You can simply delete all partitions, then recreate and format as needed.
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I have replaced a Windows 10 HDD with a larger drive. I want to use the old OS HDD as pure data. What do I have to do to de-commission the HDD as a bootable drive?
You can simply delete all partitions, then recreate and format as needed.
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How about the boot record?
You could also use diskpart to clean the disk.
https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/clean
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This link may be useful:
https://www.tenforums.com/tutorials/85819-erase-disk-using-diskpart-clean-command-windows-10-a.html
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