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> microSD size
geomannie
post Jan 9 2018, 06:40 AM
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Hi,

I am not if this has been answered, but can anyone confirm the size of microSD that the Gemini will support?

Thanks
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Varti
post Jan 9 2018, 06:47 AM
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QUOTE(geomannie @ Jan 9 2018, 03:40 PM) *
Hi,

I am not if this has been answered, but can anyone confirm the size of microSD that the Gemini will support?

Thanks

Maximum 256GB, this has been confirmed by Planet. Actually, it is not known if this is because of a hardware limitation, a software only one (hence, this limitation will be removed with a later kernel), or if they are just claiming that the don't have tested SD cards with a bigger capacity, so they can't confirm if they are supported or not. It would be anyway interesting to try 512GB or bigger cards, too bad they are still very expensive (last time I checked they were sold for around 300 euros).

Varti
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geomannie
post Jan 9 2018, 07:55 AM
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QUOTE(Varti @ Jan 9 2018, 06:47 AM) *
QUOTE(geomannie @ Jan 9 2018, 03:40 PM) *
Hi,

I am not if this has been answered, but can anyone confirm the size of microSD that the Gemini will support?

Thanks

Maximum 256GB, this has been confirmed by Planet. Actually, it is not known if this is because of a hardware limitation, a software only one (hence, this limitation will be removed with a later kernel), or if they are just claiming that the don't have tested SD cards with a bigger capacity, so they can't confirm if they are supported or not. It would be anyway interesting to try 512GB or bigger cards, too bad they are still very expensive (last time I checked they were sold for around 300 euros).

Varti

Thanks a bunch! However, I am now confused by microSD standards. I see that one can have SD, SDHC or SDXC. Any thoughts as to which the Gemini will support or which is best?

Cheers
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depscribe
post Jan 9 2018, 08:19 AM
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QUOTE(Varti @ Jan 9 2018, 06:47 AM) *
Maximum 256GB, this has been confirmed by Planet. Actually, it is not known if this is because of a hardware limitation, a software only one (hence, this limitation will be removed with a later kernel), or if they are just claiming that the don't have tested SD cards with a bigger capacity, so they can't confirm if they are supported or not. It would be anyway interesting to try 512GB or bigger cards, too bad they are still very expensive (last time I checked they were sold for around 300 euros).

Varti


Doing a little price comparison, the sweet spot for Micro-SD cards right now is 128GB, of which good ones can be had for ~$40. 256MB equivalents are three times as much. My thought is to use a 64GB one I already have until the price of the 256s comes down, but my needs for this device involve some but not vast amounts of data storage.
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Grench
post Jan 9 2018, 11:57 AM
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QUOTE(geomannie @ Jan 9 2018, 09:55 AM) *
Thanks a bunch! However, I am now confused by microSD standards. I see that one can have SD, SDHC or SDXC. Any thoughts as to which the Gemini will support or which is best?

Cheers


The long answer would entail a history of TransFlash, MMC, SD, SDHC, SDXC, UHS-I and UHS-II.

The short answer is: Anything labeled microSDHC or labeled microSDXC UHS-I should work fine.

Normal caveats for purchasing flash media apply - reputable brand from a reputable source. There are still a lot of fakes out there.

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geomannie
post Jan 10 2018, 07:11 AM
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Thanks. Reputable brand SDHC card now ordered in anticipation.

Cheers

QUOTE(Grench @ Jan 9 2018, 11:57 AM) *
QUOTE(geomannie @ Jan 9 2018, 09:55 AM) *
Thanks a bunch! However, I am now confused by microSD standards. I see that one can have SD, SDHC or SDXC. Any thoughts as to which the Gemini will support or which is best?

Cheers


The long answer would entail a history of TransFlash, MMC, SD, SDHC, SDXC, UHS-I and UHS-II.

The short answer is: Anything labeled microSDHC or labeled microSDXC UHS-I should work fine.

Normal caveats for purchasing flash media apply - reputable brand from a reputable source. There are still a lot of fakes out there.

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speculatrix
post Jan 10 2018, 09:03 AM
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AIUI, SDXC cards are identical to SDHC, only the cards come formatted as exFAT rather than FAT.

you can format FAT32 file systems a lot larger with linux than with Windows, the latter simply refuses!
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Grench
post Jan 10 2018, 09:15 AM
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QUOTE(geomannie @ Jan 10 2018, 09:11 AM) *
Thanks. Reputable brand SDHC card now ordered in anticipation.

Cheers

QUOTE(Grench @ Jan 9 2018, 11:57 AM) *
QUOTE(geomannie @ Jan 9 2018, 09:55 AM) *
Thanks a bunch! However, I am now confused by microSD standards. I see that one can have SD, SDHC or SDXC. Any thoughts as to which the Gemini will support or which is best?

Cheers


The long answer would entail a history of TransFlash, MMC, SD, SDHC, SDXC, UHS-I and UHS-II.

The short answer is: Anything labeled microSDHC or labeled microSDXC UHS-I should work fine.

Normal caveats for purchasing flash media apply - reputable brand from a reputable source. There are still a lot of fakes out there.



I hope you mean microSDHC. An SDHC card isn't going to physically fit in the microSD slot.
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depscribe
post Jan 10 2018, 10:18 AM
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QUOTE(speculatrix @ Jan 10 2018, 09:03 AM) *
AIUI, SDXC cards are identical to SDHC, only the cards come formatted as exFAT rather than FAT.

you can format FAT32 file systems a lot larger with linux than with Windows, the latter simply refuses!


Has Linux found away to read exFAT natively? When I occasionally have had the need to read an exFAT card I've had to employ something called exfat-fuse, which was cooked up at, I think, Google. This is of some significance in that I'd kind of hoped to use the SDC as storage accessible to both Linux and Android sides, so it would pretty much need to be in a format both could read.
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speculatrix
post Jan 10 2018, 11:46 AM
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QUOTE(depscribe @ Jan 10 2018, 06:18 PM) *
Has Linux found away to read exFAT natively? When I occasionally have had the need to read an exFAT card I've had to employ something called exfat-fuse, which was cooked up at, I think, Google. This is of some significance in that I'd kind of hoped to use the SDC as storage accessible to both Linux and Android sides, so it would pretty much need to be in a format both could read.


I'm pretty certain exFAT is only usable as a FUSE file system, probably due to patent encumbrances.

I have a DSLR with a 64GB card and it has to be formatted exFAT for the camera to recognise it (can't even partition it down to 32GB and use FAT32), and I had to install FUSE utils and other things for it to be mountable on Linux.
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depscribe
post Jan 10 2018, 12:32 PM
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QUOTE(speculatrix @ Jan 10 2018, 11:46 AM) *
I'm pretty certain exFAT is only usable as a FUSE file system, probably due to patent encumbrances.

I have a DSLR with a 64GB card and it has to be formatted exFAT for the camera to recognise it (can't even partition it down to 32GB and use FAT32), and I had to install FUSE utils and other things for it to be mountable on Linux.


Me, too (re. DSLR with big card and what needs to be done to mount it). My concern now is what file system might be used for big MicroSD cards that would be happily recognized by both Linux and Android. Is there one?
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Grench
post Jan 11 2018, 02:15 PM
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QUOTE(depscribe @ Jan 10 2018, 02:32 PM) *
QUOTE(speculatrix @ Jan 10 2018, 11:46 AM) *
I'm pretty certain exFAT is only usable as a FUSE file system, probably due to patent encumbrances.

I have a DSLR with a 64GB card and it has to be formatted exFAT for the camera to recognise it (can't even partition it down to 32GB and use FAT32), and I had to install FUSE utils and other things for it to be mountable on Linux.


Me, too (re. DSLR with big card and what needs to be done to mount it). My concern now is what file system might be used for big MicroSD cards that would be happily recognized by both Linux and Android. Is there one?


We discussed this over on the Pyra boards and someone came up with a solid but in some ways ironic and sad solution.

Format the partition as NTFS and both Android and Linux as well as Windows should be able to read it native. Cameras are out of luck though. exFAT makes the cameras, Windows and Android happy but not Linux... BUT... On the Pandora (Pyra forums) a community member was able to incorporate the exFAT system in.

In theory, Android devices are native EXT4. I haven't tried that.

We're in for all sorts of entertainment with cards, card speeds, partitioning, formats, etc... It's going to be fun.
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speculatrix
post Jan 11 2018, 03:34 PM
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the partition on my memory card containing a debian installation is formatted as ext4, I've not had any problems mounting it on various phones I've had since I set that up.

it's a shame that there's no F2FS driver for Windows: https://f2fs.wiki.kernel.org/development
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depscribe
post Jan 11 2018, 05:14 PM
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QUOTE(speculatrix @ Jan 11 2018, 03:34 PM) *
the partition on my memory card containing a debian installation is formatted as ext4, I've not had any problems mounting it on various phones I've had since I set that up.

it's a shame that there's no F2FS driver for Windows: https://f2fs.wiki.kernel.org/development


If Android can read and write ext4, then the world is a more beatuiful place than I awakened this morning thinking it was.
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Grench
post Jan 15 2018, 03:47 PM
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QUOTE(depscribe @ Jan 11 2018, 07:14 PM) *
QUOTE(speculatrix @ Jan 11 2018, 03:34 PM) *
the partition on my memory card containing a debian installation is formatted as ext4, I've not had any problems mounting it on various phones I've had since I set that up.

it's a shame that there's no F2FS driver for Windows: https://f2fs.wiki.kernel.org/development


If Android can read and write ext4, then the world is a more beatuiful place than I awakened this morning thinking it was.


I tried an EXT4 formatted microSDXC last night in a Galaxy Note 3, Android 5.1. It failed to recognize it.
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