viofu
New Member
I just tried the SanDisk Ultra 200GB (A1) and it does not work ("Memory error"). You can get it running by creating a 128 GB primary partition on it and formatting this with fat32 (mkfs.vfat).
This indicates that the limitation is purely in software as other devices have no problem using the same card with the full capacity (also formatted as fat32).
Viofo: Would be nice to have support for bigger cards so that I can record longer trips without having to swap SD cards.
If I can help with adapting the firmware let me know, I can code C/C++/Java and would be happy to alpha/beta-test as well.
fsck.vfat -v /dev/sdb1 output:
128GB partition - WORKING:
System ID "mkfs.fat"
Media byte 0xf8 (hard disk)
512 bytes per logical sector
32768 bytes per cluster
64 reserved sectors
First FAT starts at byte 32768 (sector 64)
2 FATs, 32 bit entries
16777216 bytes per FAT (= 32768 sectors)
Root directory start at cluster 2 (arbitrary size)
Data area starts at byte 33587200 (sector 65600)
4193279 data clusters (137405366272 bytes)
63 sectors/track, 255 heads
2048 hidden sectors
268435456 sectors total
183.4 GB partition - NOT WORKING:
System ID "mkfs.fat"
Media byte 0xf8 (hard disk)
512 bytes per logical sector
32768 bytes per cluster
64 reserved sectors
First FAT starts at byte 32768 (sector 64)
2 FATs, 32 bit entries
24051712 bytes per FAT (= 46976 sectors)
Root directory start at cluster 2 (arbitrary size)
Data area starts at byte 48136192 (sector 94016)
6006371 data clusters (196816764928 bytes)
1 sectors/track, 4 heads
2048 hidden sectors
384501760 sectors total
This indicates that the limitation is purely in software as other devices have no problem using the same card with the full capacity (also formatted as fat32).
Viofo: Would be nice to have support for bigger cards so that I can record longer trips without having to swap SD cards.
If I can help with adapting the firmware let me know, I can code C/C++/Java and would be happy to alpha/beta-test as well.
fsck.vfat -v /dev/sdb1 output:
128GB partition - WORKING:
System ID "mkfs.fat"
Media byte 0xf8 (hard disk)
512 bytes per logical sector
32768 bytes per cluster
64 reserved sectors
First FAT starts at byte 32768 (sector 64)
2 FATs, 32 bit entries
16777216 bytes per FAT (= 32768 sectors)
Root directory start at cluster 2 (arbitrary size)
Data area starts at byte 33587200 (sector 65600)
4193279 data clusters (137405366272 bytes)
63 sectors/track, 255 heads
2048 hidden sectors
268435456 sectors total
183.4 GB partition - NOT WORKING:
System ID "mkfs.fat"
Media byte 0xf8 (hard disk)
512 bytes per logical sector
32768 bytes per cluster
64 reserved sectors
First FAT starts at byte 32768 (sector 64)
2 FATs, 32 bit entries
24051712 bytes per FAT (= 46976 sectors)
Root directory start at cluster 2 (arbitrary size)
Data area starts at byte 48136192 (sector 94016)
6006371 data clusters (196816764928 bytes)
1 sectors/track, 4 heads
2048 hidden sectors
384501760 sectors total