Assuming you backed up your BlueSound Vault using the Backup option they provide, the data stored on the backup drive is in a special format, and cannot be read on most Apple and Windows computers.
According to their notes: "The ext4 storage format is the same format that the Vault uses to store your data. It will not appear on most conventional Mac and Windows PC's."
In other words, you will NOT be able to read the backup drive on your computer; it is intended "for BlueSound backup purposes only" - but, yes, it is a common Linux format.
(Odds are the computer recognizes it as a valid drive but cannot read it.)
What you need to do is to access the files on the Vault from your computer - and then copy them to the SD card.
(Once you have a working share, the drive in the Vault will show up on your computer as "a hard drive", and you'll be able to copy the files.)
You can do this using a standard network share - which will work via a wired Ethernet connection or WiFi.
(But you're NOT going to be able to do it over Bluetooth.)
There is a link at the bottom of the previous article to another article that explains how to do that.
IMPORTANT NOTE:
If you plug that backup drive into your computer, and it says something like "Unable to access drive - do you want me to format it?" YOU MUST TELL IT ***NOT*** TO DO SO.
The computer thinks there's nothing useful on that drive.
If you allow the computer to reformat it, the computer will delete your backup, and the drive will then be blank.
(It won't break the drive - but you will no longer have a backup.)
It's not just a matter of their using "a Linux format"....
There are many different file formats, many of which can only be read on one or another different operating systems, or using specific software.
In order to read that disc your computer specifically needs to handle that particular one.
They may also store the files themselves in a special format to conserve space - which may not be readable by any other device besides theirs.
There are free utilities that will allow Windows to read that file system - but it's easier just to do it via a network share directly from the Vault.
Greetings from Alabama!
O' Patient Emotiva Masters! I beseech thee! I kneel at thy learned feet....
I recently purchased a BlueSound Vault 2i. I ripped about 200 Gigs of CDs to the unit as FLAC files.
I'm VERY pleased with output to a pair of AudioEngine A2s. The Vault ripped results are FAR superior to old computer rips and Pandora through the computer.
I backed up the Vault 2i to a Seagate 2TB ext HD. From reading the BlueSound blogs, I believe the backup is in a LINUX format. I could be very wrong.
When I connect the Ext HD to my computer, I can see the Ext HD as storage.
I would like to copy and transfer the FLAC files to a 512GB SD card and travel with better music.
I've read somewhat similar posts on the BlueSound site but none provide a precise process to secure my files.
I would greatly appreciate any help from more educated computer folks that might assist me in this endeavor.
Thanks in advance, Steve.