Technical data

SunOS 5.5 File Systems pcfs(7FS)
To mount a PCMCIA pseudo-floppy memory card, use:
mount −F pcfs /dev/dsk/cNtNdNsN /pcfs
Conventions Files and directories created throughPCFS have to comply with the DOS file name con-
vention, which is of the form filename[.ext], where filename consists of from one to eight
upper-case characters, while the optional ext consists of from one to three upper-case
characters. PCFS converts all the lower-case characters in a file name to upper-case, and
chops off any extra characters in filename or ext. When displayingfile names,PCFS only
shows them in lower-case.
One can use either the DOS FORMAT command, or the command:
fdformat −d
in the SunOS system to format a diskette or a PCMCIA pseudo-floppy memory card in
DOS format.
EXAMPLES If you copy a file:
financial.data
from a UNIX file system to a PCFS file system, it will show up as:
FINANCIA.DAT
on theDOS disk.
The following file names:
.login
test.sh.orig
data+
are considered illegal inDOS, and therefore cannot be created through PCFS.
FILES /usr/lib/fs/pcfs/mount
SEE ALSO chgrp(1), chown(1), eject(1), fdformat(1), mount(1M), vfstab(4), pcmem(7D)
x86 Only fdisk(1M)
WARNINGS It is not recommended to physically eject anDOS floppy while the device is still mounted
as a PCFS file system.
x86: When mounting a pcfs file system on a hard disk, the first block on that device must
contain a valid fdisk partition table.
Since PCFS truncates any extra characters in file names and extensions just asDOS, does,
be careful when copying files from a UNIX file system to a PCFS file system. For instance,
the following two files:
test.data1 test.data2
in a UNIX file system will get copied to the same file:
TEST.DAT
modified 2 Mar 1995 7FS-241