Queries and Discussions. 05.Understanding-ARM-Board-Bringup

pravjot

Issues, queries, suggestions or discussion related to

05.Understanding-ARM-Board-Bringup

should be posted here.

sanjay.bhatt

I am getting this below error while build busybox

" CC      networking/tc.o
networking/tc.c: In function ‘cbq_print_opt’:
networking/tc.c:236:27: error: ‘TCA_CBQ_MAX’ undeclared (first use in this function); did you mean ‘TCA_CBS_MAX’?
236 |         struct rtattr *tb[TCA_CBQ_MAX+1];
      |                           ^~~~~~~~~~~
      |                           TCA_CBS_MAX
networking/tc.c:236:27: note: each undeclared identifier is reported only once for each function it appears in
networking/tc.c:249:16: error: ‘TCA_CBQ_RATE’ undeclared (first use in this function); did you mean ‘TCA_TBF_RATE64’?
249 |         if (tb[TCA_CBQ_RATE]) {
      |                ^~~~~~~~~~~~
      |                TCA_TBF_RATE64
networking/tc.c:255:16: error: ‘TCA_CBQ_LSSOPT’ undeclared (first use in this function)
255 |         if (tb[TCA_CBQ_LSSOPT]) {
      |                ^~~~~~~~~~~~~~
networking/tc.c:256:61: error: invalid application of ‘sizeof’ to incomplete type ‘struct tc_cbq_lssopt’
256 |                 if (RTA_PAYLOAD(tb[TCA_CBQ_LSSOPT]) < sizeof(*lss))
      |                                                             ^
networking/tc.c:261:16: error: ‘TCA_CBQ_WRROPT’ undeclared (first use in this function)
261 |         if (tb[TCA_CBQ_WRROPT]) {
      |                ^~~~~~~~~~~~~~
networking/tc.c:262:61: error: invalid application of ‘sizeof’ to incomplete type ‘struct tc_cbq_wrropt’
262 |                 if (RTA_PAYLOAD(tb[TCA_CBQ_WRROPT]) < sizeof(*wrr))
      |                                                             ^
networking/tc.c:267:16: error: ‘TCA_CBQ_FOPT’ undeclared (first use in this function)
267 |         if (tb[TCA_CBQ_FOPT]) {
      |                ^~~~~~~~~~~~
networking/tc.c:268:59: error: invalid application of ‘sizeof’ to incomplete type ‘struct tc_cbq_fopt’
268 |                 if (RTA_PAYLOAD(tb[TCA_CBQ_FOPT]) < sizeof(*fopt))
      |                                                           ^
networking/tc.c:273:16: error: ‘TCA_CBQ_OVL_STRATEGY’ undeclared (first use in this function)
273 |         if (tb[TCA_CBQ_OVL_STRATEGY]) {
      |                ^~~~~~~~~~~~~~~~~~~~
networking/tc.c:274:67: error: invalid application of ‘sizeof’ to incomplete type ‘struct tc_cbq_ovl’
274 |                 if (RTA_PAYLOAD(tb[TCA_CBQ_OVL_STRATEGY]) < sizeof(*ovl))
      |                                                                   ^
networking/tc.c:277:50: error: invalid application of ‘sizeof’ to incomplete type ‘struct tc_cbq_ovl’
277 |                                 (unsigned) sizeof(*ovl));
      |                                                  ^
"

i have solve this error by changing the .config file

"CONFIG_TC=y" to "# CONFIG_TC is not set "

and also in menu config GUI

go to networking Utilities

remove tc package

raj.kiran

Recovering GRUB and Repairing Your OS Using a Live USB Session

Hello everyone,

I recently faced an issue where I installed the latest kernel and needed to remove the newly installed kernel files from the boot directory. Unfortunately, I accidentally deleted the entire grub directory in the process. As a result, I couldn't boot my OS since GRUB was missing. Although reinstalling the OS is an option, I didn't want to lose my data. If you ever find yourself in a similar situation or need to repair your OS while preserving your data, here is a step-by-step guide to recover GRUB using a live USB session.

Steps to Recover GRUB Using a Live USB Session

Create a Live USB:

Download the ISO file of your Linux distribution.

Use a tool like Etcher (Windows) or dd (Linux) to flash above ISO file and create a bootable USB drive.

Boot from the Live USB:

Insert the Live USB into your computer and reboot.
Enter the BIOS/UEFI settings and change the boot order to boot from the USB drive.
Boot into the live session.

Open a Terminal:

Once you're in the live session, open a terminal.

Identify Your Root Partition:

Run the following command to list your disk partitions:
```
#sudo fdisk -l
```

Identify the root partition where your OS is installed (e.g., /dev/sda1)Mount the Root Partition:

Mount the root partition to /mnt:

#sudo mount /dev/sda1 /mnt
Mount Necessary Filesystems:

#sudo mount --bind /dev /mnt/dev

#sudo mount --bind /proc /mnt/proc

#sudo mount --bind /sys /mnt/sys

Change root into your installed system:

#sudo chroot /mnt

Reinstall GRUB/ Do necessary repairs:

#grub-install /dev/sda (replace /dev/sda with your disk if different)

Generate the GRUB configuration file:

#update-grub

<br>

Exit Chroot and Unmount Filesystems:

#exit

#sudo umount /mnt/dev

#sudo umount /mnt/proc

#sudo umount /mnt/sys

#sudo umount /mnt

Remove the Live USB and reboot your system:

#sudo reboot

<br>

System should now boot correctly with GRUB reinstalled. This method helps in repairing the OS without losing your data.

Queries and Discussions. 05.Understanding-ARM-Board-Bringup

Steps to Recover GRUB Using a Live USB Session

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