2TB microSD card in a Linux phone ⊠what a great time to become like Batman
Nor Amazon. Nor other places I have looked.
However if I found one, I donât think I would like the price. Almost as much again as the phone itself? I will be happy with 1TB or even 512GB (which are both available, and both more or less affordable).
I donât know what âsupportâ means unless it has been tested.
For the highest power of 2, that is within the theoretical range, to work it does require no crappy software / firmware / hardware that interprets an unsigned value as a signed value - and lots of other things can go wrong besides.
yes they are likely to cost an arm and a leg but what would you say if i told you that there are some variants of the same model and size that are marketed as âlong-lastingâ and âfor-harsh-environmentsâ that also get less warm and have better write life cycles ⊠they are twice as much usually. that means both arms and both legs
Thatâs savageâŠcanât wait to get mine.
Read the reviews on Amazon of one suspiciously cheap high capacity ”SDXC card (I forget which one but either 512GB or 1TB) and all the reviews are saying that the card simply doesnât work! You would be buying a relatively expensive small rectangle of plastic, but donât expect to use it to store data other than what you might handwrite on it. LOL.
Iâll be sticking with a mainstream brand at a credible, if higher, price from a reputable seller.
SanDisk is a pretty good brand isnât it? This is Best Buy-good reviews. itâs on Amazon also- who cares what their reviews say , itâs a good card right?
Thatâs because the current highest-capacity, commercially available microSD card is 1 TB.
Best Buys is like $250! Thank God I donât need anywhers near that much. Eventually price will drop to something like $49.99! What a ripoff
And the obvious answer isâŠ
Yes
The one I was talking about was basically unbranded (generic), and all the reviews say that it simply doesnât work and the price was very âgoodâ - so, yes, I care what the reviews of that card say.
You can say that about basically all IT technology. Does that make it a ripoff when it is first introduced? Itâs complicated.
One way of looking at it is to look at (for storage) price per GB (say) and ask what premium you are paying for the higher capacity card.
For sure, if you donât want to spend that much and you donât need that much storage then donât.
It is likely that whatever âaffordableâ card you bought today for $X, you will be able to upgrade to a card with twice the capacity in the foreseeable future for another $X.
512 GB card arrived: check
file system set up: check
music collection synced to it: check
Now, what am I missing?
In case it comes up, I was reminded once again of the annoyances / delights (you choose) of ext4lazyinit
.
This will particularly be a problem with people initialising larger cards. (Cards will arrive with an exfat
file system, which almost certainly is not what anyone would want. So setting up the file system is the first thing that you will have to do.)
The symptoms of ext4lazyinit
(which is the default) are that the file system creation will complete almost immediately ⊠and then a system process called ext4lazyinit
will grind away for eternity actually initializing the inode table, the light on the card reader (if you have a light) will flash away interminably, and you have no progress indicator, no way of knowing how long until it finishes, ⊠and these cards are not fast.
- - KIOXIA EXCERIA HIGH ENDURANCE (BiCS FLASHâą) Max. Write Speed(s):
â 32G ”SDHC †30 MB/s (similar to my current Samsung PRO Endurance card)
â 64G/128G ”SDXC †65 MB/s
â 256G ”SDXC †85 MB/s
- - KIOXIA EXCERIA PLUS Max. Write Speed(s):
â 32G ”SDHC, 64G/128G ”SDXC †65 MB/s
â 256G/512G ”SDXC †85 MB/s
Yesterday I compared above microSD cards and asked myself why would be to recommend above two (within this thread)? But rather Iâd like to rethink here why, or actually just go ahead and buy (preferably ) ordinary (simple) microSD card like KIOXIA EXCERIA with following (deducted) feature:
Is it support for CPRM an important consideration (before buying an high-capacity ”SD card) for all of our potential (personal) usage (if not public media content related) within a Linux phone? Is it KIOXIA EXCERIA indeed the one to recommend for non-CPRM content on Librem 5, non-CPRM private data requirement(s) friendly (up to someoneâs own preference), as GNU site describes here (related to DRM, of course)?
Besides, I beleive that Micron i300 microSDXC cards (128GB to 1TB) are non-CPRM too (with CSD related value of 000b
), yet another ones under SD specs version 6.10.
Well, sorry if bothering, but lollypop
users probably like to stick, ensure they are using CPRM enabled microSD cards, just like here:
P.S. Feel free to link this post of mine somewhere else if here not 100% adequate, if anything needs to be added (perhaps, without investing into, sort of mandatory, CPRM security support) by admitting that I have no non-CPRM usage experience (and therefore asking for some quality opinion of yours).
CPRM must be an anti-feature.
What command do I use to find out whether my uSD card does or does not support CPRM?
All of my content is audio and none of it is subject to DRM - so, support or no support for CPRM, everything should (and so far does) work.
Yes, just recently, since March 2018, âourâ authorities made CPRM feature optional (avoidable) with SD specification version 6.10. Non-CPRM ”SD cards are, I guess (probably), just cheaper variants of technically very same, but encrypted counterpart. Link to another CPRM awareness reading (.pdf file): âHow CPRM Worksâ is here: www.4centity.com/document.aspx?doc=4aae4d66-a727-449c-8675-119343c624a0
This question was some kind of challenge for me, so up to my understanding below one should work:
apt search mmc-utils
cd /sys/class/mmc_host/mmc0/
ls -l
- - look for exact mmc0:XXXX
folder name
sudo mmc scr read /sys/class/mmc_host/mmc0/mmc0:XXXX
type: âSDâ
version: SD 3.0x
bus widths: 4bit, 1bit,
Where version: SD 3.0x relates to SD Security Specification Ver.3.00 Compliant (CPRM Based).
Please change :XXXX
as required. Same output was for 8GB and 32GB microSD cards Iâve tested, pointing out they are SDXC. SDHC should output version: SD 2.0x
(will check another time).
Only gives:
type: âMMCâ
I do have a uSD card inserted (permanently). Do you have your phone yet? or you are testing this on a regular computer?
There is also âmmc1â but that gives:
Unknown type: âSDIOâ
Update: I tested that command on a regular computer that has a built-in SD card reader and it worked the way it did for you. Hypothesis: The uSD card reader on the Librem 5 is accessed indirectly via USB and so some shell commands that may purport to interact directly with an SD device wonât work or arenât even usable. The mmc0 referenced above is the internal eMMC drive, not the uSD drive!
It was proofed on PinePhone with Mobian on it (and on regular laptop with SD slot). Command is looking for scr
file inside mmcX:YYYY folder.
Thanks for Update!
EDIT: @irvinewade, I donât see this but Librem 5 path with scr
file (by looking inside file manager) might exist inside mmc2
folder (meaning boot
order is not the same as within the PinePhone)? And mmc1
on Librem 5 should point to USB Type C port (probably).
Yes, the uSD card reader uses a USB 2.0 bus connected to the Microchip USB2642, according to page 19 of the schematics.