Solid-State vs. Traditional Hard Drives
Posted by Tom Greer on January 5, 2009 in Netbook Market
Netbooks are available with either solid-state drives (SSDs) or traditional hard drives. (MSI has just announced a new hybrid netbook, model U115, that incorporates both.) Laptop users are familiar with hard drives, but for most, SSDs are a new animal. This article explores the advantages and disadvantages of SSDs in comparison to hard drives.
Hard drives are mechanical devices. The platters spin thousands of times per minute. The read/write heads float over the top and bottom of each platter. The heads are attached by arms to a spindle motor which positions them over the proper tracks of the platter.
A solid-state drive is an electronic component. SSDs have no moving parts.
Solid-state drives have a number of advantages over hard drives:
- More reliable due to not having any moving parts
- Less likely to sustain damage if netbook is dropped
- Require less power, meaning batteries last longer
- Generate less heat
- Silent
- Can outperform hard drives, especially in read access times.
Please note that these are generalities. There are several different types of SSDs – each with their own strengths and weaknesses. If you are interested in the details, Wikipedia explores this in great depth.
There is a common perception that the performance of SSDs is poorer than hard drives. This certainly was true in the early models of SSDs. However, recent technology improvements now yield SSDs that outperform hard drives. Notebook Review published an article that compares a SanDisk 32GB SSD to a hard drive. The SSD blows away the hard drive’s performance across the board.
With features this good, why are we still using hard drives?
Hard drives do have a couple of strengths over SSDs:
- On a cost per gigabyte basis, hard drives are a *lot* less expensive.
- Hard drives outperform the low-cost type of SSDs
- Microsoft Windows handles SSDs ineffectively
The last bullet point is the reason why you see almost all Windows-based netbooks configured with hard drives. On the other hand, Linux-based netbooks may be packaged with either type of storage device.
However, the primary reason why hard drives have not been overwhelmingly replaced by SSDs is cost.
SSDs are becoming less and less expensive. At the same time, performance and reliability continue to improve.
This ultimately makes hard drives dinosaurs. It’s just a matter of time.
2008 Trend: Netbook OS Linux to XP
Posted by Tom Greer on December 30, 2008 in Netbook Market
Back in January of this year, the netbooks available were almost exclusively Asus Eee PCs. In the beginning, they all ran Linux.
This trend worried Microsoft immensely. This little niche was gaining a lot of popularity. What would happen if customers found out that Linux could actually be used by normal people? With Vista already unpopular in many circles, there could be serious consequences if people learned that Linux actually provided the functionality that they needed. Read the rest »
Verizon 3G (EVDO) Working On My Linux Aspire One
Posted by Tom Greer on September 19, 2008 in Acer Netbooks
After a bit of a struggle, I am online with my Linux-based Aspire One via a Verizon UM175 USB Modem using EVDO.
My wife has been hospitalized for the past week. (She had surgery and is doing well.). I have only been home to shower and return to to the hospital. I had planned to stay online via the hospital’s WiFi network. But the visitor WiFi point that I had noted is only open to visiting doctors, not patients.
So I ran out to Verizon and bought a UM175 USB modem. I got a little worried when the sales clerk had no idea what a netbook was. When I asked whether it worked with Linux, she gave me that blank look again. Then the light came on “Windows or Mac only.” I bought it after she told me it could be returned for refund within 30 days.
It took three days of innovation before I figured it out. But I’m finally live.
I did so many things that I’m not sure I could document the steps. I took pieces from many different places.
If you are trying to do the same and are stuck, drop me a comment below and we’ll figure it out together.
Anyway, it is great to be back.
Update 9/24/08: After reviewing my command history, here is what I believe were the magic steps.
While over my three-day implementation, I tried lots of different things from many different websites, most of what I describe below is taken from this article on wosten.com.
Step 1. Download (or compile) the module cdc-acm.
Jungo.com provides an overview of this module:
The CDC ACM driver exposes the USB device as a virtual modem or a virtual COM port to the operating system. The driver enables sending both data and AT commands, either through ACM (separating data and AT commands over different channels) or through Serial Emulation (passing the AT commands as is and as part of the data stream).
While you could compile your own executable version of cdc-acm, it is much simpler to download a copy from here [box.net] or here [adrive.com].
Step 2. Install the cdc-adm module
Open a terminal session:
Press “Alt+F2″
Type “terminal” and press <ENTER>
Change to the directory where you saved the downloaded cdc-acm module.
$ cd /path/to/downloaded/module
$ sudo mkdir -p /lib/modules/2.6.23.9lw/usb/class
$ sudo cp cdc-acm /lib/modules/2.6.23.9lw/usb/class/
Create a device file for the modem
$ sudo mknod /dev/ttyACM0 c 166 0
Add the cdc-acm module to the kernel
$ sudo depmod -a
$ sudo modprobe cdc-acm
Step 3. Install gnome-ppp application.
$ sudo yum install gnome-ppp (answer Y to all questions)
Step 4. Configure gnome-ppp
Start gnome-ppp
Press “Alt+F2″
Type “sudo gnome-ppp” and press <ENTER>. Configure by entering the information described below.
- Username: your-modem’s-phone-number@vzw3g.com
- Password: vzw
- Phone number: #777
- Click on the <Setup> button
- Under the Tab: “Modem”
- Device: /dev/ttyACM0
- Type: USB Modem
- Speed: 460800
- Under the Tab “Networking”
- Check: Manual DNS (Automatic does not seem to work)
- DNS 1: 66.174.92.14
- DNS2: 69.78.96.14
- Under the Tab: “Options”
- Check “Dock in notification area”
- Click on <Close> button
Step 5. Connect via gnome-ppp.
Click on the <Connect> button. Gnome-ppp will display a series of messages. When a connection is made, the gnome-ppp screen disappears. If a connection is not made, then the log file will contain detailed information.
I hope that this is all that is required. If you try this, please provide comments below to let us know if this works or not. If not, please post the messages from gnome-ppp’s log file, so we can troubleshoot together.
Good luck!
No Linux for Lenovo IdeaPad S10
Posted by Tom Greer on August 26, 2008 in Lenovo Netbooks, Netbook Market
As I was reviewing the pre-release information about the Lenovo Ideapad S10, I noticed that Gizmodo reported that Lenovo will not be offering a Linux version. Somehow, I had missed that piece of news.
I’m not surprised by this. Lenovo is going for volume. Eliminating the Linux version will help them keep their production costs down. They have previously publicly expressed concerns about netbook profit margins.
Of course, that means that Linux advocates (like me) will take their business elsewhere. That’s probably not a large number.
That also means that they will not be able to offer a product at the lowest price point. Asus, Acer and Dell will probably price their Linux versions at 10% to 15% below the S10.
Time will tell whether this was a good business decision.

Follow us on Twitter
Have you played with Moblin yet? What are you waiting for?? 

