Jim Meyering a écrit :
Jean-Christian de Rivaz wrote:
...
Your patch work fine, thank you for providing it.
r...@point:/home/jcdr/parted-git/parted/build-O0# parted/parted
/dev/sdb print
Model: disk2go PURE II (scsi)
Disk /dev/sdb: 5243kB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Number Start End Size Type File system Flags
1 5120B 5243kB 5238kB primary
The debug capture in attachment prove that your logic is the right one
for this case.
Now I just wonder if parted should display FAT16 in the file system
field. Because fdisk do it:
r...@point:/home/jcdr/parted-git/parted/build-O0# fdisk -l /dev/sdb
Disk /dev/sdb: 5 MB, 5242880 bytes
1 heads, 10 sectors/track, 1024 cylinders
Units = cylinders of 10 * 512 = 5120 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
/dev/sdb1 2 1024 5115 6 FAT16
And parted do it for the /dev/sdc (the regular storage device of this
USB key):
r...@point:/home/jcdr/parted-git/parted/build-O0# parted/parted
/dev/sdc print
Model: disk2go PURE II (scsi)
Disk /dev/sdc: 2142MB
Sector size (logical/physical): 512B/512B
Partition Table: loop
Number Start End Size File system Flags
1 0.00B 2142MB 2142MB fat16
Perhaps it should, depending on what it means.
Is it reporting just the magic number, or is it reporting
the existence of a file system of that type?
It seems that 4MiB is the minimum size of a FAT16 file system,
and at 2.5MiB, yours is well under the minimum, so with the latter
interpretation, parted is correct not to report it as one.
Sorry, I failed to find where this /deb/sdb1 partition is 2.5MiB in
size. Seem to be 5.1MiB (5238kB, or (1024-2+1)*512*10/2.0**20=4.99MiB
according to fdisk) to me ( > 4MiB ). This is also confirmed by the
system while mounting the /deb/sdb1 partition:
r...@point:/home/jcdr/parted-git/parted/build-O0# mount /dev/sdb1 /mnt
r...@point:/home/jcdr/parted-git/parted/build-O0# df -h /dev/sdb1
Filesystem Size Used Avail Use% Mounted on
/dev/sdb1 5.0M 0 5.0M 0% /mnt
I also tryed with a FAT12 partition type witch is know to work for
floppy disk as small as 720kiB and got the same result:
r...@point:/home/jcdr/parted-git/parted/build-O0# fdisk -l /dev/sdb
Disk /dev/sdb: 5 MB, 5242880 bytes
1 heads, 10 sectors/track, 1024 cylinders
Units = cylinders of 10 * 512 = 5120 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
/dev/sdb1 2 1024 5115 1 FAT12
r...@point:/home/jcdr/parted-git/parted/build-O0# parted/parted /dev/sdb
print
Model: disk2go PURE II (scsi)
Disk /dev/sdb: 5243kB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Number Start End Size Type File system Flags
1 5120B 5243kB 5238kB primary
Now you could argument that FAT12 is not supported by parted, but the
FAT16 result on a 5MiB partition is still a strange result to me.
Jean-Christian de Rivaz
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