Last night I installed some patches by using update manager on my solaris 10 on AMD 64. Now I cannot boot. It is keep failing. I am able to go to failsafe and I am able ot update the boot archieve file but I am not sure what to do after this. I think it is not boot problem, I think my kernel is messed up. Is ther any way I can back out of these patches. If so, can I do it by apply date since I do not remember which patch is causing this problem.

Thanks,

You probably should add where the boot fails and what error message you are getting. "Can't boot" isn't very descriptive.

You can use pkgrm to remove patches.
You can see all your patches you applied by running ls -lart /var/sadm/patch. Make sure you remove them in the reverse order.

patchrm and not pkgrm is used to remove a patch, however if the patch was installed using patchadd -d then it's a reinstall, because it won't have backed up the changed files.

removing the patches worked.

Thanks,

Oh yeah, that is what I meant.