I have a thumb drive which is formatted to FAT32 but not recognized in Windows. Using "testdisk" I can find the partition OK, but testdisk reports: Disk /dev/sdc - 30 GB / 28 GiB - CHS 29327 64 32 Current partition structure: Partition Start End Size in sectors Warning: number of heads/cylinder mismatches 255 (FAT) != 64 (HD) Warning: number of sectors per track mismatches 63 (FAT) != 32 (HD) 1 * FAT32 LBA 0 1 1 29327 63 32 60063712 [DATADISC] If I select the partition and view files then i see what I expect to see, and I can manually copy off individual files from there. So from a data recovery perspective I have everything I need. However, if I try writing the partition information back using testdisk the thumb drive is still not recognised in Windows and if I reopen it in testdisk it reports the same issues. I tried changing geometry to 255/63 as testdisk suggested, but then analyse says "Bad relative sector". What do I need to do so that the disk is recognised in Windows? Mark -- Mark Rogers // More Solutions Ltd (Peterborough Office) // 0344 251 1450 Registered in England (0456 0902) 21 Drakes Mews, Milton Keynes, MK8 0ER