How to remove SD card protection, how to remove the protection of mobile phone memory card?

1. First tap Settings on your phone, as shown in the figure below.

3. Then in the page that opens, find the developer options, and if you don't find it, enter all the parameters, and click the version multiple times.

4. Open Developer Options and turn on the Force Allow Apps to Write to External Storage Devices option.

The memory card is write-protected and cannot be written or formatted on the computer! Here's how to fix it:

1.Open the "Start" button on the computer, open the "Run" and enter "cmd" enter, 2Type "format j:", as shown in the following figure: (Note: j means that you want to process drive letters, here I want to process j disks).

3.Enter, enter, done!

1. The memory card of the mobile phone is indeed with write protection, and there is a write protection switch on the card, if there is write protection, it is recommended that you check the memory card itself and turn it off.

2. If the mobile phone memory card does not have a write protection switch, it is a normal kind of card Write protection is a very abnormal phenomenon This is actually because the size of the card reader and the memory card itself can not be in contact with the complete The working principle of the protection of the memory card is actually to control the contact area of the metal contact point, if it is not possible to ensure that all the metal pieces are pressed, it is the default to the write protection switch is turned on, which is also the practice of writing the protection switch on the memory card The solution is to find a piece of paper that is hard and insert it into the card reader along with the front of the memory card, so that the metal piece is fully in contact and you can also press it into the card reader by hand.

3. In this case, use the method of solving the memory module, find an eraser, and wipe it back and forth on the metal sheet several times, which can be solved without major damage.

4. It may also be that there is a problem with the contact piece of the memory card of the mobile phone itself, or the life of the memory card has expired, so you can only buy a new one or find a merchant.

5. If there is really no way, you can also try a different card reader.

The method and detailed operation steps are as follows:

1. The first step is to run cmd command prompt with administrator privileges, search for cmd directly below, right-click and select the "Run as administrator" option, see the figure below, go to the steps below.

2. In the second step, after performing the above operations, execute the "diskpart" command in cmd running with administrator privileges, see the figure below, and go to the steps below.

3. In the third step, after performing the above operations, to list all disks on the computer, please execute the following command in diskpart interactive mode to list the disks.

On the far left is the serial number of the disk, which can be judged by the size of the disk, see the image below, go to the steps below.

4. Fourth, after performing the above operations, it can be seen that disk 2 is write-protected, so select disk 2, and then execute the "select disk 2" command, see the figure below, go to the steps below.

5. Step 5, after performing the above operations, execute the "attributes disk" command to view the basic disk properties, you can see that the read-only properties have been set, see the figure below, go to the steps below.

6. Step 6: After performing the above operations, clear the read-only attribute, delete the write protection, and then run the following command "attribute disk clear readonly", as shown in the figure below. In this way, the problem is solved.

Use the disk repair program to repair the SD card. In my computer, find the drive letter of the SD card and right-click, select "Properties" - "Tools", click "Start Troubleshooting", in the pop-up "Check Disk" dialog box, check both "Automatically fix file system errors" and "Scan and try to recover bad sectors", and then click "Start" to perform the repair operation. After the repair operation is completed, format the SD card again.

There is a "lock" switch on the riser card, make sure that the protection switch is turned off before writing to the SD card.

Check whether the card reader has hardware faults, because some card readers are protected by the system itself when they leave the factory, so they can only be used for specific brands and models of cards. If the new card reader can read and write the data in the SD card normally, it means that the card reader is broken, and you can replace the card reader again.

Check the connection interface between the SD card, the card reader, and the computer to determine whether the components can be connected correctly to prevent SD write protection due to poor contact.

In addition, the memory card is plugged and unplugged for a long time, and it is easy to cause metal contact pieces, oxidation or wear and tear, and in this case, use the solution to the memory module, find an eraser to wipe the metal sheet, wipe it back and forth several times, and generally no major damage can be solved.

My SD card also had a write-protection problem, and I was told to push the small lock card on the side of the card to the unlock position, and there is no other way to lock it. Then you need to check the card reader port.

I have a card, and the protection lock switch is on, not locked, but it can't be deleted. I thought of a lot of ways. Finally, it's done like this: select this disk, right-click the attribute selection tool and select the error to start checking.

The SD card prompts you to write to protect the file, which is an error before the computer is equipped with the SD card! As long as you unplug the SD card and reboot it, it will be ready to use.

There is a write-protection switch on the memory card, and the write-protection switch is on the corner of the memory card, which is like a slider, and you can pull it off;

Don't get a check.

I've had this kind of problem as well.

If you don't have a password or flip the protection switch.

It is estimated that the card is in poor contact with the card reader.

When inserting the card, stuff a piece of cardboard at the back so that the card is in close contact with the card reader.

There is a small switch-like thing on one side of the card that can be toggled, and to dial it in the other direction is to remove the write protection.

If the contact is not good, it will also write protection, try a different card reader.

1。Is your memory card a large card (no card tow alone) or a small card (card tow is required to be used in a card reader)?

2。First of all, make sure that it is really write-protected: right-click on the portable hard disk, Properties, and see if there are three items in your file properties (read-only) (hidden) (archive) Check mark ( ) is typed on Read-only (e.g.

Read-only) If this is the case, the proof is indeed write-protected, because normally all three are not marked According to these my analysis guidelines are as follows.

First, you first see if the lock on the card drag of the card reader is closed (there is a word lock), you just need to dial the other end to cancel the write protection.

Second, it is possible that the contact effect between your memory card and the card tow is not good, you put the card with a layer of paper to try, I have padded paper myself, very practical.

Third, if there is a condition, connect the computer with a data cable, and fourth, if none of the above can be solved, then you can format the card.

There should be a write-protected key on the card, look for it carefully! to find it.

Usually that position should have the word lock, and an arrow, and the direction of the arrow indicates the lock.

Click on the portable hard drive - right-click and there is a format option to click.

There's a switch on the SD card, oh, it's on the side. Just push it.

SD card write protection has the following situations:

The first case is that the memory card does have write protection, which is different from the RS-memory card, which has a write protection switch. The solution is that if there is write protection, check the memory card itself Generally, there will be a small switch on the memory card, and you can turn it on to the other end.

The second situation is that the memory card does not have a write protection switch, which is the normal kind of card It is very abnormal to have write protection It is not a password to the card in the mobile phone Obviously, the password is added to open the card on the computer and the input decoding window will appear This is because the size of the card reader and the memory card itself can not be completely contacted The working principle of the protection of the memory card is actually to control the contact area of the metal contact point, if it is not possible to ensure that all the metal pieces are pressed, it is the default write protection switch is turned on, This is also the practice of writing protection switches on RS-memory cards, and the solution is actually to find a piece of hard paper and insert it into the card reader along with the front of the memory card, so as to ensure that the metal piece is completely in contact, and it can also be pressed into the card reader by hand

The third situation is that the memory card is plugged and unplugged for a long time, resulting in the metal contact piece, oxidation or wear phenomenon, in this case, use the solution to deal with the memory module, find an eraser, wipe back and forth on the metal sheet several times, generally no major damage can be solved

The fourth situation is the problem of the memory card itself, which has to be repaired by the memory card repair tool, which can be solved by the memory card.

There is a small slider on the side of the SD card, just slide it in the other direction.

Yours must be the disk protection caused by the card reader, just dial the small lock button on the card reader.

There should be an English on the SD card.

There will be a protection switch next to it that can be moved up and down, and you can push it up.

There is a Lock knob on the side of the SD card.

Diaggling to Lock is disk write protection, and the SD card can only be read, not written.

Dial to the other side and it is readable and writeable.

There is a small slider on the SD card, just push it in the opposite direction from now.

There should be a slider on the SD card, which is specifically used for protection.

Is it the protection switch on the SD card that you turned on, try it.

The card tray has something on the side that you can slide onto and you can slide to the other side.

Hello, to tell you a repair case that I have personally tried, you may wish to try it: my SD card reader inserts a few cards are only able to read can not write, showing disk write protection, the lock button of the card is in the state of unwritten protection, after eliminating the problem of the card, I removed the card reader shell, take a good card reader for comparison, and found that the card reader on the right side of the card slot (that is, insert the SD card, the side of the write protection switch), there is a spring piece, the far root section of this spring piece is poked inside with a ballpoint pen or needle (pay attention to force, If you poke too many cards and you can't insert them, you can poke them back from the inside), and you can solve it.

Let's see the two pictures more clearly.

Is the problem solved, give it a point, hehe.