Pimaxin
Posts: 40
Joined: Sat Jan 19, 2019 7:34 pm

Are there any disadvantages of using a microsd card above 32GB on the Pi 4?

Sun Aug 11, 2019 2:25 am

If I use a 64GB, and format it to fat32, are there any other differences besides the size in 32GB vs 64GB on the Pi 4B?

I ask because I see a lot of blogs and forums say for most projects, it is recommended to start with 32GB but 64GB is only $5 more so why wouldn't I get 64GB even if I don't use it all? At least I'll have a piece of mind that I have more storage if needed even if I'm just using 30gb for a project..

W. H. Heydt
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Location: Vallejo, CA (US)

Re: Are there any disadvantages of using a microsd card above 32GB on the Pi 4?

Sun Aug 11, 2019 4:32 am

You only need to reformat if you use NOOBS. If you write the image directly with dd or Etcher, the initial format doesn't matter because it will be overwritten. With the current release, you'll have a FAT partition at the beginning of the card of about 256MB (this will be visible to Windows) and the rest will be an EXT4 partion (NOT visible to Windows) that will get expanded on first boot to take up *all* of the rest of the card.

As a result, in either case, you will as much storage space in the root (EXT4) partition as is available on the card, less the /boot partition, which is (relatively speaking) small.

Note: If your project really needs to use 30GB, you'd better either use a 64GB card, or store your project data on some other device, such as a USB stick, SSD, HDD, or network storage (NAS). The Raspbian system will use around 5GB on it's own (unless you use Raspbian Lite, in which case, it'll take about 1.5GB).

jahboater
Posts: 4675
Joined: Wed Feb 04, 2015 6:38 pm

Re: Are there any disadvantages of using a microsd card above 32GB on the Pi 4?

Sun Aug 11, 2019 6:36 am

Yes.

Looking at this:

https://www.amazon.co.uk/SanDisk-microS ... way&sr=8-4

it seems that up to 128GB is cheap now, with a steep price rise per GB after that.

Avoid NOOB's and you will be fine with these larger cards.
I use 64Gb and 128GB Sandisk ultra A1.

(make sure you get an A1 class card).

aBUGSworstnightmare
Posts: 1491
Joined: Tue Jun 30, 2015 1:35 pm

Re: Are there any disadvantages of using a microsd card above 32GB on the Pi 4?

Sun Aug 11, 2019 7:32 am

I recently bought 64GB Sandisk cards for 6,99EUR/pcs here https://www.conrad.de/de/p/sandisk-ultr ... 26764.html

Cheaper as some 32GB cards

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HawaiianPi
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Location: Aloha, Oregon USA

Re: Are there any disadvantages of using a microsd card above 32GB on the Pi 4?

Sun Aug 11, 2019 8:09 am

Pimaxin wrote:
Sun Aug 11, 2019 2:25 am
If I use a 64GB, and format it to fat32, are there any other differences besides the size in 32GB vs 64GB on the Pi 4B?
Larger cards often have faster performance, and a card with more capacity than you need will have more room for wear leveling, which would make it last longer. Also, flash memory devices suffer from reduced performance as they fill up, so using 30GB on a 32GB card will result in even slower performance.

On the other hand, for the price of a 128GB or 256GB A1 micro SD card you could probably get an SSD, which should be even faster.

aBUGSworstnightmare wrote:
Sun Aug 11, 2019 7:32 am
I recently bought 64GB Sandisk cards for 6,99EUR/pcs ... Cheaper as some 32GB cards
Cheap , but not the best performer (A1 performance rated cards are usually much faster when used as an OS drive, due to higher IOPS).
My mind is like a browser. 27 tabs are open, 9 aren't responding,
lots of pop-ups...and where is that annoying music coming from?

pica200
Posts: 138
Joined: Tue Aug 06, 2019 10:27 am

Re: Are there any disadvantages of using a microsd card above 32GB on the Pi 4?

Sun Aug 11, 2019 11:31 am

I use 64 GB aswell. Gives the card much more headroom for wear leveling even if i will never fill it up. I was actually shocked how cheap 64 GB has become. Another thing you can do is enable TRIM in /etc/fstab and then run a "sudo fstrim -a -v" once. This actually increased the speed of my SanDisk A1 card quite a bit. It boots so fast now it doesn't even show the white splash shortly before the desktop is loading.

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