Galaxy Tab P7500 won't boot I was trying to install a custom ROM from recovery menu, but it failed and now my tablet stuck on Samsung Logo and won't boot. In recovery menu I get these errors:

E:failed to mount /system (Invalid argument)
E:install_application_for_customer:Can't mount /system


in 'apply update from/ sdcard' menu, I face an empty list, which means the sdcard is not mounted.

What should I do to survive my tablet?
Now, the only option you've: Flash ROM over USB using Odin (if you have Windows PC). You can find firmware files for your device on Internet (look XDA Forum).