Hi Team, Directly writing image to SD card working fine. sudo dd bs=1M if=udoobuntu-udoo-neo-desktop_20190623-2007.img of=/dev/sdb ==> Working fine. Issue : ==== Creating own SPL and Uboot file and writing to SD card, at the time have issue. How to create own SD card partition and how to write SPL,Uboot to SD card. While write to SD card i am facing below issue. Could you please help on this. Code: linux$ linux$ lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 465.8G 0 disk ├─sda1 8:1 0 95.4G 0 part / ├─sda2 8:2 0 3.8G 0 part [SWAP] ├─sda3 8:3 0 250G 0 part /media/linux/d3013e39-a19c-402e-8736-0ccd0b2bb896 └─sda4 8:4 0 116.6G 0 part /media/linux/3b7afe20-bab2-406a-8c64-811e78f911e2 sdb 8:16 1 7.5G 0 disk ├─sdb1 8:17 1 32M 0 part /media/linux/boot1 └─sdb2 8:18 1 2.6G 0 part /media/linux/udoobuntu sr0 11:0 1 1024M 0 rom linux$ linux$ linux$ linux$ linux$ linux$ ls SPL u-boot.img zImage dts System.map linux$ sudo dd if=SPL of=/dev/sdb1 seek=1 bs=1k [sudo] password for linux: 31+0 records in 31+0 records out 31744 bytes (32 kB, 31 KiB) copied, 0.000417137 s, 76.1 MB/s linux$ linux$ linux$ ls SPL u-boot.img zImage dts System.map linux$ linux$ sudo dd if=u-boot.img of=/dev/sdb1 seek=69 bs=1k 230+1 records in 230+1 records out 236260 bytes (236 kB, 231 KiB) copied, 0.00160651 s, 147 MB/s linux$ sync linux$ linux$ linux$ ls: cannot access ''$'\022''± 2ε╥'$'\a''ε.Ü_'$'\001': Input/output error ls: cannot access ''$'\b''╨"f'$'\v''h'$'\f''i.'$'\001''<'$'\r': Input/output error ls: cannot access ''$'\a''εü?'$'\001''≡.'$'\b''╡ ': Input/output error ls: cannot access 'ಠ≈m '$'\001''≡.╣² ': Input/output error ls: cannot access ''$'\003''╤'$'\001'')'$'\024''┐c#.g#┬': Input/output error ls: cannot access ''$'\032''`,J.ó⌡µ': Input/output error ls: cannot access 'w └≤'$'\a''0c(.'$'\005''╤ ': Input/output error ls: cannot access 'pG.'$'\b''╡ ': Input/output error ls: cannot access '#╨'$'\022''KÜi┬≤.AQ┬': Input/output error ls: cannot access ''$'\t\003\003''çpgpg.'$'\017''jo': Input/output error ls: cannot access ''$'\a''╤'$'\002''≡'$'\003\003\006''!.[': Input/output error ls: cannot access '¿°éç.'$'\001''(s': Input/output error ls: cannot access 'hfú@'$'\005''Ω'$'\003\001''.ß@'$'\035': Input/output error ls: cannot access '─≤'$'\002''D'$'\003''⌠.'$'\b''α─': Input/output error ls: cannot access ''$'\032''o'$'\020''▒B⌠@R.'$'\001''α"': Input/output error ls: cannot access ''$'\002''(ö┐'$'\030''F.)α'$'\003': Input/output error ls: cannot access '└≤ü@'$'\002''('$'\017''╨.'$'\003''('$'\022': Input/output error ls: cannot access '@q!⌠@aög.┘j!': Input/output error ls: cannot access 'nk'$'\033''h▄ic'$'\006''.'$'\005''╘ ': Input/output error ls: cannot access '┬≤Aq┬≤┬T.'$'\002'')'$'\020': Input/output error ls: cannot access '/k.'$'\024''0x': No such file or directory '¥· !'$'\001''¬.'$'\f''┐'$'\023' ''$'\036''H'$'\003''⌐'$'\n''≡Φ■' ''$'\001''.'$'\022''&' '%H'$'\v''≡├ #i.$H' '▐└¡'$'\v' ''$'\b''╡'$'\b''h'$'\v''≡'$'\002'' .l≥p' '╔.'$'\003\003''[' '-I'$'\033''≡Ä√.∞╨0' '╛.'$'\024''≡ƒ' ''$'\003''!'$'\032''≡î■'$'\a''f' '╦■."≡'$'\017' '¬i+`Za.p╜8' '■≈\■'$'\f'' ■≈.'$'\025''ⁿ'$'\004' '#╣'$'\003''i'$'\023''╣.╜Φ°' ''$'\004''≡≡'$'\005\004''≡'$'\017\004''.└≤'$'\a' 'i·'$'\001''≡»·╜Φ.'$'\b''@'$'\f' ''$'\a''╤'$'\002''≡'$'\003\003\006''!.[' jfrnsfjf.Rnô ''$'\b''╜' 'jh╤p.B°'$'\b' ''$'\t''.'$'\002' ''$'\032''`,J.ó⌡µ' ''$'\f''≡┤ⁿ'$'\001''! |.'$'\t''%'$'\021' ''$'\001\002\032''`'$'\024''JO⌠.ös'$'\023' ''$'\r' ''$'\002''J'$'\023''`pG.'$'\004''!á' ''$'\r' ''\''j'$'\022''α ≈â .&i'$'\a' ''$'\r' '/k.'$'\024''0x' ''$'\r' ''$'\027''k.'$'\024''0X' ''$'\r' 'KF'$'\033''hs╡'$'\005''F.'$'\033''l'$'\001' ''$'\r' '┌`kf[n4j.'$'\032''ak' ''$'\r' '≤╨'$'\036''K'$'\032''hB≡.'$'\001\002\032' ''$'\020''.,' ''$'\t''k'$'\034''h. h)' ''$'\022''.'$'\037\020' '┌küc┌k'$'\020'':.┌cp' ''$'\035''°.'$'\001''*'$'\001' 'k■'$'\001''Ü F.!."≡?' ''$'\a''0c('$'\006''╤■≈.ô └' '#╨'$'\022''KÜi┬≤.AQ┬' '■≈╢■└≤'$'\a''0.d('$'\004' 'l╣'$'\004''6'$'\b''.±╨.°τq' ''$'\a''°└≤'$'\a''0f(.'$'\v''╨ ' L⌠çç╣CÇç., ''$'\a''.0f ' ''$'\n'' LF ≈╓ⁿ.─°╨' linux$ linux$ linux$ linux$ After writing SPL and Uboot to SD card, displaying above junk values. Can you please suggest me, how to write SPL and Uboot.img file to SD card. Thanks, Pavan.
Hi Pavan, You wrongly flashed the uboot directly on the filesystem instead of the whole disk: Right commands: Code: sudo dd if=SPL of=/dev/sdb seek=1 bs=1k sudo dd if=u-boot.img of=/dev/sdb seek=69 bs=1k Have a nice day, Ek5
Hi Ek5, Thanks for reply, i have tried same thing as below. But it not showing any thing in SD card. Could you please suggest me, am i doing correct or not ? Code: linux$ ls dts SPL System.map u-boot.img zImage linux$ sudo dd if=SPL of=/dev/sdb seek=1 bs=1k 31+0 records in 31+0 records out 31744 bytes (32 kB, 31 KiB) copied, 0.00386453 s, 8.2 MB/s linux$ linux$ sudo dd if=u-boot.img of=/dev/sdb seek=69 bs=1k 230+1 records in 230+1 records out 236244 bytes (236 kB, 231 KiB) copied, 0.00100831 s, 234 MB/s linux$ linux$ linux$ lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 465.8G 0 disk ├─sda1 8:1 0 95.4G 0 part / ├─sda2 8:2 0 3.8G 0 part [SWAP] ├─sda3 8:3 0 250G 0 part └─sda4 8:4 0 116.6G 0 part sdb 8:16 1 7.5G 0 disk └─sdb1 8:17 1 7.5G 0 part /media/linux/7E09-5BB6 sr0 11:0 1 1024M 0 rom linux$ linux$ linux$ ls linux$ linux$pwd /media/linux/7E09-5BB6 linux$ Hi Team, if any one knows about this issue, could you please help on this. Thanks, Pavan
Hi pavan, This is not an issue, it is normal. After dd-ing the disk, the kernel doesn't reload the partition table automatically. You can do that manually by executing `partprobe` or rebooting. BR, Ek5
Hi Ek5, Thanks for you response. Can you please share the step for 1.How to create exact space of fat32 for SPL and U-boot in SD card. 2.How to write SPL and U-boot file into SD card. 3.How to write zImage and rootfs into SD. Could you please share the details. I didn't able to find the exact details in internet.
Check this page https://www.udoo.org/docs-neo/Advanced_Topics/Compile_UDOObuntu_(complete_bootable_image).html and goto the mkudoobuntu repository for more information. https://github.com/UDOOboard/mkudoobuntu You can modify this script so you can make your own version.
Thanks for response waltervl. I have tried but not luck, if you did anything like that ... can you please share any example scripts. Same thing i will try in my side. Thanks, Pavan.
The mkudoobuntu script is the script. Not much more to share. I personelly have no experience with this so cannot help you. Why do you want to create a new SPL and uboot?
Thanks for reply. Actually i am looking for how to create our own custom udoo neo operation system. This is actual requirement.
