaled when they were out of the raid configuration. I was not able to format as Extended (not journaled) in the Raid configuration.

Similar Messages

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    hello
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    andreasmarx wrote:
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  • Is it safe to format ANY external drive to Mac OS Extended?

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  • Odd problem with partitioning the disk-- it says it needs to be a single Mac OS Extended (Journaled) volume, but it already is? (Screenshots in post)

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  • Greeting,  I want to reformat my external hard drive using Mac OS Extended (Journaled, Encrypted ) but before formatting it, I want to make sure that if I loose the hard drive or the hard drive get stolen, no one will be able to retrieve or recover the in

    Greeting,
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    I think FileVault is used to encryp internal hard drive but I wanna encrypt an external hard drive with Mac OS Extended Journaled Encrypted which is completely different!

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