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is HDDErase the best way to secure erase HDD; compare to Win8 Push Button Reset

Is HDDErase the best and most secure way to delete/destroy data on a modern HDD so that it absolutely cannot be recovered (outside of possibly in a forensic setting)? If not, what is the best and most secure option?

How does the security of Windows 8's Push Button Reset's 'Reset your PC' feature (the 'thorough' option) compare to HDDErase (or whatever program might be better and more secure)?

Since HDDErase (and many other similar utilities) uses the drive's built-in Secure Erase command, how can I make sure that my drive has that feature?

Thanks!

I will also add that I need a program that can securely erase a SATA HDD that is connected via an external docking station (USB 2.0). Can HDDErase do this? If so, is it the best and most secure way, or is there anything better and more secure (or otherwise that you'd recommend instead)?

Here you are: http://eraser.heidi.ie/

As long as a program overwrites the whole sector, including cluster tips it's securely erased..you only need to write once.

Reset your PC in Windows 8 does not completely erase your hdd. It reinstalls Windows but deletes your files, settings, and apps except for the apps that came with your PC. HDDerase completely wipes your hdd.

Are you sure about Push Button Reset not completely erasing the drive? According to this, the 'thorough' method does wipe it, and does so similarly to disk wiping utilities.

From the article:

'The first, called Reset Your PC, removes all of your personal data, apps, and settings from the PC, and then reinstalls Windows to its factory-fresh, day-1 condition.' - It is Windows 8 that is wipe out and reinstalled and not the whole drive content.

From Wiki:

HDDerase is a freeware utility that securely erases data on hard drives using the security erase unit command built into the firmware of Parallel ATA and Serial ATA drives manufactured after 2001.

According to the text between the 2nd and 3rd images in the 'Using PC Reset' section of that article, the 'thorough' option does a 3-pass wipe of the HDD and is similar to data wiping utilities. Although it doesn't say it invokes the secure erase function like HDDErase does, how would a 3-pass wipe of the drive with Push Button Reset not wipe the whole drive content and completely erase the drive?

With HDDerase the 'WHOLE' drive is securely erased using the security erase command in the firmware. With W8 thorough reset, Windows erases and formats the hard drive partitions on which Windows and personal data reside. Other partitions may not be erased like non-Windows partition which is not visible to Windows or possibly Windows partition in a way not related to the Windows (not sure about this though).

Windows thorough option will write random patterns to every sector it erases on the drive (several passes), overwriting any existing data just like other 'erasing' software like DBAN, etc. so that the data are not easily recoverable without the use of special equipments.

So if all I have are the default partitions - C and Recovery, Push Button Reset will do a fine job securely wiping any sensitive data/files on C?

Although I have not tried the reset option (not much into Windows 8 right now), I think a thorough reset will do a fine job as far as security , much more advisable than just a simple delete or a format if you have sensitive data you do not want to be easily recovered.

Thanks. Is it likely that the data can be more easily recovered if I use the Push Button Reset thorough reset than if I use a different wiping utility?

It is really hard to compare which wiping utility is the best or is better than the other. The best approach depends on whether how sensitive is the data (e.g. secret government docs, company trade secrets, personal data, etc). Also, how well you trust the beneficiary of the drive (e.g. friend, relative, charity (unknown). For really really sensitive data, the recommended is to physically destroy the drive.

If you are giving the computer to a trusted friend or relative and you want to include the Windows 8 OS, a simple reset would probably suffice but if to charity maybe a thorough reset is recommended.

If it is just the drive you are giving, you can use HDDerase,DBAN or any hdd erasing utility, to wipe the drive. I can not recommend which one since they differ in their approaches and have their own pros and cons.

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Learning Objective

• Discuss the chemical properties of hydrogen’s naturally occurring isotopes.

Key Points

• Protium is the most prevalent hydrogen isotope, with an abundance of 99.98%. It consists of one proton and one electron. It is typically not found in its monoatomic form, but bonded with itself (H₂) or other elements.
• Deuterium is a hydrogen isotope consisting of one proton, one neutron and one electron. It has major applications in nuclear magnetic resonance studies.
• Tritium is a hydrogen isotope consisting of one proton, two neutrons and one electron. It is radioactive, with a half-life of 12.32 years.

Terms

• diatomicConsisting of two atoms.
• isotopeForms of an element where the atoms have a different number of neutrons within their nuclei. As a consequence, atoms of the same isotope will have the same atomic number, but a different mass number.

Properties of Isotopes of Hydrogen

Hydrogen has three naturally occurring isotopes: ¹H (protium), ²H (deuterium), and ³H (tritium). Other highly unstable nuclei (⁴H to ⁷H) have been synthesized in the laboratory, but do not occur in nature. The most stable radioisotope of hydrogen is tritium, with a half-life of 12.32 years. All heavier isotopes are synthetic and have a half-life less than a zeptosecond (10^-21 sec). Of these, ⁵H is the most stable, and the least stable isotope is ⁷H .

Protium

¹H is the most common hydrogen isotope with an abundance of more than 99.98%. The nucleus of this isotope consists of only a single proton (atomic number = mass number = 1) and its mass is 1.007825 amu. Hydrogen is generally found as diatomic hydrogen gas H₂, or it combines with other atoms in compounds—monoatomic hydrogen is rare. The H–H bond is one of the strongest bonds in nature, with a bond dissociation enthalpy of 435.88 kJ/mol at 298 K. As a consequence, H₂ dissociates to only a minor extent until higher temperatures are reached. At 3000K, the degree of dissociation is only 7.85%. Hydrogen atoms are so reactive that they combine with almost all elements.

Deuterium

²H, or deuterium (D), is the other stable isotope of hydrogen. It has a natural abundance of ~156.25 ppm in the oceans, and accounts for approximately 0.0156% of all hydrogen found on earth. The nucleus of deuterium, called a deuteron, contains one proton and one neutron (mass number = 2), whereas the far more common hydrogen isotope, protium, has no neutrons in the nucleus. Because of the extra neutron present in the nucleus, deuterium is roughly twice the mass of protium (deuterium has a mass of 2.014102 amu, compared to the mean hydrogen atomic mass of 1.007947 amu). Deuterium occurs in trace amounts naturally as deuterium gas, written ²H₂ or D₂, but is most commonly found in the universe bonded with a protium ¹H atom, forming a gas called hydrogen deuteride (HD or ¹H²H).

Chemically, deuterium behaves similarly to ordinary hydrogen (protium), but there are differences in bond energy and length for compounds of heavy hydrogen isotopes, which are larger than the isotopic differences in any other element. Bonds involving deuterium and tritium are somewhat stronger than the corresponding bonds in protium, and these differences are enough to make significant changes in biological reactions. Deuterium can replace the normal hydrogen in water molecules to form heavy water (D₂O), which is about 10.6% denser than normal water. Heavy water is slightly toxic in eukaryotic animals, with 25% substitution of the body water causing cell division problems and sterility, and 50% substitution causing death by cytotoxic syndrome (bone marrow failure and gastrointestinal lining failure). Consumption of heavy water does not pose a health threat to humans. It is estimated that a 70 kg person might drink 4.8 liters of heavy water without serious consequences.

The most common use for deuterium is in nuclear resonance spectroscopy. As nuclear magnetic resonance (NMR) requires compounds of interest to be dissolved in solution, the solution signal should not register in the analysis. As NMR analyzes the nuclear spins of hydrogen atoms, the different nuclear spin property of deuterium is not ‘seen’ by the NMR instrument, making deuterated solvents highly desirable due to the lack of solvent-signal interference.

Tritium

³H is known as tritium and contains one proton and two neutrons in its nucleus (mass number = 3). It is radioactive, decaying into helium-3 through beta-decay accompanied by a release of 18.6 keV of energy. It has a half-life of 12.32 years. Naturally occurring tritium is extremely rare on Earth, where trace amounts are formed by the interaction of the atmosphere with cosmic rays.

Heavier Synthetic Isotopes

⁴H contains one proton and three neutrons in its nucleus. It is a highly unstable isotope of hydrogen. It has been synthesized in the laboratory by bombarding tritium with fast-moving deuterium nuclei. In this experiment, the tritium nuclei captured neutrons from the fast-moving deuterium nucleus. The presence of the hydrogen-4 was deduced by detecting the emitted protons. Its atomic mass is 4.02781 ± 0.00011 amu. It decays through neutron emission with a half-life of 1.39 ×10⁻²² seconds.

⁵H is another highly unstable heavy isotope of hydrogen. The nucleus consists of a proton and four neutrons. It has been synthesized in a laboratory by bombarding tritium with fast-moving tritium nuclei. One tritium nucleus captures two neutrons from the other, becoming a nucleus with one proton and four neutrons. The remaining proton may be detected and the existence of hydrogen-5 deduced. It decays through double neutron emission and has a half-life of at least 9.1 × 10⁻²² seconds.

⁶H decays through triple neutron emission and has a half-life of 2.90×10⁻²² seconds. It consists of one proton and five neutrons.

⁷H consists of one proton and six neutrons. It was first synthesized in 2003 by a group of Russian, Japanese and French scientists at RIKEN’s RI Beam Science Laboratory, by bombarding hydrogen with helium-8 atoms. The helium-8’s neutrons were donated to the hydrogen’s nucleus. The two remaining protons were detected by the “RIKEN telescope”, a device composed of several layers of sensors, positioned behind the target of the RI Beam cyclotron.

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http://en.wikipedia.org/wiki/Hydrogen_isotopes
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http://en.wiktionary.org/wiki/diatomic
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