Monthly Archives: February 2010

XP/Vista cannot load CD driver

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If you have a problem that your CD/DVD-ROM cannot be seen in my computer or exclamation mark on CD in device manager and you can do nothing about it, it can be fixed.

How come does this issue happen? conflict happened when you have >1 CD drivers related installed. It might be from CD/DVD burning app, such as Nero Burning ROM, Roxie, or daemon app like Virtual CD, MagicISO and such.

How to fix: First, uninstalling anything won’t help, neither will updating. What you have to do is getting into Registry editor (start | “regedit”)

Then, find “LowerFilters” and/or “UpperFilters” and delete them. Look carefully, you have to delete only ones in HKLH\System\CurrentControlSet\Control\Class\{4D36E966-E325-11CE-BFC1-08002BE10318} whose Class key is CDROM. However, you don’t have to worry much if you delete in others, you might have to restart more than once since Windows will have to detect and install the hardware driver again.

After deleted those 2 keys, just restart once. Your CD/DVD will come alive.

Popularity: 3% [?]

TeraCopy – the solution to slow multiple copies

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If you face situations, such as, very very slow copy files when you drag a file at a time to another drive or NAS, you might want to try this tool out. It does integrate to your regular work flow without an interrupt since you can just basically do the same—drag & drop again and again. Teracopy will catch that and put in the queue automatically.

TeraCopy - Queue

I dragged and dropped files twice, an above figure was what I got. TeraCopy put the second batch on queue waiting for the first batch to finish first. This way is the most efficient way to do so and I constantly got around 40MB/s over gigabit LAN while I practically couldn’t achieve this if using only Windows Explorer. As you might already notice, Explorer will share throughput for each, but, in practice, Windows couldn’t share that efficiently. The speed will decrease dramatically over the time.

Enough said, Teracopy is such a nice alternative to stock Windows Explorer copy handler. As of yet, I have no disadvantage of having Teracopy. It is that cool. oh better yet, free version is more than enough!

Note: There are quite a number of similar applications like this, such as, SuperCopier, FastCopy, etc. If I have a chance to try them and they are better, I’ll surely update. Also, if you have experienced them, I would love to hear too.

SuperCopier2.2: People claimed that it gives better performance than Teracopy, but for me, it lacks of a queue feature. Therefore, it doesn’t qualify for me. As shown below, overall transfer speed over gigabit LAN is <10MB/s which is what we normally get with stock copy handler.

supercopier22

Popularity: 25% [?]