It is highly recommended that the file system can not occupy over 128M on
the device with great flash storage space; otherwise, the system will slow
down the boot rate evidently and the waiting time of executing command dir
to view the file for the first time in privileged mode will be increased greatly.
Therefore, it is recommended to clear some useless outdated files manually
after the file system has been used for some time.
For the device with the flash storage space(excluding the storage space for
the extended flash) is 32M, when the free memory is less than 512k, it is
recommended to clear the useless outdated files manually to ensure the
normal operation to the flash file system.
For example, when the USB mounts, the operation system deals with the
flash file system. Therefore, when it fails to mount the USB file system and
the free flash memory is less than 512k, it is recommended to clear the
timeout and useless files manually and then try again.
For the device with the flash storage space(excluding the storage space for
the extended flash) is 512M, when the free memory is less than 4M, it is
recommended to clear the useless outdated files manually to ensure the
normal operation to the flash file system.
For example, when the USB mounts, the operation system deals with the
flash file system. Therefore, when it fails to mount the USB file system and
the free flash memory is less than 4M, it is recommended to clear the useless
outdated files manually and then try again.
When the free flash memory is less than the 110%*the size of the file to be
copied, it is recommended to clear the useless outdated files manually to
ensure the successful copy.
For example, when you want to copy the file in 10MB, the operation system
will make use of the partly flash storage space to manage the 10MB data.
Therefore, when the flash memory space is less than 11MB, it is
recommended to clear the useless outdated files manually and then try
again.
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