This how to tutorial describes a simple way to check for bad sectors on a USB flash drive. The instructions below will also fix any bad sectors, if possible, during the scanning process.
A bad sector on a flash drive is a portion of memory on the flash drive which cannot be accessed, written to, or read from and therefore cannot be used. A bad sector on a flash drive sounds easy enough to diagnose, but it’s important to know there are two types of bad sectors: hard and soft.
Physical damage to a USB flash drive will create a hard bad sector. A hard bad sector cannot be repaired or fixed and is typically induced from physical abuse. A good example: leaving a flash drive in your pocket and it went through the wash, or the device was dropped and hit the ground is such a way, physical damage happened to the memory.
A soft bad sector on a flash drive are memory logic problems. A soft bad sector can occur from a software or data error during the write process. In lower quality flash drives, it is possible the incorrect firmware was written into the USB controller ROM and thus creates instability via soft bad sectors.
Bad sectors cannot be repaired; however soft bad sectors can be repaired.
The soft bad sectors can be fixed by using the CHKDSK utility in the Windows operating system. This same utility will also flag any hard bad sectors not to be used again, and of course not repaired.
Some signs of a bad sector on a flash drive include:
Cannot read a file on the flash drive
A file location is no longer available
Unable to format the USB flash drive
A disk read error occurs during operation
In our opinion, run the check disk one time to see if your issue is resolved, but if subsequent scans are required, we recommend discarding the flash drive to avoid further issues.
Running the chkdsk scan is really easy:
Insert flash drive to computer
Using Windows Explorer navigate to the drive letter
In the Explorer window type cmd and press enter
Once inside the command line utility type chkdsk d: /f /r /x and click Enter. NOTE: *The letter d represents the drive letter of the flash drive.
The /f parameter tells CHKDSK to fix any errors it finds.
The /r parameter tells Windows to repair/restore bad sectors (if possible).
The /x parameter unmounts any “handles” to the drive or said another way, this step will not allow any other resource to access the flash drive during the scan.
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Using the command prompt (cmd) you can quickly and easily get the USB volume serial number and the USB device serial number. There is no computer experienced needed to perform these functions, simply type a couple letters and you will get the information!
To get the USB Volume Serial Number do the following:
Insert USB flash drive into the computer
Double click the drive letter associated with the USB flash drive (remember the drive letter as you will need this in a moment)
In File Explorer type: cmd
From the command prompt type: vol d: and click Enter ( where “d” is the drive letter of the USB flash drive)
The command prompt window will return the results and look something like this:
The Volume in drive D is named “Nexcopy”
The Volume serial number is 3AAB-AA16
After we explain how to get the USB device serial number we will explain the difference between the two.
To get the USB Device Serial Number do the following:
It’s been reported for over four years Apple is trying to solve the non-invasive way to test for blood glucose levels, yet continue to run into problems.
The problems have not been disclosed by Apple during the development process, but it is almost certain the reason is from inconsistent test readings. Meaning, Apple’s method or technique for reading a body glucose level is not consistent enough to submit for governmental approval.
Hey Apple! If you want to solve your glucose testing issues… listen up, here’s how:
It is well documented the level of glucose in the blood has a direct correlation to the viscosity or fluidity of the blood itself.
We feel the sensor technique from Apple is not accurate enough to determine the viscosity and therefore cannot get accurate glucose readings.
To us this makes sense because whatever sensor the Apple watch is using, is trying to determine levels through a part of skin which is too thick. The wrist.
Forget using the Apple watch as your source for testing. What Apple needs to create is a mouth piece that communicates with the Apple watch and scan the lingual frenulum skin for opacity which in turn indicates viscosity of the blood. The lingual frenulum is the thinnest piece of skin on the human body which gives you the ability to more clearly scan for blood viscosity by determining the level of opaqueness of blood circulating through the lingual frenulum.
A mouth piece would need to be developed to sit under the tongue with a sensor pointed towards the lingual frenulum which would scan the blood circulation or flow and based on color feedback it can be determined the level of sugar in the blood stream at that time.
The “under tongue” mouth piece would be used only when a reading is required by the user. In our estimates the reading would last no longer than 5 seconds.
To get the reading, the mouth piece would be designed to read from the left and right side of the lingual frenulum to determine the opaqueness of the blood. The heavier the viscosity the darker or dense the blood is and therefore more opaque. Blood is lighter when the glucose level is lower and less opaque. Blood is darker when the glucose level is higher.
The “under tongue” mouth piece would communicate wirelessly to the Apple watch to report the reading.
It goes without saying, the above solution is not a finished product. Development and testing of the mouth guard would need to be designed by the Apple HealthCare team. But this hot tip points you in the right direction.
If someone at Apple reads this article, I hope they have enough moral fiber and respect of OUR idea to reach out and contact us. gmo (at) getub.info
