USB vs SD - Full partition encryption then volume inside - USB corrupt - SD Good.
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If I encrypt an entire USB drive v2 (1.5 to 4 Mbts) and then I copy in an encrypted volume 2GB + within it and try to decrypt the copied volume it comes up as being corrupt or other. Tried with several different manufacture USBs 8 to 16 GB's.
If I do the same with SD cards (6 and above) it all works fine. No issues what so ever.
Both using the same USB slot. USB thumb drive direct and SD card using adaptor.
Did you try to copy huge files on usb drives formatted as fat16/fat32. You can read file size limits (per file) https://en.wikipedia.org/wiki/Comparison_of_file_systems Please format your flash drive (not the container file) to filesystem that supports large files if this is the problem. (Usually flash drives are shipped with fat32 filesystem.) Just remember to copy/move all your important data off because formatting erases the drive. If this don't help run something like h2testw to make sure that you have real size flash drives.
Thanks but I think you misunderstood the problem. Non the less all formating attempts where conducted with either exfat or NTFS.
I have now abandoned it for it can take an hour and half to fully encrypt a USB then 10 or so minutes to copy a volume inside it. Wasted two days on it with no USB success.
In any case I would say it maybe a USB2 read/write speed thing. In other words when it comes to decrypting the USB > OK but decrypting the Volume inside the USB > to slow so Vera possibly has a timeount and says sorry corrupt. Can't prove though for I don't have anything that is USB3 to compare.
Thanks anyway.