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Operating Systems Linux C++ Code to Access Linux Hard Disk Sectors (with a LoopBack Virtual Hard Disk) Post 302491445 by shen747 on Thursday 27th of January 2011 12:49:38 PM
Old 01-27-2011
Hi Corona688,

I found the following article through a Google search(while awaiting your reply) on creating a floppy drive with the loop back device and got it mounted.


CREATING A Virtual MS-DOS Floppy Inside Linux
.

Is the above approach correct ?.
Anyways now I'm back where I began as of how can I create files & folders inside the loop back device. Now with the MS-DOS FAT-16 file system. If you have any direct pointers to get me started on implementing this it would be a great help Smilie.
 

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mount_pcfs(1M)						  System Administration Commands					    mount_pcfs(1M)

NAME
mount_pcfs - mount pcfs file systems SYNOPSIS
mount -F pcfs [generic_options] [-o FSType-specific_options] special | mount_point mount -F pcfs [generic_options] [-o FSType-specific_options] special mount_point DESCRIPTION
mount attaches an MS-DOS file system (pcfs) to the file system hierarchy at the mount_point, which is the pathname of a directory. If mount_point has any contents prior to the mount operation, these are hidden until the file system is unmounted. If mount is invoked with special or mount_point as the only arguments, mount will search /etc/vfstab to fill in the missing arguments, including the FSType-specific_options; see mount(1M) for more details. The special argument can be one of two special device file types: o A floppy disk, such as /dev/diskette0 or /dev/diskette1. o A DOS logical drive on a hard disk expressed as device-name:logical-drive , where device-name specifies the special block device-file for the whole disk and logical-drive is either a drive letter (c through z) or a drive number (1 through 24). Examples are /dev/dsk/c0t0d0p0:c and /dev/dsk/c0t0d0p0:1. The special device file type must have a formatted MS-DOS file system with either a 12-bit, 16-bit, or 32-bit File Allocation Table. OPTIONS
generic_options See mount(1M) for the list of supported options. -o Specify pcfs file system specific options. The following options are supported: foldcase|nofoldcase Force uppercase characters in filenames to lowercase when reading them from the filesystem. This is for compatibility with the pre- vious behavior of pcfs. The default is nofoldcase. FILES
/etc/mnttab table of mounted file systems /etc/vfstab list of default parameters for each file system ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWesu | +-----------------------------+-----------------------------+ SEE ALSO
mount(1M), mountall(1M), mount(2), mnttab(4), vfstab(4), attributes(5), pcfs(7FS) NOTES
If the directory on which a file system is to be mounted is a symbolic link, the file system is mounted on the directory to which the sym- bolic link refers, rather than on top of the symbolic link itself. SunOS 5.10 24 Nov 2003 mount_pcfs(1M)
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