Micro SD card

General support for the Pi-Star System
kt4naz
Posts: 13
Joined: Sun Jun 09, 2019 1:59 pm

Micro SD card

Post by kt4naz »

I'm having issues with getting micro sd cards to work. I have tried SanDisk and have two working out of five. Four from from China/Japan "NO NAME cards" none work.
I have flashed 20-30 times with no luck. Cards show they have the program; and I have tried adding the WPA supplicant.

Thanks for any help,
tnaz
AF4FA
Posts: 47
Joined: Wed Jan 23, 2019 6:20 pm

Re: Micro SD card

Post by AF4FA »

What programs are you using to format the cards and to burn the image to the cards?
kt4naz
Posts: 13
Joined: Sun Jun 09, 2019 1:59 pm

Re: Micro SD card

Post by kt4naz »

SD Card Formatter, BalenaEcther and tried Rufus 3.6 for the first time today. SD Card and BalenaEtcher 50 to 100 times. I have reformatted burnt so many times I really have no clue??? I have tried 3.4.17 and 4.1.0 with and with out WPS.
User avatar
w7efs
Posts: 335
Joined: Sun Apr 22, 2018 4:26 pm

Re: Micro SD card

Post by w7efs »

Exactly what image file are you burning to the card? Pi-Star_RPi_V4.1.0-RC2_08-Jul-2019.img ? The downloaded images need to be unzipped before burning the *.img file.
kt4naz
Posts: 13
Joined: Sun Jun 09, 2019 1:59 pm

Re: Micro SD card

Post by kt4naz »

KE7FNS wrote: Sat Aug 10, 2019 9:45 pm Actually BelenaEtcher will read a zip file and unpack the .img inside it for you automatically.

It is more than likely you have some counterfeit SD cards. One of the tricks the scammers do is they take much smaller capacity cards and rewrite the capacity field into them, and then resilkscreen them, so in windoze it reports that they are the correct size but when you actually try and write that amount to them to fill them up, they fail miserably.

This explains it all very well.
[youtube]https://www.youtube.com/watch?v=cBhNLSk0w6w[/youtube]
from a seller

Thanks for the video, it explains a lot; not to say that Wallyworld has them on there shelves. That is where the last two came from.
I take a chance on the four from over seas and bought two off of ebayyys from Miami which has replied there card are genuine????

thanks,
tnaz
G4AON
Posts: 84
Joined: Tue Apr 24, 2018 5:34 pm

Re: Micro SD card

Post by G4AON »

It has been reported there are a lot of dodgy USB memory sticks around, the same issues may apply to claimed “genuine” SD cards. I have had no problems with SanDisk Ultra Class 10 cards from Amazon (Amazon stock, not from their 3rd party sellers).

I use the Win32 Disk Image program, originally recommended on the Pi-Star image page. I also use the SD Card Formatter from the SD Card Association.

https://www.sdcard.org/

https://sourceforge.net/projects/win32diskimager/

73 Dave
ID51E plus 2
ID5100E
IC9700
AnyTone AT-D878UV
Chinese MMDVM with OLED on a Pi 3B
DVAP on a Pi 3B
AF6VN
Posts: 821
Joined: Fri Jul 20, 2018 1:15 am

Re: Micro SD card

Post by AF6VN »

KE7FNS wrote: Sat Aug 10, 2019 10:25 pm You could try this: Borrowed from one of my earlier posts
download
https://www.sdcard.org/downloads/formatter/

select options and set format type to either FULL (Erase), or FULL (Overwrite), that will process every sector of the disk, instead of just quickly writing the partition table.

It will take a large amount of time depending on the size of the card you have, but it should report if there were any errors while formating, if it does then you will know that the card you have is damaged.
{Note: switched from /code/ tags to /quote/ tags to allow formatting to window width}

WRT the SD card formatter -- if it offers the option, I'd recommend also [X] the CHS option (IE: tell it to adjust the cylinder/head/sector configuration the card reports to the OS, for those that are not using simple LBA mode https://en.wikipedia.org/wiki/Logical_block_addressing )

--
AF6VN
Dennis L Bieber
User avatar
w7efs
Posts: 335
Joined: Sun Apr 22, 2018 4:26 pm

Re: Micro SD card

Post by w7efs »

Formatting an SD card is completely wasted time and effort. The image that gets burned to the card contains the two filesystems /boot (filesystem type fat32) and / (fs type ext4) along with partition information. The / ext4 filesystem partition is expanded to occupy all remaining card space upon invocation of /usr/local/sbin/pistar-expand that gets invoked from /etc/rc.local when the image gets booted the first time.
User avatar
w7efs
Posts: 335
Joined: Sun Apr 22, 2018 4:26 pm

Re: Micro SD card

Post by w7efs »

You'd do well to read "man resizefs" after examining "less $(which pistar-expand)".
User avatar
w7efs
Posts: 335
Joined: Sun Apr 22, 2018 4:26 pm

Re: Micro SD card

Post by w7efs »

"man resize2fs" would've been apparent after "less $(which pistar-expand)" ... thanks for the correction.
Post Reply