But did you create the vfat partition in Knoppix? I'd be inclined to back up all your important data and reformat that partition through Windows.The data partition is also in FAT 32 and so windows should be able to see it.
I have 3 partitions in my HD knoppix, windows xp and a data partition. When I did a HD install of Knoppix,i was able to see all partitions. However, when i rebooted to windows, the data partion cannot be found. I know the partition still exists since I can see it in knoppix and the boot loader shows it as a windows partition ()i tried booting it but no luck since there was no OS just data) The data partition is also in FAT 32 and so windows should be able to see it.
But did you create the vfat partition in Knoppix? I'd be inclined to back up all your important data and reformat that partition through Windows.The data partition is also in FAT 32 and so windows should be able to see it.
Check using cfdisk that it is 'vfat' and not 'vfat hidden'. QTparted seems to make vfat hidden at times.
OWC Guardian Maximus Raid Enclosure SATA Hard Drive FireWire
$36.99
Dell EMC 092GD6 Broadcom 9305-16i LSI Quad Port 4 Port SAS RAID Controller
$84.99
Yottamaster 2 Bay RAID Hard Drive Enclosure USB 3.1 For 2.5" SATA HDD SSD UASP
$56.25
Yottamaster 5 Bay RAID Hard Drive Enclosure Type-C B For 2.5" 3.5" SATA HDD SSDs
$131.59
Dell PERC H330 PCIe 3.0 x8 RAID Storage Controller 4Y5H1 High Profile
$17.99
LSI 8 Port 6Gbps PCIe 3.0 External SAS RAID Card w/ 1GB CacheVault & Low Profile
$29.00
RAID Controller Dell HYM6Y PERC H750 8GB NV Low Profile RAID Controller Card -
$26.88
LSI MegaRAID 9361-8i 12Gbps PCIe 3 x8 SATA SAS 3 8 Port RAID + BBU & CacheVault
$39.00
Yottamaster 2 Bay RAID Hard Drive Enclosure USB 3.1 Type B For 3.5" SATA HDDs
$69.91
ACASIS 2.5/3.5 inch 2 Bay SATA USB 3.0 Hard Drive Disk HDD SSD Enclosure 4 RAID
$54.66