Renaming a directory in MS-DOS is much like renaming a file use the ren or rename command to rename the directory. Because you cannot have a file and directory that have the same name you will not need to worry about mistakenly renaming a file instead of a directory, unless you're using wild characters.
Normal balance is the accounting classification of an account. It is part of double-entry book-keeping technique. An account has either credit (Abbrev. CR) or debit (Abbrev.
Look through the ledger account balances for this halved missing amount and you'll find your culprit. Example: This one warrant an example. The ledger account names are irrelevant, so let's say in a perfectly balanced trial balance you have eight account balances: Debits: 15, 35, 55, 25. Credits: 20, 30, 10, 70.