How to write-protect the camera disk

How to solve the problem of write protection of camera memory card?

The solution for write protection of camera memory card is as follows:

Preparation materials: SD card, computer

1. Turn on the computer, insert the SD card into the computer, and click the right mouse button on the computer desktop to open it.

2. Then in the column of "Removable Storage Device", find the drive letter of the SD card, click with the right mouse button and select the "Properties" button.

3. Then in the properties, switch the card from "General" to "Tools", and you can find that the first column of this card is "Error Checking", and select "Start Checking".

4. Check "Automatically repair file system errors" and "Scan and try to recover bad sectors" in the disk check options, and then click "Start".

5. Wait a while, return to the "Computer" page, find the drive letter of the SD card again, and right-click and select "Format".

6. At the bottom of the "Format" card, select "Start" to format the SD card, and the write protection of the SD card is successfully released.

First of all, one thing is clear: up to now, almost all mobile disks don't have the write protection switch like U disk.

To realize the write protection function of the mobile hard disk, it is generally to format the mobile hard disk into NTFS format, and then set the user rights to realize the write protection of the mobile hard disk.

So your mobile hard disk should be write-protected in this way.

There are two solutions:

First, log in to the system with a user account with write permission to the mobile hard disk. Right-click the drive letter of the mobile hard disk, select Properties, and then select Security. You can see what permissions those users of the system have on the mobile hard disk.

Second, log in with the administrator account, copy the important information to the hard disk, and right-click My Computer → Management → Disk Management. Find the mobile hard disk in the next window and repartition and format it. First of all, FAT32 to NTFS

Second, change the strategy

Third, modify the registry.

Attach the first, second and third detailed steps as follows:

Because I did the following two steps, I still didn't solve the problem. Second, the registry method, you can directly try the feasibility of changing the strategy later without converting the format, if it is feasible, it is best.

First of all, FAT32 to NTFS

The USB flash drives of most colleagues are in FAT32 format. Now let's convert them to NTFS format:

For example, your USB flash drive is the L: drive in your computer.

1, win+r enter cmd.exe (that is, start dos, which is in windows) or attach a command prompt;

2. use the convert command Note that the convert command cannot convert the current disk, so it can operate under any drive letter except l:. Take the D: disk directory as an example;

3. Enter the following command convert1:/fs: NTFS/nosecurity/x.

The problem was initially solved.

Note: This method can only be used in an emergency. Re-login may cause write protection problem again, which is under test.

Hong (hi.baidu.com/xinbar)

Second, change the strategy

When the write protection problem occurs again after restarting, please do the following.

1. Select USB flash drive-Properties-Hardware.

2. Choose a USB flash drive, taking Tsinghua Putian as an example.

3. Select Properties-Policy

4. Change the policy as shown.

Problem solved. Because I made the changes according to the above two steps, netizens can try whether it is feasible to change the strategy in the future without changing the format. If it is feasible, it is the best.

Third, modify the registry.

1. Open the registry win+r and type regedit.exe.

2. Enter the following directory: HKEY _ Local _ Machine \ System \ Current Control Set \ Control \ Storage Device Policy.

If there is no StorageDevicePolicies project, please create it.

3. Create a Dword value named WriteProtect and set it to 0.

Step 4 start over

The above is a routine operation, but in actual operation, the above operation sometimes cannot solve the problem of write protection. In view of this problem, the author has carried out the following operations.

5. Restart with a USB flash drive when restarting. When the system restarts until the USB flash drive lights up, unplug the USB flash drive.

6. After the system restarts, insert the USB flash drive and the USB flash drive will run normally.

Supplementary note: HKEY _ local _ machine \ system \ control set 002 \ control \ storage device policy in the registry; The value of WriteProtect in HKEY _ local _ machine \ system \ control set 00 1 \ control \ storage device policy is also changed to 0;

Disclaimer: In addition to modifying the registry, the two methods can only solve the write protection of the U disk. Please choose carefully, and it is best not to convert the format. If the format is converted, the data from FAT32 to NTFS will not be lost. After the U disk returns to normal, it can be formatted as FAT32. The conversion from FAT32 to NTFS is very simple, but the other way around, it will be troublesome. After the conversion, it will be counted.

How to remove the write protection of digital camera SD card/

There is a small valve on the side of the card. Push it up to release the write protection mode.

Reasons and solutions for write protection of SD card;

Firstly, the card reader is USB2.0, and the computer USB interface is USB1.0; ;

The second case is that other USB devices have been connected to the same USB interface before. Such as a removable hard disk. MP3 and so on.

The third is that a computer connects multiple USB devices. This may cause this situation.

Fourth, there are requirements for cards or card readers.

The first solution: replace the hardware equipment.

The solution to the second problem is simpler. Just plug in a USB interface

The third question is relatively simple. You can identify it by picking up a few more.