A loop mounted FAT filesystem.
* From: Klaus <klaus.doering999@gmail.com>
* Date: Tue, 04 Jun 2013 08:48:22 +0100
> I didn't understand why you used the -"C" option in
> this case instead of just giving the device name ?
My objective is to have a FAT filesystem residing in an ext3
file in wheezy.
Consequent to the difficulty with "mkdosfs -C ..." I've tried
working through a case similar to "Floppy Disk Images With FAT16".
http://wiki.osdev.org/Loopback_Device#Floppy_Disk_Images_With_FAT16
# 1. Make the empty image file.
peter@dalton:~$ dd if=/dev/zero of=FATholder bs=512 count=288000
288000+0 records in
288000+0 records out
147456000 bytes (147 MB) copied, 4.55382 s, 32.4 MB/s
# 2. Set it up for mounting.
root@dalton:/home/peter# losetup /dev/loop0 FATholder
# 3. Create the FAT filesystem.
root@dalton:/home/peter# mkfs.vfat
mkfs.vfat 3.0.13 (30 Jun 2012)
Loop device does not match a floppy size, using default hd params
# 4. Show that the user is allowed to mount the image;
root@dalton:/home/peter# grep loop /etc/fstab
/dev/loop0 /home/peter/FATmount vfat defaults,noauto,user 0 0
# ... and mount it.
peter@dalton:~$ mount /dev/loop0
peter@dalton:~$ mount | grep loop
/dev/loop0 on /home/peter/FATmount type vfat (rw,nosuid,nodev,noexec,relatime,ui
d=1000,gid=1000,fmask=0022,dmask=0022,codepage=cp437,iocharset=utf8,shortname=mi
xed,errors=remount-ro,user=peter)
# 5. Confirm that the virtual FatFS can be written to.
peter@dalton:~/Work$ cp rawrite.exe ~/FATmount
peter@dalton:~/Work$ ls -l ~/FATmount/raw*
-rwxr-xr-x 1 peter peter 12702 Jun 19 09:37 /home/peter/FATmount/rawrite.exe
Conclusion: success in five steps is better than failure in one step.
Thanks for the feedback, ... Peter E.
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