You cannot convert a basic disk to a dynamic disk when the computer name contains double-byte characters

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SYMPTOMS

On a computer that is running Windows 7 or Windows Vista, you cannot convert a basic disk into a dynamic disk. When you try to convert a basic disk, you receive an error message that resembles the following:

Package name is invalid

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CAUSE

This issue may occur if the computer name contains double-byte characters, such as hanzi (Chinese), kanji (Japanese), or hanja (Korean).

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WORKAROUND

To work around this issue, use single-byte characters for the computer name.

To rename the computer, follow these steps:

Click Start
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, right-click Computer, and then click Properties.
Under Computer name, domain, and workgroup settings, click Change settings.
On the Computer Name tab, click Change.
Type a new name under Computer name, and then click OK.

Note Do not type double-byte characters.