![]() To solve this problem, we can reset the file data and the control information by low-level formatting. This operation will stop the control chip to set the control information into the storage blocks, subsequently leading the SD card not to work. ![]() However, some SD cards are unable to be formatted if it is plugged out suddenly when data is being written. What’s more, this method is also suitable to repair the bad tracks caused by collisions.įor SSD, USB or SD card, low-level formatting (also called as “production”) means refreshing the information of data saving and controling chip, including the storage capacity, chip vendor, the internal storage algorithm, the storage blocks and the list of sectors. ![]() Thus, it is not suggested to use low-level formatting unless it is absolutely necessary.įor HDD, low-level formatting can outline the sectors again to avoid the aging or damaged storage blocks. Once it works, all data, including those protected data, will be deleted. However, low-level formatting, the operation with physical loss, works for the whole disk. ![]() It can be completed in DOS, Windows NT and Linux, even by the written commands. Click the Erase button and the drive will start formatting. Select the format Mac OS Extended (HFS+), MS-DOS (FAT32), or exFAT then name the drive. Select your external hard drive or USB flash drive from the list on the left. Launch Disk Utility (Applications > Utilities). Low-level formatting is the process of emptying the disk and outlining the sectors to restore the default settings. Format a drive using Disk Utility on a Mac.
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