USB Flash Drives PCB, COB, UDP
This is a USB stick using the PCB method:

USB Printed Circuit Board
This is a USB stick using the COB method:

USB Chip On Disk
This is a USB stick using the UDP method:

USB Disk in Package
USB Printed Circuit Board
USB Chip On Disk
USB Disk in Package
There are two ways to make a USB stick read only. One method will make the USB read-only in anything it is connected to, so you could say this is a universal way of making a flash drive write protected.
The other way is a PC specific solution where some registry edits are required to any computer the USB flash drive is connected to.
When we say 100% permanent, this means the USB stick is read only (write protected) on all devices, whether it be computers like a Mac, Windows PC, Linux box or non-processor based products like a car stereo. This permanent solution also means the status of the drive cannot be changed. The other method flags a USB device to be read only in relationship to the PC it is connected to so that whenever that USB stick is connected to that computer, it makes the USB read only and blocks all write commands to the device.
Most times an IT manager or content owner wants the USB stick to be read only so the files cannot be deleted or formatted off the drive. Another reason for making a USB read only is for the original files to remain the same and blocks the ability for files to be changed or manipulated. Finally, it’s smart to have USBs read only so that virus’ don’t jump onto the drive and possibly spread to other computers.
Let us start with the less permanent way because it’s easier to do and doesn’t require any specific hardware.You will need a Windows7 machine or higher. The Windows7 machine will have DiskPart utility which allows us to perform all sorts of cool things to flash drives, like setting write protection.
This will run your Command prompt.
Now you will need to find the USB stick connected to your PC. Most likely it’s DISK 1
Did you know Windows will make over 260 registry entries with a single enumeration of a USB stick? This means for those with multiple flash drives your registry will get extremely cluttered and bogged down.
With flash drives dirt cheap these days, you’ll find at least a couple dozen going into your computer through the year. That would be over 6,240 registry entries.
USB Scrub is a free utility which performs a deep cleaning of those unused drivers and registry edits.
We gave USB Scrub a try, and it worked great. We went from enumerating a single USB stick in 45 seconds to enumerating that stick in less that 12 seconds.
In addition, if you have a USB stick that doesn’t perform correctly or the Windows OS doesn’t see it, chances are the USB Scrub will clear up those problems and your drive will work once again. This is because a registry entry can become corrupt and simply clearing it out will resolve your issue.
So lets take a closer look.
Using RegShot [a free application which takes a snap shot before and after an event and compares only the changed registry values] I took a snap shot before and after a USB stick was connected and ejected. The result was this:
Here is a snap shop. Click the image to get the full text file.
Continue ReadingIf I’m looking for a USB drive, the first thing I look at is the Copy To or Write speeds, this is what is most important to me, the next thing would be the Copy From speeds, as for me what I do most is put data on it, then take it off, reading from the drive is not that important to me really. So it all depends on what your priorities are concerning USB drives, the results are here, you can judge for yourself which is best for you.For the full 16GB USB Drive review please visit Test Freaks webpage. Continue Reading