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Windows 95/98 and Windows NT/2000 store long filenames on FAT in special
directory entries with set attributes ReadOnly, Hidden,
System and Volume, so if you access FAT volume from DOS
you don't see these "files". These special entries have this mad structure:
byte sequence number for slot
string(10) first 5 characters in name
byte attribute byte
byte always 0
byte checksum for 8.3 alias
string(12) 6 more characters in name
word starting cluster number, 0 in long slots
string(4) last 2 characters in name
Problem occur when you delete or modify file with long name from system without
VFAT support, because only DOS 8+3 entry will be deleted or modified. Scandisk
from Windows 95/98 can repair this problem.
Linux has it's own FAT extensions which gives you long filenames, permissions
and owners, links and special devices on FAT partition, called UMSDOS.
Each directory contains file named
"--linux-.---". There are stored long names and other necessary
fields. For more information see file /usr/src/linux/Documentation/filesystems/umsdos.txt. Author of Linux umsdos driver is Jacques Gelinas
<
jacques@solucorp.qc.ca>
and it is currently maintained by Matija Nalis
<
mnalis@jagor.srce.hr>.
OS/2 Warp version 3,4 and 5 stores long filenames and extended attributes on FAT
volume in files "\ea data. sf" and "\wp root. sf" (both files are in root
directory of filesystem). AFAIK there is no known implementation of OS/2 EAs
for any other OS. If you can supply any information about EA structure, don't
hesitate to mail them to
me.
Star LFN is an emulator that allows programs, running under DOS 4.0 or
above, to use the long filename functions present in Windows'95 DOS
boxes. Currently, it can only read and write long filenames from and
into a system+hidden file, which means you can't either read or write
real Windows'95 long filenames. For more information see
http://sta.c64.org/starlfn.html.
VFAT-OS2 is a package that will allow OS/2 to seamlessly access Windows
95 VFAT formatted partitions from OS/2 as if they were standard OS/2 drive
letters. The ultimate aim of this package is to be able to use the VFAT
file system as a replacement of FAT. It can now also access NTFS partitions in
read-only mode.
Some people say that Microsoft has released a driver called LFNDOS that
provides the Microsoft Long Filename API under DOS. If you know where can this
driver be downloaded, send me e-mail please.
LFNDOS provides the Windows95 Long Filename (LFN) API to DOS programs.
It uses the same format for storing the
names on disk as Windows95 does, so you can view and use long filenames under
both systems interchangeably. It runs as a memory-resident program, and while resident requires about 60k of conventional memory.
Under Windows95, a DOS program can use long filenames by calling a set
of interrupt functions, which Windows provides. For example, COMMAND.COM
will allow long filenames when run as a DOS Prompt from Windows, but not
if you restart in MS-DOS mode. Other programs such as EDIT.COM and all DJGPP
programs use long filenames if available.
These tools provide easy file management under DOS with long filenames
created by Windows 95/98 on FAT32, FAT16 and FAT12 file systems.
Typing LDIR brings up the directory with its
long filenames. Copying a file with LCOPY preserves long filenames.
You can even create directories (LMD) with long names or rename files
(LREN) with long names.
FAT32.IFS for OS/2 will allow you to access FAT32 partitions from OS/2. You
cannot create FAT32 partitions, you'll still need Win95 OSR2 to do that.
Also, OS/2s CHKDSK cannot fix all possible errors that can occur, you'll
have to use Windows 95 Scandisk to fix certain errors.
FAT32 filesystem driver for NT 4.0 and NT 3.51.
This is a FAT32 file
system driver for Windows NT(R) 4.0. Once installed, any FAT32 drives present
on your system will be fully accessible as native Windows NT volumes. Free
version provides read-only capabilities. A read/write version is for sale.
DMSDOS reads and writes compressed DOS filesystems (CVF-FAT). The following
configurations are supported:
- DoubleSpace / DriveSpace (MS-DOS 6.x)
- DoubleSpace / DriveSpace (Windows 95)
- DriveSpace 3 (Windows 95 with Plus! pack)
- Stacker 3
- Stacker 4
It works with FAT32, NLS, codepages (tested with fat32
patches version 0.2.8 under Linux 2.0.33 and with fat32 in
standard 2.1.xx kernels and 2.0.34+35). Dmsdos can run together with vfat or
umsdos for long filenames. It has been redesigned to be ready for SMP
and should now compile completely under libc6.
Resizes FAT16/FAT32 filesystems. It doesn't require any other
programs (like a defrager). It has --backup and --restore
options, so if there's a power failure, (or a bug), you can
always go back. The backup files are usually < 1 meg.
The author probably won't be releasing any more versions of fsresize,
because he is working on parted - a Partition Magic clone. It will be
able to resize, copy, create and check filesystems/partitions.
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