Mac invalid node structure error is the sign of corrupted Macintosh hard drive. Corruption can occurs in Macintosh HD due to any possible cause such abrupt system shutdown, virus attack, software or hardware malfunction etc. Although disk utility quit significant for repairing minor corruption on Mac system but when its come rectify any severe problems it is simply good for nothing. Thus it would not be a surprise at all if disk utility fails to resolve Mac invalid node structure error. However there are few other manual methods are also available to troubleshoot this very issue on Mac machine but as the most of the manual tricks goes through comprehensively complicated process hence you should directly format the entire hard disk rather than having headache with these lengthy procedures. It will wipe the entire data stored on the hard drive but meanwhile it is also a much easy and effective option to fix Mac invalid node structure. Fortunately Mac Data Recovery Software is one utility by which you can conquer any kind of data disaster issue easily within just few seconds. It recovers and restores all kind of deleted, formatted, inaccessible or corrupted data on Mac in a very hassle free manner.