# How long does 3 Pass Secure Erase take Mac?

## How long does 3 Pass Secure Erase take Mac?

I found one estimate, based on a test with a 500 GB External Drive connected with Firewire 800, which took 18 hours 22 minutes for a 7-pass erase, yielding an estimate of 0.314 minutes per GB. My 640 GB drive might then take nearly 24 hours. At that rate, even three passes would take over 10 hours. That’s way too long.

## What is a 35 pass erase?

Devised by Peter Gutmann and Colin Plumb, it does so by writing a series of 35 patterns over the region to be erased. The selection of patterns assumes that the user doesn’t know the encoding mechanism used by the drive, and so includes patterns designed specifically for three different types of drives.

How long does it take to erase drive Mac?

Simple. A complete wipe of the drive’s partition, regardless of size, takes about 1 second. You will then have to reformat your drive, which can take around 30 minutes to an hour, depending on the speed of your computer and the format you are using.

How long does it take to secure erase SSD?

It only take about 15 seconds to erase an SSD.

### How long does it take to erase a 1TB hard drive?

According to AS, it shouldn’t take more than 5 minutes to erase a 1TB drive.

### How long does it take to wipe a 500GB hard drive?

In reality, the formatting time may be slightly different from the used space on your hard drive. How Long Does It Take to Format a 500GB Hard Drive: According to a test, we find that a 500GB hard drive takes about 8 minutes to format when selecting Quick Format, while it takes about 25 minutes under the Full Format.

How long does it take to wipe a 1TB hard drive?

How Long Does It Take to Format a 1TB Hard Drive: Performing a Quick Format on a 1TB hard drive takes about 20 minutes. If you select the Full Format, it could take you up to 1 hour.

How long does a DoD wipe take?

Calculating Time In cases where a drive with a capacity of a terabyte will be wiped using the DoD-approved nine passes of randomly written ones and zeros, it is very likely that this process will take in excess of one month of 24 hours per day processing to finish this wiping procedure.

#### How long does wiping a hard drive take?

Calculating Time While times will vary based on the factors listed above, a consumer grade, 20 gigabyte IDE hard drive, being wiped with a single pass of zeros being written to the drive, will take about an hour to complete.

#### How long does it take to wipe a 1TB SSD?

A secure erase of a generic 1 TB HDD could take around 24 hours. If the object is to prep a computer for resale and there is concern for data security it would be more practical to destroy the hard drive.

How long does a full format take 4TB?

However, a Full Format can take up to 3 hours. If this hard drive stores a chunk of data, it could take you a half day. How Long Does It Take to Format a 4TB Hard Drive: To a certain degree, 4TB is a large hard disk that will take quite a long time to format.

Why does wiping a hard drive take so long?

Writing to each bit in at least three passes takes hours. If companies and campuses have lots of disks to wipe after upgrades, they often lack the time, equipment, and will to spend hours on each disk, especially for older, smaller disks, so they destroy them.