At this step:
mount -w -t ext4 /dev/block/mmcblk0p3
at the end of the sentence put an space slash and efs, you have to see something like this:
mount -w -t ext4 /dev/block/mmcblk0p3 / efs --> (then push enter key, then make the last step "reboot" to reboot your phone).
Then your phone have to start normaly but in recovery mode [showing you a yellow information of the system phone]. Look at this thread http://forum.xda-developers.com/show....php?t=2389426
I have a T210 and I have done everything. I did the restore from 4.4.2 from SamMobile, I flashed it, then installed CMW, then follow the steps and it said it "can't find /dev/block/mmcblk0p3...". I've tried changing the -w and -t as somebody else suggested and nothing, then I tried your solution and it doesn't show any error (only "There are some filesystem-specific -o flags", is that it?) but it doesn't work either.... any ideas will be appreciated.
I'm still stuck on the Samsung logo.
Thank you so much.
PS Sorry for grammar and stuff, English is not my first language.