Before and after formatting, quick format and normal formatting questions

USB flash drive digital card mobile phone card:

First of all, you need to confirm whether the SD card is good, and you can try it by replacing it.

1.Connect the card reader to the computer and see if the drive letter capacity is good.

2.If it doesn't work, you can try another computer or card reader. If it still doesn't work, it may be that there is a problem with the card and it has nothing to do with the machine.

3.The machine changes to another good card, try to see if it still shows this problem. If it is still, it proves that there is no problem with the card, but the machine settings or somewhere are damaged, need to be repaired or whatever.

The card cannot be repaired, if there is data, it can be recovered.

USB flash drive digital card mobile phone card: "prompt formatting", "unable to open normally","The device is not working properly"：

This situation is that there is no secure deletion during use, and after directly unplugging it, it will become "Prompt formatting" "Unable to open normally" "Device is not normal" "0 bytes" cannot be opened.

There are two types of situations.

1. Due to the sudden pull out of the U disk digital card mobile phone card, the loss of the FAT damage prompts insertion into the disk or formatting. In this case, it would be good to format the ** software on the Internet, such as diskgenius. If it doesn't work, try it with mass production tools.

2. Hard fault: due to sudden unplugging, the voltage instability may cause damage to the sperm element or burn the chip. Caused by the failure of the U disk itself such as crystal oscillator virtual welding.

In this case, I recommend that you find a professional data recovery company, or a USB flash drive repair company to try to repair the general recovery ** in about 200-300. Don't try to unpack the shell yourself, if there is a hard failure, you need to polish the memory card to extract the essence to recover, then 3000 up, don't try it yourself to avoid aggravating the failure. If you don't have important data, I'd suggest you switch it out!

If you have any questions, you can ask them, I hope to help everyone

Hello! Hello, do you want to reset all settings or clear all data, reset all settings: restore all modified settings to the factory state. Including network settings, brightness adjustment, etc. This can be used to restore when the system settings are abnormal.

Erase all data: You will lose all the data on your phone (except the data on the TF card), including installed apps, books, text messages, etc. When there is a serious abnormality in the mobile phone and there is no other way to solve it, use this item with caution.

Can be formatted under cmd.

Start --Run --cmd

Input. format e: fs:ntfs This is the format of NTFS, if you want fat32 you can change it to fs:fat32

Next, you will be prompted to enter the volume label, whether you want to unload the volume (choose yes here), there may be a hint, just do it as required.

If you just want to clear the files on the disk, you can do that.

format e:/q

SSDs cannot be formatted, partitioned, or read. can all be processed through the card activation tool.

The normal formatted data in the memory is also not cleared. The difference between fast and not fast seems to be just a disk check and not a check. Although I just checked it, many people said that the data would be cleared, but I feel that what I said is not reasonable enough.

In the past, the hard drive was formatted, so I studied data recovery for a few days. After formatting, under hexadecimal system, the hard disk sector is not all zero, and the data area is all zero. Professionally, I've recovered that kind of data, at least partially recovering, which means that clearing or clearing one is not right.

I checked the related books, fat16 fat32 are all data area is not cleared, that is, formatting does not change the data in the data area, only changes the data in the file system area, ntfs according to my last experience in data recovery. Exceptions to partition formats for other systems are not guaranteed. As a rule of thumb, this is also the case with Linux's ext3.

After normal formatting, if no new data has been written, it can still be restored.

1. Formatting is to divide a blank disk into 1 small area and then number it, so as to provide a computer to save and read the data. Without these tools, the computer would not know how to read and write the contents of the hard drive;

2. The concept of formatting was originally only applied to computer hard disks, with the continuous development of electronic products, many memories have used the term "formatting", which is understood in a narrow sense, which is equivalent to data clearing, deleting all data in the memory, and restoring the memory to the initial state;

3. Normally, formatting is to establish tracks and sectors in the disk, and after the tracks and sectors are established, the computer can use the disk to store data. Therefore, when using formatting, it also needs to go through partitions before it can be used;

4. After the disk is partitioned, then it is called formatting (advanced formatting) work, so that the hard disk is cleared and the storage is restored to its initial state.

Formatting is to delete all the things in a drive letter, for example, if you have a USB flash drive, format the USB flash drive, and everything in it is gone.

Disk formatting is the process of writing zeros on all data areas of a physical drive (disk), formatting is a purely physical operation, and at the same time, the hard disk media is checked for consistency, and unreadable and bad sectors are marked. Since most hard drives are formatted at the factory, formatting is only necessary if the hard disk media produces errors.

For example, if you just bought a new garment, you have to wash it once before wearing it, see if it fades, even if it doesn't fade, there may be chemical residues, and formatting is similar to this. Of course, some people want to convert the disk format, and they may also use formatting.