bug#16885: Not recognizing FAT32 partition

[Edward Diener]

On 2/27/2014 2:22 PM, Brian C. Lane wrote:> On Thu, Feb 27, 2014 at 
03:40:47AM -0500, Edward Diener wrote:
>> As a follow up to my report, here is the 'parted' display for the
>> disk in which the FAT32 partition is not being recognized using
>> 'parted 3.1'.
>>
>> Model: ATA WDC WD20EARX-00P (scsi)
>> Disk /dev/sdc: 2000GB
>> Sector size (logical/physical): 512B/4096B
>> Partition Table: msdos
>> Disk Flags:
>>
>> Number  Start   End     Size    Type      File system Flags
>>   1      2065kB  767GB   767GB   extended lba
>>   5      2097kB  53.7GB  53.7GB  logical   ext4
>>   6      53.7GB  107GB   53.7GB  logical   ext3
>>   7      107GB   161GB   53.7GB  logical   ext4
>>   8      161GB   215GB   53.7GB  logical   ext3
>>   9      215GB   269GB   53.7GB  logical   ext4
>> 10      269GB   321GB   52.4GB  logical   ext3
>> 11      321GB   373GB   52.4GB  logical   ext4
>> 12      373GB   426GB   52.4GB  logical   ext3
>> 13      426GB   485GB   59.6GB  logical   ext3
>> 14      485GB   540GB   55.1GB  logical
>> 15      540GB   557GB   16.8GB  logical   linux-swap(v1)
>> 16      557GB   610GB   52.5GB  logical   ext4
>> 17      610GB   663GB   53.7GB  logical   ext4
>> 18      663GB   716GB   52.4GB  logical   ext4
>> 19      716GB   767GB   51.2GB  logical   ext4
>>   2      1680GB  2000GB  320GB   primary   ntfs boot, hidden
>>
>> The FAT32 partition is Number 14. The drive is /dev/sdc on Fedora 20.
>> If more information is wanted, please ask.
>
> parted's filesystem detection should not be depended on, it is for
> cosmetic purposes only. I'm not sure what gparted is doing, but it
> shouldn't be failing because of libparted's fs display.

See the discussion about this on GParted forum at 
http://gparted-forum.surf4.info/viewtopic.php?id=16878. The partiton was 
/dev/sdb14 with GParted live. The final error message, from 'libparted' is:

"Could not detect file system."

>
> Also, how was the fs created?

Created orginally from Windows, not Linux.

> If I use mkfs.vfat on a logical partition
> it shows up as fat32 in my tests.