Windows 7: does formatting a disk actually write zeros to it?

All we need is an easy explanation of the problem, so here it is.

According to this article from Microsoft, zeros are written to an entire disk when it is formatted (not using the quick format option) in Windows Vista and newer versions of Windows. My question is the following:

Does this also apply to Windows 7? The above article from Microsoft does not specify Windows 7 under “Applies to”, although Windows 7 is (to the best of my knowledge) a later version?

How to solve :

I know you bored from this bug, So we are here to help you! Take a deep breath and look at the explanation of your problem. We have many solutions to this problem, But we recommend you to use the first method because it is tested & true method that will 100% work for you.

Method 1

Yes, in the case of versions of Windows after Vista.

Prior to Windows Vista, a full format was the same as a quick format, but included a disk scan for bad sectors. As of Vista, this scan was replaced by writing zeroes to each sector of the drive (which in turn would reveal any bad sectors that couldn’t be written to).

Another source here related definitively to Windows 7 states:

What’s a quick format?

Quick format is a formatting option that creates a new file table on a
hard disk but does not fully overwrite or erase the disk. A quick
format is much faster than a normal format, which fully erases any
existing data on the hard disk.

Emphasis mine

I don’t know why the source you’ve provided isn’t mentioning Windows 7, but it does apply.

Evidence

Prior to formatting my SD card:

Windows 7: does formatting a disk actually write zeros to it?

Full format complete:

Windows 7: does formatting a disk actually write zeros to it?

After formatting my SD card:

Windows 7: does formatting a disk actually write zeros to it?

Note: Use and implement method 1 because this method fully tested our system.
Thank you 🙂

All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0

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