PSA: formatting SD card as adoptable storage has risks!

mahers

Well-known member
Jul 12, 2010
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Hi All!

For the second time since I bought the 10 at launch, the phone has displayed a message "SD Card not found". In both instances, the card was formatted as adoptable storage. The first time this happened, the card was useless and I lost everything on it (most of which I had backed up elsewhere). That was a SanDisk card. I thought the card was bad, so I replaced it with a different brand that had stellar reviews. This morning, I got the same error message. I turned off the phone and restarted it, and luckily, the card was still recognized and my data was safe. I ended up migrating the data back to the phone's storage and reformatting the card as external storage. Despite what it says, the phone WILL NOT migrate all your data to the phone from the card!!! Make a backup before you reformat!!!

I have a feeling one of two things is happening: A) Google hasn't perfected the adoptable storage feature, and it is unstable. Or B) HTC messed it up and it eventually craps out.

Either way, a word to the wise: opt for external storage and avoid the headache. I had to re-download pictures, videos, documents and music/sounds each time and set up custom contacts and app notifications all over again. It's a hassle I don't want to deal with every few months. I am crossing my fingers that using the card as external storage prevents this from happening again!

P.S. Visual Voicemail never worked for me, and when I formatted the card as external, a folder called Visual Voicemail appeared on the card, and voila! it suddenly works! Very odd.
 
I've never experienced any issue with reading the SD on the 10 or the A9 set to adoptable storage.
 
That's great for you...not so much for me. I don't mess around with the cards, or do anything that would prompt this happening. Just giving a heads up to others in case it's not just my phone. This is the first time I have ever had any sd card issue (or an HTC phone), but since adoptable storage was never an option for me prior, it's easy for me to point to it as a potential cause.
 
Actually, if I am right in what the Adaptable Memory actually does, everything you went through isn't a glitch or anything, just the system doing what it knows to do. Look up how a RAID 0 array works, it's a method of linking 2 separate hard drives. And read up on formatting your cards. I would think, the old card that you replaced, is probably still good, just reformat it as ExFAT and should be good to go.
 

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