LinearSolve::rmeth
"SomeMethod" is not a valid value for the Method option in LinearSolve:
LinearSolve[{{1, 2}, {3, 4}}, {1, 2}, Method -> "SomeMethod"]This shows a valid value for the Method option in LinearSolve:
LinearSolve[{{1, 2}, {3, 4}}, {1, 2}, Method -> "OneStepRowReduction"]