Conversion NTFS->FAT32, external drive failure

Hello there,

I searched the web a whole day for a tool to do the job, and when I finally found Partition Manager, I get an error...
Please help me!

I need to convert a partition on USB-drive from NTFS to FAT32 (the only partition on a 1TB freecom drive).
When I try to start conversion I get this error:

Operation Failed
Invalid cluster size - cluster size out of limits (f.e.: zero, more than 64 sectors or not a power of 2)

Error source: Hard Disk Manager
Error code: 0x10015


I appreciate any hint,
Thanks a lot in advance!

KR,
Frank



Here some details on the disk:

Logical Disk (H

Volume label:
NAS
File system:
NTFS
Type:
Primary
Capacity:
931.5 GB

1.000.202.241.024 Bytes

1.953.520.002 Sectors
Used by data:
834.7 GB (89%)

896.261.062.144 Bytes

1.750.509.887 Sectors
Free space:
96.8 GB (11%)

103.941.178.880 Bytes

203.010.115 Sectors



Logical Disk (H
Logical Disk (H
HDD number:
1
Linux partition number:
1

Volume label:
NAS
Partition ID:
0x07 NTFS
Serial number:
8A1E3AB3
Sectors per boot:
8
Sectors per cluster:
1



Sector No:
Cyl:
Hd:
Sec:
First physical sector:
63
0
1
1
Last physical sector:
1.953.520.064
121600
254
63

Hard disk geometry:

121601
255
63

 

I believe there's a limitation. FAT32 partitions cannot be more than 32GB.

http://support.microsoft.com/kb/314463

 

the disk is fix-installed in a network-hdd, which can only run with fat32 (and the disk has been fat32 formatted previously)

the limitation to 32gb is arbitrarily set by MS, and only forbids win >= xp to create fat partitions > 32gb, which still can read larger partitions.

i would immediately format the drive, if i had the capacity to buffer the 800gb of data which is on it...

any more clues?