Groups > comp.os.linux.advocacy > #286479

Re: NTFS is case-sensitive

From	owl <owl@rooftop.invalid>
Newsgroups	comp.os.linux.advocacy
Subject	Re: NTFS is case-sensitive
Date	2015-03-28 18:35 +0000
Organization	ok by me, so long as it doesn't get out of hand
Message-ID	<xfdeo.gjr7@rooftop.invalid> (permalink)
References	<bvh893r.a30rp@rooftop.invalid> <mf6n1h$i4p$3@dont-email.me> <hgheu0.paf3@rooftop.invalid> <bhf93.hjrow@rooftop.invalid>

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owl <owl@rooftop.invalid> wrote:
> owl <owl@rooftop.invalid> wrote:
>> DFS <nospam@dfs.com> wrote:

>>> cmd.exe is found in C:\Windows\System32, which holds 64-bit files on 
>>> Win7-64  (cmd.exe is also found in C:\Windows\SysWOW64, which holds 
>>> 32-bit files on Win7-64).

>>> When you run cmd in the Start box, it runs the [supposed] 64-bit version 
>>> of cmd.exe (the one found in System32).

>> I didn't quote the whole page.  Here's  the rest:
>> <quote>
>> ...
>> Other inconsistencies also exist. The Windows NT Command Prompt and
>> File Manager correctly display the names of the files. However, normal
>> commands, such as COPY, fail when you attempt to access one or more
>> filenames that differ only in case.

>> NTFS supports two slightly different modes of operation that can be
>> selected by the subsystem of the application interacting with NTFS. The
>> first is fully case sensitive and demands that file names supplied
>> by the application match the names stored on disk including case if
>> the file on disk is to be selected. The second mode of operation is
>> case preserving but not case sensitive. This means that applications
>> can select files on the disk even if the supplied name differs in case
>> from the name stored on the disk. Note that both modes preserve the case
>> used to create the files. The difference in behavior noted here applies
>> only when an application needs to locate an existing file. POSIX takes
>> advantage of the full case sensitive mode, while MS-DOS, WOW, and Win32
>> subsystems use the case insensitive mode.
>> </quote>

> Oh, and this KB article was written for NT 3.1.  So it's not a 32-bit
> vs 64-bit thing.  NTFS has apparently been fully case-sensitive from
> the get-go.

Here's what I get:

root@thinkpad:~# mount |grep win
/dev/sda2 on /win type fuseblk (rw,nosuid,nodev,allow_other,blksize=4096)
root@thinkpad:~# fdisk -l |grep sda2
/dev/sda2             192       18853   149899264    7  HPFS/NTFS
root@thinkpad:~# cd /win/Users/owl/test
root@thinkpad:/win/Users/owl/test# ls
root@thinkpad:/win/Users/owl/test# touch foo.txt FOO.txt
root@thinkpad:/win/Users/owl/test# echo "blah" > foo.txt
root@thinkpad:/win/Users/owl/test# echo "dfs" > FOO.txt
root@thinkpad:/win/Users/owl/test# ls -l
total 1
-rwxrwxrwx 1 root root 5 2015-03-28 13:45 foo.txt
-rwxrwxrwx 1 root root 4 2015-03-28 13:45 FOO.txt
root@thinkpad:/win/Users/owl/test# cat foo.txt
blah
root@thinkpad:/win/Users/owl/test# cat FOO.txt
dfs
root@thinkpad:/win/Users/owl/test# cd
root@thinkpad:~# umount /dev/sda2
root@thinkpad:~# exit
logout
owl@thinkpad:~$ 

Screenshot of file list under Windows 7 (64-bit):
http://i.imgur.com/uMP2GXu.png

Windows lets me open both files, but they both contain "dfs."
The file that had that text has a later modification date.
That might determine which file is actually opened with the names.
It does not overwrite the other file, even though it also shows
"dfs" instead of "blah."
Later, booting back into linux, the original date is intact:

owl@thinkpad:~$ sudo -i
root@thinkpad:~# mount /dev/sda2 /win
root@thinkpad:~# cd /win/Users/owl/test
root@thinkpad:/win/Users/owl/test# ls -l
total 1
-rwxrwxrwx 1 root root 5 2015-03-28 13:45 foo.txt
-rwxrwxrwx 1 root root 4 2015-03-28 13:45 FOO.txt
root@thinkpad:/win/Users/owl/test# cat foo.txt
blah
root@thinkpad:/win/Users/owl/test# cat FOO.txt
dfs
root@thinkpad:/win/Users/owl/test#

Thread

NTFS is case-sensitive owl <owl@rooftop.invalid> - 2015-03-27 22:46 +0000
  Re: NTFS is case-sensitive Slimer <slvrslmr@lv.c> - 2015-03-27 19:29 -0400
  Re: NTFS is case-sensitive John Gohde <john.h.gohde@gmail.com> - 2015-03-28 08:45 -0700
    Re: NTFS is case-sensitive DFS <nospam@dfs.com> - 2015-03-28 16:00 +0000
      Re: NTFS is case-sensitive owl <owl@rooftop.invalid> - 2015-03-28 16:26 +0000
        Re: NTFS is case-sensitive DFS <nospam@dfs.com> - 2015-03-28 12:56 -0400
          Re: NTFS is case-sensitive owl <owl@rooftop.invalid> - 2015-03-28 17:06 +0000
          Re: NTFS is case-sensitive John Gohde <john.h.gohde@gmail.com> - 2015-03-28 10:32 -0700
          Re: NTFS is case-sensitive Snit <usenet@gallopinginsanity.com> - 2015-03-28 13:08 -0700
            Re: NTFS is case-sensitive DFS <nospam@dfs.com> - 2015-03-28 22:22 -0400
              Re: NTFS is case-sensitive Snit <usenet@gallopinginsanity.com> - 2015-03-28 21:40 -0700
                Re: NTFS is case-sensitive Steve Carroll <fretwizzer@gmail.com> - 2015-03-28 22:23 -0700
                Re: NTFS is case-sensitive DFS <nospam@dfs.com> - 2015-03-29 11:06 -0400
                Re: NTFS is case-sensitive owl <owl@rooftop.invalid> - 2015-03-29 15:12 +0000
                Re: NTFS is case-sensitive DFS <nospam@dfs.com> - 2015-03-29 21:22 -0400
                Re: NTFS is case-sensitive Snit <usenet@gallopinginsanity.com> - 2015-03-29 23:08 -0700
                Re: NTFS is case-sensitive Snit <usenet@gallopinginsanity.com> - 2015-03-29 09:18 -0700
                Re: NTFS is case-sensitive DFS <nospam@dfs.com> - 2015-03-29 21:22 -0400
                Re: NTFS is case-sensitive Snit <usenet@gallopinginsanity.com> - 2015-03-29 18:27 -0700
                Re: NTFS is case-sensitive owl <owl@rooftop.invalid> - 2015-03-30 02:16 +0000
                Re: NTFS is case-sensitive DFS <nospam@dfs.com> - 2015-03-30 09:49 -0400
                Re: NTFS is case-sensitive Snit <usenet@gallopinginsanity.com> - 2015-03-30 08:24 -0700
                Re: NTFS is case-sensitive owl <owl@rooftop.invalid> - 2015-03-30 17:06 +0000
                Re: NTFS is case-sensitive Snit <usenet@gallopinginsanity.com> - 2015-03-30 12:19 -0700
                Re: NTFS is case-sensitive owl <owl@rooftop.invalid> - 2015-03-30 23:54 +0000
                Re: NTFS is case-sensitive owl <owl@rooftop.invalid> - 2015-03-31 00:06 +0000
                Re: NTFS is case-sensitive Steve Carroll <fretwizzer@gmail.com> - 2015-03-30 17:12 -0700
                Re: NTFS is case-sensitive Snit <usenet@gallopinginsanity.com> - 2015-03-30 17:41 -0700
                Re: NTFS is case-sensitive Snit <usenet@gallopinginsanity.com> - 2015-03-30 17:15 -0700
                Re: NTFS is case-sensitive owl <owl@rooftop.invalid> - 2015-03-31 01:07 +0000
                Re: NTFS is case-sensitive Snit <usenet@gallopinginsanity.com> - 2015-03-30 18:21 -0700
                Re: NTFS is case-sensitive Snit <usenet@gallopinginsanity.com> - 2015-03-30 12:24 -0700
                Re: NTFS is case-sensitive DFS <nospam@dfs.com> - 2015-03-30 20:46 -0400
                Re: NTFS is case-sensitive owl <owl@rooftop.invalid> - 2015-03-31 01:52 +0000
                Re: NTFS is case-sensitive Snit <usenet@gallopinginsanity.com> - 2015-03-30 19:10 -0700
                Re: NTFS is case-sensitive Steve Carroll <fretwizzer@gmail.com> - 2015-03-30 11:35 -0700
                Re: NTFS is case-sensitive DFS <nospam@dfs.com> - 2015-03-30 23:09 -0400
                Re: NTFS is case-sensitive Steve Carroll <fretwizzer@gmail.com> - 2015-03-30 22:01 -0700
                NTFS is not the best filesystem taka0038@gmail.com - 2015-03-31 18:52 -0700
                Re: NTFS is not the best filesystem Slimer <slvrslmr@lv.c> - 2015-03-31 22:51 -0400
                Re: NTFS is case-sensitive DFS <nospam@dfs.com> - 2015-03-30 09:48 -0400
                Re: NTFS is case-sensitive Snit <usenet@gallopinginsanity.com> - 2015-03-30 08:44 -0700
                Re: NTFS is case-sensitive Steve Carroll <fretwizzer@gmail.com> - 2015-03-30 09:37 -0700
                Re: NTFS is case-sensitive DFS <nospam@dfs.com> - 2015-03-30 20:50 -0400
                Re: NTFS is case-sensitive Snit <usenet@gallopinginsanity.com> - 2015-03-30 19:14 -0700
          Re: NTFS is case-sensitive Steve Carroll <fretwizzer@gmail.com> - 2015-03-28 17:09 -0700
            Re: NTFS is case-sensitive owl <owl@rooftop.invalid> - 2015-03-29 00:24 +0000
              Re: NTFS is case-sensitive DFS <nospam@dfs.com> - 2015-03-28 22:26 -0400
    Re: NTFS is case-sensitive owl <owl@rooftop.invalid> - 2015-03-28 16:09 +0000
  Re: NTFS is case-sensitive DFS <nospam@dfs.com> - 2015-03-28 13:06 -0400
    Re: NTFS is case-sensitive owl <owl@rooftop.invalid> - 2015-03-28 17:15 +0000
      Re: NTFS is case-sensitive owl <owl@rooftop.invalid> - 2015-03-28 17:28 +0000
        Re: NTFS is case-sensitive owl <owl@rooftop.invalid> - 2015-03-28 18:35 +0000
    Re: NTFS is case-sensitive owl <owl@rooftop.invalid> - 2015-03-29 12:57 +0000

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