So, you have had a great day flying outdoors. You reach home, and all excited to see your footage, you pop out your SD card - only to find that you have lost all your data. What could have been a fantastic day ended up as a terrible one.
A certain amount of prudence and pre-planning can ensure that do not end up with a corrupt micro SD card. In this blog post, we give you some great practical tips that will help you avoid this common problem that is plaguing many of your counterparts.
It is really important that you pick the right SD card. Simply put, you want a card that can read and write first enough. We recommend using a SD card with a minimum write speed of 90 Mbps. Now, a word of caution here. Many drone pilots end up confusing MegaBytes (MB) with MegaBits (Mb).
Remember, 1 MB = 8 Mb
So, if we round up the write speed to 100Mbps, this translates to roughly 12.5 MB/s. Now, the Phantom 4 Pro can shoot 4K at 60 fps at a maximum of 100Mbps.
When you go out to pick your SD card, you need to pick one that is marked “UHS” or “Ultra High Speed”. UHS cards come in two generations – UHS-I and UHS-III. Further, UHS cards can be segregated into 4 classes – 2, 4, 8 and 10. The minimum write speed of a UHS-I (Class 10) card is 10 MB/s. Whereas the minimum write speed of a UHS-3, V30 card is 30 MB/s.
Recently, the SD association came out with their newest and fastest speed class – Video Speed Class. So, if you look closely, you will see a “V30” or a “V10” boldly printed on your UHS card. Higher speed classes of V60 (Min write speed – 60 MB/s) and V90 (Min write speed – 90 MB/s) are also available. But these are a bit of an overkill for our applications.
I was going through the various online forums, and I found that drone pilots are using cards ranging from 16 GB to 256 GB. DJI recommends 64 GB cards for your Phantom 4. Cards larger than 128 GB are not compatible and have a high chance of corrupting. A 16 GB card is too small if you are shooting in 4K @ 60 fps. We do not recommend using a 256 GB card for the simple reason that if the card goes bad, you could lose all your data. Remember - in order to use a UHS-1 card, a UHS compatible device is necessary
Pro Tip – Many drone pilots have reported their Lexar cards going corrupt. So, we recommend you stick to Sandisk Cards.
What do you if your SD card goes corrupt in spite of taking all necessary precautions? Well, in case your card is still functional, there is a high chance that you can still recover your date. Click here for detailed step by step instructions on how to recover your data.
In case your SD card is not functional, you will have to send your card to a data recovery company. This is the data recovery company recommended by Sandisk.
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