partition-sdcard.sh gives tons of errors

[marcosartore]

Hi, I am following your tutorial step by step but am unable to fix these errors thrown when I execute your partition-sdcard.sh script:

Device /dev/sdb found, removing partitions sudo sgdisk -o /dev/sdb

---

Found invalid GPT and valid MBR; converting MBR to GPT format in memory.

---

Non-GPT disk; not saving changes. Use -g to override.

Partitioning... sudo sgdisk --resize-table=128 -a 1 -n 1:34:545 -c 1:fsbl1 -n 2:546:1057 -c 2:fsbl2 -n 3:1058:5153 -c 3:ssbl -N 4 -c 4:prog -p /dev/sdb

---

Found invalid GPT and valid MBR; converting MBR to GPT format in memory.

---

Setting name! partNum is 0 Setting name! partNum is 1 Setting name! partNum is 2 Setting name! partNum is 3 Disk /dev/sdb: 60526592 sectors, 28.9 GiB Model: SD/MMC
Sector size (logical/physical): 512/512 bytes Disk identifier (GUID): 215D93C7-D96B-49E6-B733-814245383042 Partition table holds up to 128 entries Main partition table begins at sector 2 and ends at sector 33 First usable sector is 34, last usable sector is 60526558 Partitions will be aligned on 1-sector boundaries Total free space is 0 sectors (0 bytes)

Number Start (sector) End (sector) Size Code Name 1 34 545 256.0 KiB 8300 fsbl1 2 546 1057 256.0 KiB 8300 fsbl2 3 1058 5153 2.0 MiB 8300 ssbl 4 5154 60526558 28.9 GiB 8300 prog Non-GPT disk; not saving changes. Use -g to override.

Formatting partition 4 as FAT32

mkfs.fat -F 32 /dev/sdb4 mkfs.fat 4.2 (2021-01-31) mkfs.fat: unable to open /dev/sdb4: No such file or directory umount: /dev/sdb: not mounted. Done!

Thanks for helping, Marco

[danngreen]

Hmm, it sounds like the disk is MBR, not GPT so needs to be converted. Try this:

sudo sgdisk -g /dev/sdb

If that fails, man sgdisk suggests that the disk may be damaged. So try this:

sudo sgdisk -Z /dev/sdb

This will "zap" all partition data

[marcosartore]

Thank you very much, the first command fixed the issue and I was able to get the serial messages with the expected final error. Now I'm moving to install the arm-none-eabi-gcc toolchain ( downloaded the tar file, hopefully the good one among those tens of choices, unable to find installation instructions, a really slow starting for me....) Marco

[marcosartore]

If useful for anybody else, I've found this link where it is explained how to install the arm-none-eabi-gcc toolchain

[danngreen]

Thanks! I created a Setup help guide and included the link you gave. I also realized the format script is not needed, as the partition script can do the same, so I fixed that too.

[marcosartore]

Thanks Dan, I want add a note which caused many troubles to me, despite it is TOTALLY independent from your repository and explanations. It is about the installation of the arm-none-eabi-gcc toolchain, which is needed to compile the examples. I followed the indications found at the following link: https://lindevs.com/install-arm-gnu-toolchain-on-ubuntu

I want to underline that it is probably due to my fault, as I installed everything with my login ('marco') and not as root. But many people can do like me and the following may help. After installing the toolchain, I was however not able to "make" the examples as user 'marco', unless I issued: source /etc/profile After compilation I exited from the terminal window and all went OK.

I then switched off the computer and at the next restart the login 'marco' was blocked with an error regarding the entry 'arm-none-eabi-gcc' in /etc/profile. I had to build a boot ubuntu image onto an USB pendisk, boot from there, browse my Hard Disk, locate and remove the entry. Really ugly. Still not tried to compile again, but now at leat my PC is recovered :-)

Marco