R0.16 patch 1

August 3, 2025

The Unicode conversion module, ffunicode.c, linked at LFN configuration occupies
a large amount of memory when it is configured for DBCS.
From a suggestion in user forum, I have found that there is much room for improvement
of the compression ratio of 6 out of 8 conversion tables. This is the result in
table size by modification of compression algorithm.

Japanese (932)               59k  ==>   47k (-12k)
Simplified Chinese (936)    174k  ==>   97k (-77k)
Korean (949)                136k  ==>  103k (-33k)
Traditional Chinese (950)   108k  ==>   78k (-30k)
All CP (0)                  482k  ==>  329k (-153k)

R0.15a patch 1

January 9, 2025

FatFs fails to load the FsInfo in FAT32 volumes and the f_getfree function will always be forced
a full FAT scan which takes a long time.

This problem was appeared at R0.15a and reported via an e-mail.

R0.15 patch 3

August 15, 2023

f_setlabel function fails when set a volume label in Unix style volume ID.

This problem was reported via an email.

R0.14b patch 2

April 4, 2022

String functions, f_puts and f_printf, cannot write the unicode characters not in BMP
to the file when FF_LFN_UNICODE == 2 (UTF-8).

R0.14a patch 2

February 14, 2021

f_mkfs function can create wrong exFAT volume.

This is a time dependent malfunction that two boot records each have different volumme sereal number. As the result, such exFAT volume cannot be mounted by Windows.

R0.14 patch 1

November 10, 2019

Old floppy disks formatted with MS-DOS 2.x and 3.x cannot be mounted.

This is because the boot sector lacks "FAT" string and 0xAA55 signature.

R0.13c patch 5

August 30, 2019

Wrong memory read one or more characters beyond end of the input path name.
If the memory area following the string terminator is filled by / or \, it can cause memory
protection fault or bus fault.

R0.13b patch 3

Sep 3, 2018

f_getcwd function uses memory location beyond the output buffer length specified by argument if
the buffer has a valid drive number. It can collapse the data located next to the output buffer.
This problem was reported via email.

R0.13a patch 1

October 27, 2017

File open and directory listing of any file on the exFAT root directory
beyond the cluster boundary can fail with FR_INT_ERR.