Microsoft is experimenting with a boot optimization, which could find its way into one of the upcoming Windows 10 versions. At least there are first indications for such a feature in Windows 10 20H1. In addition, clearer command options seem to be implemented.
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Friday the next insider preview of Windows 10 20H1, build 18975, was released. I had reported in the blog post Windows 10 Insider Preview Build 18975 (20H1) released. WalkingCat looked at the help of the defrag command in builds 18970 and 18975 and compared it, as shown in a (now deleted tweet).
Windows 10 Build 18970 still has the usual defrag info, as it is also displayed in current versions. However, there are already new switches compared to the current Windows 10 version 1903.
A new entry can be found in the help page:
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defrag /bootoptimize
whose purpose is to optimize the speed of the boot process under Windows. I hadn't seen this option before (but I may have missed it). For build 18975 the following output will be displayed.
The help page provides more entries for different options, whose names are more meaningful than the single letter abbreviations. So /L has been extended by /Retrim for SSD drives.
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