gsgs
Posts: 134
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card slots

Fri Dec 25, 2015 3:50 pm

I want ~16 slots in my pi for 16 different cards.
They needn't be wired to the board, just to hold them
so I can easily switch and to choose the card where to boot from.
So, there should also be some place to name the cards.

Has it been done ? I can't be the first with that wish ...
May just burn some slots into the case with a suitable soldering stick
and write on it with a fine CD-marker ?!
Or glue etikettes to it.

Why don't they sell it with multiple bootable cards and slots already.
And yes, there should be also at least 3 additional SD-ports
wired to the pi, so we needn't use the USB ports for it.

fruitoftheloom
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Re: card slots

Sat Dec 26, 2015 6:52 am

gsgs wrote: so I can easily switch and to choose the card where to boot from.
The RPi can only boot from the SD Card in the SD Card Slot, you do not seem to have grasped that concept:

http://wiki.beyondlogic.org/index.php?t ... ot_Process
The information is out there....you just have to let it in.

My other Linux machines: ChromeBox
https://www.aliexpress.com/item/32966393971.html
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gregeric
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Re: card slots

Sat Dec 26, 2015 7:56 am

The OP wanted a case with multiple card storage slots, which he can manually swap into the Pi's single boot slot. Seems like a half decent idea to me.

As to the second request, the BCM2835/6 only has one SDIO interface, so you're stuck with using USB for any extra. Need more space -> get a bigger card. Need more booting options -> use NOOBs, or partition your uSD / HD & select boot partition by modifying cmdline.txt every time you want to change.

gsgs
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Re: card slots

Sat Dec 26, 2015 8:25 am

One idea is to run it for several automatical tasks, without TV,keyboard,mouse.
The pi-bootable cards being prepared in my Windows-computer,
or one extra data-card or external HD is placed into USB, where the booting card reads
from, processes the data, and writes it back to USB when done.

And I also have different operating systems for the pi, which I'd like to switch.

And I don't like the current concept, how pi-cards are being sold. They are _not_
bootable, instead they require a keyboard command, what operating system
to install before they become bootable.

I think we should have several different booting cards easily available in/on/next to the pi

-------------------------------
also, I think it must be possible to "boot" from USB : you boot from SD-card and then
transfer to USB where the old operating system is overwriten with the new one from USB
But well, when you need the SD-boot anyway then you might just put the USB-card
into the booting slot


However, I bought that USB-device with a non-micro-SD in it, with multiple raspberry
operating systems, and now I wonder, how to run it

fruitoftheloom
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Re: card slots

Sat Dec 26, 2015 8:39 am

I want ~16 slots in my pi for 16 different cards.
They needn't be wired to the board, just to hold them
so I can easily switch and to choose the card where to boot from.
So, there should also be some place to name the cards.


That statement is totally ambigious.....


And I don't like the current concept, how pi-cards are being sold. They are _not_
bootable, instead they require a keyboard command, what operating system
to install before they become bootable.


That is totally untrue, a Standalone Operating System will boot without interaction, only if using NOOBS installer/chooser or BerryBoot
bootloader/universal operating system installer is interaction needed......


also, I think it must be possible to "boot" from USB : you boot from SD-card and then
transfer to USB where the old operating system is overwriten with the new one from USB
But well, when you need the SD-boot anyway then you might just put the USB-card
into the booting slot


Boot from USB has never been supported during the RPi SBC 4 years life, a Kernel needs to be found in the Boot Partition:

http://wiki.beyondlogic.org/index.php?t ... ot_Process


However, I bought that USB-device with a non-micro-SD in it, with multiple raspberry
operating systems, and now I wonder, how to run it


That request should be aimed at the Vendor who sold you the Device...
The information is out there....you just have to let it in.

My other Linux machines: ChromeBox
https://www.aliexpress.com/item/32966393971.html
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ame
Posts: 3172
Joined: Sat Aug 18, 2012 1:21 am
Location: New Zealand

Re: card slots

Sat Dec 26, 2015 8:49 am

gsgs wrote:And I don't like the current concept, how pi-cards are being sold. They are _not_
bootable, instead they require a keyboard command, what operating system
to install before they become bootable.
Bootable:
http://thepihut.com/products/raspbian-p ... ed-sd-card

fruitoftheloom
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Re: card slots

Sat Dec 26, 2015 9:00 am

gregeric wrote:The OP wanted a case with multiple card storage slots, which he can manually swap into the Pi's single boot slot. Seems like a half decent idea to me.

As to the second request, the BCM2835/6 only has one SDIO interface, so you're stuck with using USB for any extra. Need more space -> get a bigger card. Need more booting options -> use NOOBs, or partition your uSD / HD & select boot partition by modifying cmdline.txt every time you want to change.
Did you read the OP's other post ??

viewtopic.php?f=41&t=129145&p=863398#p863007
The information is out there....you just have to let it in.

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gregeric
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Re: card slots

Sat Dec 26, 2015 9:03 am

Did you not see that I'd posted in there :?:

fruitoftheloom
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Re: card slots

Sat Dec 26, 2015 9:12 am

gregeric wrote:Did you not see that I'd posted in there :?:
You may have posted but unsure whether you had read everything, considering your response...

Anyway carry on helping the OP you obviously comprehend his nuances.....
The information is out there....you just have to let it in.

My other Linux machines: ChromeBox
https://www.aliexpress.com/item/32966393971.html
& Stone Desktop Intel CoreDuo circa 2010

gsgs
Posts: 134
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Re: card slots

Sat Dec 26, 2015 9:28 am

one card that makes the pi (pi-zero ?) into an advanced musicplayer
(navigation,effects,

another card that makes it a chess-player

another card for thermometer,barometer, weather recording

another card for heart-monitor, ECG

another card for timing etc.

another card for email, browsing

another card for copying

...

vendors could just sell these cards to inexperienced users, instead of requiring users to install
operating systems or switch applications from menus that they don't understand.
The cards boot directly into the application menu

used cards can be returned and overwritten with another application

ame
Posts: 3172
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Location: New Zealand

Re: card slots

Sat Dec 26, 2015 9:49 am

gsgs wrote:one card that makes the pi (pi-zero ?) into an advanced musicplayer
(navigation,effects,

another card that makes it a chess-player

another card for thermometer,barometer, weather recording

another card for heart-monitor, ECG

another card for timing etc.

another card for email, browsing

another card for copying

...

vendors could just sell these cards to inexperienced users, instead of requiring users to install
operating systems or switch applications from menus that they don't understand.
The cards boot directly into the application menu

used cards can be returned and overwritten with another application
Your ideas are intriguing to me and I wish to subscribe to your newsletter.

gsgs
Posts: 134
Joined: Sun Dec 13, 2015 6:48 pm
Location: Germany
Contact: Website

Re: card slots

Sat Dec 26, 2015 9:50 am

fruitoftheloom,
-----------------
the space between the cards, I meant you should be able to write on it, to mark the cards.
Sorry for possible ambiguous English.
------------------
I at least had the experience that I bought several "boot" cards from ebay but they didn't boot,
the LED was not blinking for 20sec. (I had no display at that time)
------------------
"boot" from USB, automatically run a program from USB after switching on,
that could presumably done by an easy software trick ?!
-------------------------------
this forum should help solve the common problems, as I understand.
Even if the vendor is responsable.
--------------------------------
ame,
ok, I ordered the "piHut" card, just to see whether it really boots
-----------------------------------

fruit-uk
Posts: 609
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Location: Suffolk, UK

Re: card slots

Sat Dec 26, 2015 10:03 am

I have never had an unbootable SD card - but then I don't buy them from ebay so prehaps that is part of the reason.

I think if I were trying to do something like this I would set up a multi-partitioned HDD and write relevant files to /boot on SD ready for next boot - but that doesn't seem to be quite what you want

ame
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Location: New Zealand

Re: card slots

Sat Dec 26, 2015 10:06 am

gsgs wrote:--------------------------------
ame,
ok, I ordered the "piHut" card, just to see whether it really boots
-----------------------------------
Well, I hope it does, but you could easily make your own bootable card.

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DougieLawson
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Re: card slots

Sat Dec 26, 2015 10:12 am

fruit-uk wrote: I think if I were trying to do something like this I would set up a multi-partitioned HDD and write relevant files to /boot on SD ready for next boot - but that doesn't seem to be quite what you want
That's probably the sensible way to have multiple OSes. It only needs a change of root= in the cmdline.txt on the /boot partition. Every OS would need the same /lib/modules/`uname -r` folder (unless you can work around that) but it will work.

It looks like the support for running from a hard disk is already in Berryboot. The SDCard holds just the stuff to get Berryboot running and Berryboot does the magic with the root filesystems. http://www.berryterminal.com/doku.php/berryboot
Any language using left-hand whitespace for syntax is ridiculous

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Any requirement to use a crystal ball or mind reading will result in me ignoring your question.

gsgs
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Re: card slots

Sat Dec 26, 2015 2:15 pm

one of the main advantages of the pi is its small size.
That's gone with a HD !
And it's suitability for fixed tasks, like measuring, controlling.
No big TV,keyboard,mouse needed.
So you have one card for each of the tasks.
And you need some card-storing and organizing system.
It's canonical. Am I the first to ask for it ?
How did you veterans organize your floppy disks in the old days ?
Then later your CDs ?
Now we have these tiny micro-SDs and 10cm computers
(although it has typically no display,keyboard,mouse,battery included)


why are they black --> can't write on it with a CD-marker



especially now, that we'll get the pi-zero (presumably ?)

fruitoftheloom
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Location: Delightful Dorset

Re: card slots

Sat Dec 26, 2015 2:27 pm

gsgs wrote:one of the main advantages of the pi is its small size.
That's gone with a HD !
And it's suitability for fixed tasks, like measuring, controlling.
No big TV,keyboard,mouse needed.
So you have one card for each of the tasks.
And you need some card-storing and organizing system.
It's canonical. Am I the first to ask for it ?
How did you veterans organize your floppy disks in the old days ?
Then later your CDs ?
Now we have these tiny micro-SDs and 10cm computers
(although it has typically no display,keyboard,mouse,battery included)


why are they black --> can't write on it with a CD-marker



especially now, that we'll get the pi-zero (presumably ?)
http://www.amazon.co.uk/slots-case-pouc ... B009FWYGGS
The information is out there....you just have to let it in.

My other Linux machines: ChromeBox
https://www.aliexpress.com/item/32966393971.html
& Stone Desktop Intel CoreDuo circa 2010

fruit-uk
Posts: 609
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Location: Suffolk, UK

Re: card slots

Sat Dec 26, 2015 2:35 pm

gsgs wrote:one of the main advantages of the pi is its small size.
That's gone with a HD !
Use a USB stick instead then
And it's suitability for fixed tasks, like measuring, controlling.
I use different apps, not different boots
No big TV,keyboard,mouse needed.
Only one of my Pis has those as I use the GUI on that. The rest are headless over ssh.
So you have one card for each of the tasks.
And you need some card-storing and organizing system.
That's what the filesytem is for
It's canonical. Am I the first to ask for it ?
I have no real idea of what you wish to achieve but it seems to me that you are gong the wrong way about it - sorry

gsgs
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Re: card slots

Sat Dec 26, 2015 6:45 pm

I think I found something
it's called "micro SD socket" and sells for 20cent from China
you can probably glue 20 together.
With a needle or such to eject/insert the micro-sds and maybe even put
that into the adapted pi case.
writing specifications on it is difficult, though.

yoosi
Posts: 9
Joined: Tue Jan 05, 2016 9:44 pm

Re: card slots

Tue Jan 05, 2016 11:59 pm

gsgs wrote:I want ~16 slots in my pi for 16 different cards.
They needn't be wired to the board, just to hold them
so I can easily switch and to choose the card where to boot from.
So, there should also be some place to name the cards.
Perhaps try a case like this? http://www.amazon.com/Bandc-Storage-Hol ... B018RUWK98

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karrika
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Location: Finland

Re: card slots

Wed Jan 06, 2016 1:37 pm

That is a nice case. I already have four different SD cards that I swap depending on what hardware I connect to my Pi 2.

- Atari Lynx Programmer with RetroPie
- DiscoHAT for theater light and sound control running an optimized image without a desktop
- DiscoHAT production card with our current show on it
- Raspbian

Buying a card holder is a great idea. The SD cards are so small.

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