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Diskpart slow with SSD after Secure Erase

Intel 320 SSD's with RAID controller:

Turn on the machine.

Run diskpart to remove the volume and put the disks into basic mode. This runs very quickly and works good.

I send the Secure Erase command to the SSD's and all the data is gone, Secure Erase is successful.

Immediately run "diskpart" to put the disks back into dynamic mode and create the volume again - this runs EXTREMELY SLOWLY.

I almost thought it was a hung forever... and then 4 minutes later slowly it went on to the next disk.

If I run diskpart to put the drives in dynamic without doing the secure erase before, it does run very quickly.

Why does doign a Secure Erase slow down diskpart so much?

Thank You.

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3 Replies
Honored Contributor II

Hello IntelGreg,

There are many factors involved in the speed at which your drive is initialized. Here are some recommendations that can help improve the functionality of the SSD in this type of situation:

- Make sure you have the most recent firmware for you Intel SSD: Intel® SSD 320 Series downloads

- Verify that you are using the most recent drivers for your motherboard and storage controller.

- Update the BIOS of your motherboard.

- Check for Windows updates, since diskpart and dynamic disks are a feature of Microsoft Windows*.




Thank you for the reply. It appears I have the latest compatible software and firmware for the various parts.


The interesting part, it's NOT slow if I run the same diskpart commands again - only right after the Secure Erase....


Thank You.

Honored Contributor II

Keep in mind that when you do a Secure Erase, a value of "0" is written to all the cells of the SSD, and all data on the drive is wiped out. The behavior of Diskpart and dynamic disk creation may be different for "new" and previously initialized drives.

Dynamic disks are different than basic disks, since they can be used by Windows to do Software RAID, and other configurations. Creation of dynamic disks may take longer than creating a basic disk, depending on the configuration you plan to use.

Diskpart and Dynamic Disks are Microsoft Windows* features, so the best source for details about this tool and the way it works is Microsoft Support.

Please review the following document from Microsoft for additional details about dynamic disks:

What Are Dynamic Disks and Volumes?

*NOTE: This link is being offered for your convenience and should not be viewed as an endorsement by Intel of the content, products, or services offered there.