Archive for the ‘Computer hardware’ Category.

umount: device is busy

February 3, 2010, 6:39 pm

Sometimes after mounting some nfs devices, you cannot easily un-mount them. You get some error: “device is busy”. I often get this error when I want to un-mount some shared folders like ‘/home’ and ‘/usr’.The reason is simple: the devices you are un-mouting are busy;) That’s to say some files on the mouted devices are being used by some process.

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Category: Computer hardware, Notes, 工作相关  |  Comment

Error solved: displaying java applets in IE

May 20, 2008, 5:03 pm

Instead of using MS java virtual machine, you could install Sun java virtual machine. However, you can easily get error to prevent you displaying java applets in IE. (see http://www.java.com/en/download/help/6000060700.xml)

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Category: Articles in English, Computer hardware, Modeling & Simulation, Notes  |  Comment

Recover an unrecognized Maxtor One Touch II 300GB

August 9, 2007, 8:13 pm

I got a 300GB Maxtor One Touch II external USB/Firware harddisk driver.

It has been working well. But I found the driver letter was missing this morning for no reason. I tried to check this with WinXP disk management console. It was reported ‘uninitialized’ although the capacity is correctly displayed. Damn it! I have more than 160GB useful backups on it! Of course, one may say you should have double backups, but then I should have at least two big harddisks at hand? Unfortunately,I have only one.

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Category: Computer hardware  |  Comment