10-30-2022, 10:03 AM
Reset button? -- do you mean power button?
Do try to boot from SD
You (all of us) have NO IDEA what the flash controller is doing with the raw flash cells
Usually it all works OK
But sometimes it helps to blank the flash
Writing /dev/zero is not blanking, but a good 1st step
fstrim IS blanking, if it is working it may take more than a minute to return to the prompt,
this is good. repeat the command, it may not do it completely,,,
repeat until the prompt returns instantly (fstrim -v will give more info)
fstrim will only work on a filesystem, and not FAT,,,, so.....
write /dev/zero to the 1st GB,, fdisk 1 partition to as much of drive as possible
(as early as possible),, then ext2 that partition, then mount and fstrim it
OR if you have a windows machine, the formater from the SD association will also blank
(called something like SD_CardFormatter0500SetupEN.exe, version might be different)
Do try to boot from SD
You (all of us) have NO IDEA what the flash controller is doing with the raw flash cells
Usually it all works OK
But sometimes it helps to blank the flash
Writing /dev/zero is not blanking, but a good 1st step
fstrim IS blanking, if it is working it may take more than a minute to return to the prompt,
this is good. repeat the command, it may not do it completely,,,
repeat until the prompt returns instantly (fstrim -v will give more info)
fstrim will only work on a filesystem, and not FAT,,,, so.....
write /dev/zero to the 1st GB,, fdisk 1 partition to as much of drive as possible
(as early as possible),, then ext2 that partition, then mount and fstrim it
OR if you have a windows machine, the formater from the SD association will also blank
(called something like SD_CardFormatter0500SetupEN.exe, version might be different)
