![]() As I am no longer willing to take the risk of unencrypted data in a wallet backup, that means switching to CFExpress Type B cards, which offer outstanding performance with APFS encryption. UPDATE: as it turns out, using an APFS encrypted volume on SDXC cards is just too slow (around 34MB/sec), no matter the card reader. Locate your camera card volume in the left at left (here, OWC Ultra), but select the entry containing it (here, OWC Atlas Ultra Media). Open Disk Utility in /Applications/Utilities.ģ. ![]() Alternately, choose Partition to add an encrypted APFS partition on a volume that is already APFS.ġ. These instructions will erase (wipe-out) the contents of the card that you format. This is not technically as secure as encrypting your Mac’s internal SSD on Macs with T2 security chips (the “secure enclave” container for the encryption keys), but those Macs cannot do any better for external volumes anyway, and our topic here is precisely that: encrypted external backup volumes. Recommended camera cards and readers: SDXC and CFExpress Good choices: OWC Atlas FXR, OWC Atlas Dual CFexpress + SD Card Card Reader, OWC Atlas Pro, OWC Atlas Ultra Creating an encrypted volume in Disk Utility Thus this approach is a workaround for Mac users that may be more appealing. That software is increasingly problematic as Apple continues to “harden” macOS security. If you want an encrypted SSD (not a camera card), some brands like Samsung offer hardware encryption eg Samsung T7, but you will have to install special software on every computer that uses it. Encrypted volumes run at full speed or reduced speed, depending on the type of card and card reader.If the size is small, this isn’t really an issue, especially when doing incremental backup/clone. SDXC camera cards work, but are extremely slow for writing (around 34MB/sec).Macs do not have built-in readers for this type of card, so you’ll need to get one. CFExpress Type B camera cards can run at full speed with encryption, depending on card reader.This approach works on any kind of drive including hard drive, SSD, camera card.Windows might have a similar facility (not sure). Here’s how to turn any SSD or camera card into an APFS encrypted volume. However, carrying sensitive data in one’s wallet is not a smart move without encryption, in case the wallet itself is stolen. ![]() Since I always carry my wallet, a backup that can fit into my wallet is super convenient and safely away from any losses elsewhere. I’m a fan of wallet backups when I travel, just in case something burns up my house and/or my travel van is looted. SEND FEEDBACK Related: APFS, backup, camera cards, CFExpress camera storage card, Disk Utility, encryption, how-to, Other World Computing, OWC Atlas camera storage cards, SDXC camera storage card, security, SSD
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