WD Passport 4TB drives don't support WRITE SAME command

Re:WD Passport 4TB drives don't support WRITE SAME command by outworlder on Thursday March 26, 2020 @03:01PM (#22696715)

> If not supporting WRITE SAME turns out to be a security issue, it's a bug in the operating system.

Is it though? There is probably a big drawback in terms of resource consumption if this is not supported. Not all environments may be ok with this.

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Re:WD Passport 4TB drives don't support WRITE SAME command by codys on Thursday March 26, 2020 @03:27PM (#22696987)

That sounds like a performance issue, not a security issue?

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Re:WD Passport 4TB drives don't support WRITE SAME command by HelloNurse on Thursday March 26, 2020 @03:37PM (#22697099)

The (potential) security issue is that the operating system fails to clear disk space, possibly incorrectly assuming it has actually been cleared.

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Re:WD Passport 4TB drives don't support WRITE SAME command by cornishpixels on Thursday March 26, 2020 @04:00PM (#22697329)

Except that it receives an error, so if it's assuming that, it's wrong.

This command is not mandated to be supported. Therefore, if an OS assumes it is supported, that's an OS problem, not the drive.

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Re:WD Passport 4TB drives don't support WRITE SAME command by rowanG077 on Thursday March 26, 2020 @09:00PM (#22699584)

I don't see how this could occur. Either you do WRITE SAME and it works or it doesn't and you have to manually issue WRITE commands.

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