Hi Basil,
This is a good summary :-)
Best regards
Nio
Den 2016-06-07 kl. 00:26, skrev Basil Fernie:
Hi Nio,
Yes, thank you for your earlier reply with pix which arrived too late
for me to acknowledge in my latest e-mail to you.
To summarise my current understanding:
There is nothing inherent in the design of SDHC cards and adapters
to make them unfit as boot devices for laptops etc. Certain laptops
(e.g. some Asus eee's) are known to boot direct from the card-reader
slot. Some other machines will boot from a card if it is fitted via
a card-to-USB adapter.
The adapter is needed to provide a target for the boot system to
know it must look amongst listed USB devices (of a "stick" type) for
the boot device. Thus the adapter allows the machine's USB system to
drive the card in all respects as if it were a USB stick.
Therefore there is no need for a machine to have a special SD reader
system if it already has USB, it could have been designed for the
reader slot to appear internally as just another USB device listed
in the boot options menu.
No amount of unetbootln, mkusb or Startup Disk Creator activity on
the SD card itself will enable your laptop to boot from it if the
card reader slot is not accessible via the boot device menu,
possibly via a USB proxy.
It may or may not be possible to coerce your laptop's boot menu to
include a card reader, but at present I do not feel confident about
imposing thus successfully on the firmware.
However with the information on the links you have provided, I may be
able to report a more favourable status quite soon. Here's hoping, and
thanks again!
Best regards
Basil Fernie
On 06/06/2016 07:31 PM, Nio Wiklund wrote:
Hi Basil,
You get the acknowledgement, that I have read you message like this: a
reply :-)
At least older Asus eeePCs boot from the card reader slot. See this link
http://ubuntuforums.org/showthread.php?t=1981199
At that time I recommended the naked dd command. Now that I have made
mkusb, I recommend to use it in order to wrap a safety belt around dd.
I don't know about 'full size' Asus laptops.
There are work-arounds for computers that will not boot directly from
an SD slot, 'chainloading'. See these links
http://www.barryhubbard.com/linux/booting-acer-aspire-one-from-sd-card/
https://help.ubuntu.com/community/Installation/FromUSBStick#Chainloading
I think there are many methods to use chainloading, some easier, some
more complicated. This method for Acer Aspire looks complicated to me,
but gives you an idea of what people do to achieve similar things to
what you want.
-o-
Notice that you sent this mail only to me (at least no other visible
receiver). If you want replies from other people, please send to the
mailing lists. The reason why I sent the mail 'only to you' is that
the mailing lists do not accept big mails, and the attached pictures
make them exceed that limit (if I remember correctly 40 kB).
Best regards
Nio
Den 2016-06-06 kl. 18:47, skrev Basil Fernie:
Hi Nio, Nice collection!
Now I am thinking of your 2nd-pic, bottom-RH corner, pretty-well
universal SD-SDHC adaptor which, when pushed into the slot at the side
of the Samsung, projects all of 3 or 4mm. The one I use more or less
permanently on my Lenovo projects all of 1mm, virtually invisible and
virtually undamageable, not at all intrusive. Might as well be installed
internally - except that I can take it out very easily when I wish, and
I can put in another when I wish. Unlike an internal HDD.
Why would I want to insert that into a rather clumsy USB adapter when
the USB-adapting could be done internally?
I have quite a collection of USB sticks, also HDDs going all the way
back to Seagate 20MB units(!), and a handful of SDHC cards which I have
slowly been realising I have not been using to their full potential. Or
at least to their full /potential/ potential, which is being made
inaccessible by unimaginative system designers who prevent routine
booting from SDHCs.
Rant over, thank you for listening and contributing. Anyone who knows of
laptop brands or models that routinely enable booting from SD/SDHC
cards, please alert me.
Best regards,
Basil Fernie
6/2016 07:34 AM, Nio Wiklund wrote:
Den 2016-06-05 kl. 23:31, skrev Basil Fernie:
I'm not looking for more USB slots, but for fewer sticking-out or
cabley
things.
Hi Basil,
Sticking out, yes, cabley, no :-)
My smallest adapter is very small but not very rugged. The bigger ones
seem more able to take some mechanical abuse.
Best regards
Nio
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