08-09-2020, 05:40 AM
(08-08-2020, 10:35 PM)wdt Wrote: I hope you know to get DECENT SD cards, this is quite important
Better sandisk or any samsung evo are best, larger tend to be faster (>32)
Larger will have more room for wear leveling, not so important for a seldom booted
mbr or gpt mbr is 1 or 34 sectors at start of card
bios equivalent, idbloader, uboot, ATF (arm trusted firmware) are in 1st 16M
idb starts 64 sectors, uboot 8MB, atf 12MB, user partitions at 16MB (32768 sectors)
often uboot and atf are joined together, uboot padded so atf at right location
If this is happening, uboot will be >4MB,, maybe 6.5MB
Specifics: you didn't say if you tried mrfixit's distro, I recommend for a repair/recovery
(on smaller SD card, 16M, so you have enough room to copy another image too)
Do the update, icon on bottom bar to right, then you have his uboot, updated if you wish to use it
(/usr/bin/mrfixit_update.sh,, updates uboot & kernel)
Manjaro has 2 images, one for ONLY use on SD, other to install to emmc FROM SD
(ie , burn to SD, use to install to emmc, NOT a live system, press esc after 30s to show screen)
PCM's uboot can be found from git addressed in forum thread General Discussion ->
U-Boot with direct NVMe boot support for eMMC/SPI Flash
My guess is that you don't realize how important GOOD quality SD's are
This is not a camera, in a cell phone the os is not on card
If you check the cards that boot, I bet they say U1 or U3 as well as class 10
--edit-- BTW, always check for fakes, 1st thing when you get card,
even amazon has sold fakes,, f3 or htestw
The SD Card I am using is a Samsung Evo Plus with 256 GB storage. I bought this from a local Best Buy shop. I thought that this would be a good card to use as I will be living in this card.
I used something similar to mr fixit when UEFI was a pain to use with Ubuntu. My MS laptop was completely skipping the Linux install. I can give it a try if you think it can fix. It is just that I don't see the reason it would skip the sd card. The symptom is below:
When I leave the laptop off for a few hours and decide to power it on, the laptop skips the SD card and boots into Manjaro. When I reboot from Manjaro or shutdown and power it on again shortly, I am able to boot into my Debian system.
I was hearing about fake SD cards and I read a few reviews on Amazon regarding them. There was one review stating he bought a card and it came with 2GB storage space instead of 32GB (or maybe more claimed, I don't recall). It was a Samsung Evo review. I just checked my storage capacity (256GB) with a df -h command and I seem to have 256gb indeed.
I need step by step instructions in case you want me to try mrfixit or similar. I can also buy another sd card and see if it makes a difference.
If you think it is the case, I can order another card, maybe a Sandisk and see if it makes a difference?
