My clutch will not depress

The clutch is not transferring power to the gearbox, which then is not turning, so that you can select gears without the clutch.Possibilities are
- clutch assembly has failed, possibly by the splined driven plate hub coming adrift
- clutch driven plate has become very worn and has lost contact
- slave cylinder has stuck through corrosion (assuming a hydraulic clutch) and is holding out the clutch independent of the pedal. This can be determined by watching it while someone depresses and raises the pedal.

I think it is unlikely the transmission input shaft has fractured.

check all the linkage to the pedal, if it looks good you will need to pull the trans to check the clutch assembly and through out bearing and the sleeve it rides on

Clutch hydraulics has air in it or the clutch master cylinder is failing.

slave cylinder is my first suspect.

Sound like you're going to need a whole new clutch assembly, but if the fluid level was dry you may have sucked air into the system which means that the clutch will have to be bled at the slave cylinder, just like you would brakes. The squealing sound is coming from the throw out bearing, usually when the do that it means that the bearing is frozen and cannot spin. Either way it looks like you'll be dropping the transmission to work on the clutch.

If you put the trans in neutral and depress the clutch pedal it should still start.
The clutch is hydraulic, so there should be something connecting the pedal to the master cyl and the slave cyl to the clutch disk.

Unfortunately, and I don't like saying this in the least, the problem is going to be the transmission leading to other issues. Your going to have to have the transmission repaired.

the clutch is roasted, and its not the farmers fault.

howdy,you need a clutch..thats for sure,101%

the throw out bearing. Have to drop tranny to fix it.