
Safely removing usb flash drive
Lack of patience has often resulted in all of us, at one time or the other, just yanking off the USB drive fom the port of our laptops, without due respect to “Safely Remove Hardware” feature that Windows provides. So, how unsafe is unsafe hardware removal really? Devices use the USB port for 2 main reasons:-
Power
Many USB devices (and certainly all flash/pen drives) draw power from the USB port itself for their functioning. Yanking off a device without using safely remove feature could affect both the device and the port, but the chances are very very minimal.
Data Transfer
Certain operating systems do delayed writes to devices to optimize writing. If this is the case with the operating system in question, there is a risk of data getting corrputed if the device is pulled out abruptly. Writes could continue even after the operating system signals that the writing is over. If the light on your device is blinking, it means that it is in use and should not be pulled out.
An out of date article on Microsoft’s website mentions that Windows XP refined its caching policy for removable storage as of Windows XP Beta 2. For consumer-oriented removable storage (USB, Flash, Zip, and so on), write caching is now disabled by default. What it means to the end user is slower writes, but no data corruption when the device is pulled out by surprise. So, the bottom line remains that if you are on an updated Windows XP, you can pull out the device without risk of data corruption. Keep enjoying your habits