File paths redirected to MSYS directory

Nathan Rose
Mon Nov 29 07:20:00 GMT 2010

I have just installed Cygwin on my WinXP box for the first time. I already had MSYS installed. They are installed in the directories C:\cygwin and C:\msys respectively.
Simple file operations like cp or mv work fine within Cygwin . However, when I try to open a file with vi, it opens the equivalent file in the MSYS directory. For instance, the command 'vi /etc/fstab' will open the file 'C:\msys\1.0\etc\fstab' instead of 'C:\cygwin\etc\fstab'. Similarly, running make failed at one point with the error "bash.exe: warning: could not find /tmp, please create!" despite the directory 'C:\cygwin\tmp' existing (whereas the equivalent in MSYS does not exist).

I thought this might have something to do with mount points. The list from df -h is as follows, but nothing looks wrong to me.

Filesystem            Size  Used Avail Use% Mounted on
C:/cygwin/bin          75G   23G   52G  31% /usr/bin
C:/cygwin/lib          75G   23G   52G  31% /usr/lib
C:/cygwin              75G   23G   52G  31% /
C:                     75G   23G   52G  31% /cygdrive/c
G:                    2.0T  1.1T  946G  53% /cygdrive/g
H:                    2.0T  616G  1.4T  31% /cygdrive/h
N:                    599G  347G  253G  58% /cygdrive/n
O:                    300G  147G  153G  50% /cygdrive/o
P:                    599G  347G  253G  58% /cygdrive/p
Q:                    300G  147G  153G  50% /cygdrive/q
T:                    499G  104G  396G  21% /cygdrive/t
Y:                    599G  347G  253G  58% /cygdrive/y
Z:                    599G  347G  253G  58% /cygdrive/z

Where is this path set and how can I get Cygwin to look in the right place for my files?

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