[Fix] Can’t Convert Basic Disk into Dynamic Disk in Windows

Many Windows users have faced a strange problem while converting a basic disk into dynamic disk. Whenever they try to convert, they receive following error message:

The pack name is invalid.

Microsoft has acknowledged this issue and has posted a working solution for this problem. Actually this problem occurs when you are using Windows in a country such as China, Japan or Korea. When you install Windows, it asks you to provide a name to your computer and if you used one or more double-byte characters such as hanzi (Chinese), kanji (Japanese) or hanja (Korean) while giving name to your PC, you might face this problem.

This problem can be faced by Windows Vista, Windows 7 and Windows 8 users. If you are also facing this problem, you can follow these simple steps to fix it:

1. Open RUN dialog box by pressing Win+R keys together and type sysdm.cpl and press Enter.

2. It'll open System Properties window. Now click on "Change" button as shown in following screenshot:


3. Now type a new name for your computer and make sure it doesn't contain any double-byte character.


4. That's it. Apply the changes, restart your system and now you'll be able to convert a basic disk into dynamic disk without any problem.

Thanks to our friend "Rob Margel" for this info...


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Posted in: Troubleshooting, Windows 7, Windows 8 / 8.1, Windows Vista

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  • i want to convert dynamic disk partitions to basic.
    But the option “ Mark as active ” is hidden. i also tried using cmd and diskpart but not suceeded... please help.

  • @MD Nazir
    i had that problem once, and as far as i remember, i used partition wizard home edition bootable iso, you can use it from usb as well and try to find an option to convert the disk to a basic one, i don't remember the details

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