I have the following problem to solve: need to copy 6 encrypted movies (50 GB total) onto 200 SanDisk Ultra Fit USB Drives of 64GB capacity. This is a job for a customer.
Then formatted NTFS (to avoid the limit of 4GB per file), I did the encryption process with SanDiskSecureAccess software on one drive. It took 40 minutes and it worked perfectly: entered the password and after a slow decryption process I can open and watch all the movies.
Then I made a disk image with Disk Utility on Mac.
I tried to copy this image to the other flash drives, in order to generate identical clones, but by opening the USB Flash Drive icon in My Vault, it shows me that the content is zero.
How can I solve it without having to encrypt the 200 pendrives, one at a time?
That would be 40 minutes x 200 = 130 hours!!!
What is the best way to do this work, the most rational?
The whole process was performed on an iMac (Retina 5K, 27-inch, 2017, 4.2 GHz Intel Core i7, 48 GB)
Thanks in advance!