geffers
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Old SD (or microSD) cards

Thu Mar 26, 2020 3:57 pm

Anyone any suggestions as to what to do with working but unused microSD cards.

I recall when USB memory sticks first came out capacity was measured in MegaBytes, now we are close to Terrabytes being the norm. I've got a few 8GB class 4 cards that I am reluctant to just throw away, so small in size can they be recycled, or is it worth it?

Geoff

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davidcoton
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Re: Old SD (or microSD) cards

Thu Mar 26, 2020 4:01 pm

I'm sure they can be used for levelling up wonky chairs (maybe not microSD).
Or filling up your drawer where you keep all your obsolete electronics "just in case".
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pica200
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Re: Old SD (or microSD) cards

Thu Mar 26, 2020 4:23 pm

Use them for archiving data like pictures. They should be able to hold the data at least 20 years.

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rpdom
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Re: Old SD (or microSD) cards

Thu Mar 26, 2020 6:03 pm

I use old cards like that to build up systems for testing stuff out on. I can install a fresh Raspbian on them, try stuff out, then re-write them as required when it goes wrong.
Unreadable squiggle

Heater
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Re: Old SD (or microSD) cards

Thu Mar 26, 2020 7:17 pm

I used old SD cards, with whatever puny capacity they had years ago, to hold the CP/M operating system image from My Z80 emulator on the Parallax Propeller MCU.

Which was wasteful enough. I would feel really silly now putting eight 8MB disk images on a 64GB SD card today,
Memory in C++ is a leaky abstraction .

emma1997
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Re: Old SD (or microSD) cards

Thu Mar 26, 2020 7:44 pm

rpdom wrote:
Thu Mar 26, 2020 6:03 pm
I use old cards like that to build up systems for testing stuff out on. I can install a fresh Raspbian on them, try stuff out, then re-write them as required when it goes wrong.
Me too. Only in my case it's the 2G that are 'old'. In fact even most of my 32G cards are partitioned to 4G because I hate spending hours waiting for progress bars. Or worse, no progress bar and wondering if the system hung.

Also noteworthy that reliable 2G and 4G cards cost more than bigger ones. There are situations where the bigger ones just don't work so probably not a good idea to toss them.

jbudd
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Re: Old SD (or microSD) cards

Thu Mar 26, 2020 11:07 pm

In my experience, micro sd cards that aren't in use in a camera, phone or Raspberry Pi simply evaporate.
Maybe they elope to Africa with ballpoint pens and teaspoons.
My stash of full sized SD cards only reappeared in the desk drawer when I disposed of the last Pi that could use them.

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Botspot
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Re: Old SD (or microSD) cards

Thu Mar 26, 2020 11:13 pm

Old SD cards are perfect for mechanical stress testing:
From this thread:
Heater wrote:
Wed Feb 05, 2020 8:28 pm
W. H. Heydt,
W. H. Heydt wrote:
Wed Feb 05, 2020 6:28 pm

The microSD cards are pretty thin and fragile.
That prompted me to pull an 8GB card out of a Pi and try to break it in half.

Amazing, it's actually pretty easy.

Also amazing that I have never broken one before or anything else on a Pi. Given how I keep them in junk boxes with piles of other stuff and tote them around in my pockets and so on.
Edit: revised due to Heater's statement of confusion
Last edited by Botspot on Thu Mar 26, 2020 11:25 pm, edited 2 times in total.
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Heater
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Re: Old SD (or microSD) cards

Thu Mar 26, 2020 11:17 pm

Botspot wrote:
Thu Mar 26, 2020 11:13 pm
Old SD cards are perfect for mechanical stress testing:
Heater wrote:
Wed Feb 05, 2020 8:28 pm
W. H. Heydt,
W. H. Heydt wrote:
Wed Feb 05, 2020 6:28 pm

The microSD cards a pretty thin and fragile.
That prompted me to pull an 8GB card out of a Pi and try to break it in half.

Amazing, it's actually pretty easy.

Also amazing that I have never broken one before or anything else on a Pi. Given how I keep them in junk boxes with piles of other stuff and tote them around in my pockets and so on.
I think quoting me from some other thread months ago might confuse people. It confused me :)
Memory in C++ is a leaky abstraction .

geffers
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Re: Old SD (or microSD) cards

Fri Mar 27, 2020 9:11 am

jbudd wrote:
Thu Mar 26, 2020 11:07 pm
In my experience, micro sd cards that aren't in use in a camera, phone or Raspberry Pi simply evaporate.
Maybe they elope to Africa with ballpoint pens and teaspoons.
My stash of full sized SD cards only reappeared in the desk drawer when I disposed of the last Pi that could use them.
I've still got 4 Pi devices that use full sized cards, all in regular use, I just use micro cards in a full size adapter.

Geffers

geffers
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Re: Old SD (or microSD) cards

Fri Mar 27, 2020 9:13 am

pica200 wrote:
Thu Mar 26, 2020 4:23 pm
Use them for archiving data like pictures. They should be able to hold the data at least 20 years.
You'd have to be very methodical with records and storage.

Geffers

geffers
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Re: Old SD (or microSD) cards

Fri Mar 27, 2020 9:19 am

rpdom wrote:
Thu Mar 26, 2020 6:03 pm
I use old cards like that to build up systems for testing stuff out on. I can install a fresh Raspbian on them, try stuff out, then re-write them as required when it goes wrong.
That is a decent idea,, I do have one of those plastic holder that store 8 microSD cards, don't write on the labels, just keep a file numbered 1-8 with details of card content on it.

Geffers

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FTrevorGowen
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Re: Old SD (or microSD) cards

Fri Mar 27, 2020 11:34 am

geffers wrote:
Fri Mar 27, 2020 9:19 am
rpdom wrote:
Thu Mar 26, 2020 6:03 pm
I use old cards like that to build up systems for testing stuff out on. I can install a fresh Raspbian on them, try stuff out, then re-write them as required when it goes wrong.
That is a decent idea,, I do have one of those plastic holder that store 8 microSD cards, don't write on the labels, just keep a file numbered 1-8 with details of card content on it.

Geffers
And, maybe, FWIW, also log their, decoded, CID info. : https://www.cpmspectrepi.uk/raspberry_p ... cking.html ?
Trev.
Still running Raspbian Jessie or Stretch on some older Pi's (an A, B1, 2xB2, B+, P2B, 3xP0, P0W, 2xP3A+, P3B+, P3B, B+, and a A+) but Buster on the P4B's & P400. See: https://www.cpmspectrepi.uk/raspberry_pi/raspiidx.htm

Paul Hutch
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Re: Old SD (or microSD) cards

Fri Mar 27, 2020 1:49 pm

geffers wrote:
pica200 wrote:
Thu Mar 26, 2020 4:23 pm
Use them for archiving data like pictures. They should be able to hold the data at least 20 years.
You'd have to be very methodical with records and storage.

Geffers
To make it easier to track and catalog the contents be sure to give each card a unique volume label and then use Virtual Volumes View to catalog all the cards. http://vvvapp.sourceforge.net/

I use this for all my external hard drives, memory cards, thumb drives, and optical media that contain archived data.

mikerr
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Re: Old SD (or microSD) cards

Fri Mar 27, 2020 2:03 pm

Old small SD are useful for old pi models to enable USB / network boot.

Just put the single file bootcode.bin on an otherwise empty SD card, and that enables them to boot from USB or network.
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