Paragon 14 Free - No Boot Device Found After Image Restore

The whole thing is a funny "nomer." The logical term, DisableDeleteNotify, is actually "Disable the Delete Notification" function used with supported storage elements. This is actually the TRIM function used with SSDs to notify them that a certain logical storage block is no longer needed. This function was never needed for HDDs as their storage blocks were just rewritten when they were reused. SSDs can't do that without a serious performance penalty... their best approach is to rewrite a whole block of storage when necessary. This is most efficiently done by a SSD by writing "blocks" to empty storage cells... basically cells that have been erased (another internal function of SSDs that doesn't exist in HDDs).

So... if the OS lets them know when certain blocks of DATA are no longer in use, the SSD can erase that storage cell and make it available for new storage. The TRIM, or "Delete Notify" function does this for the SSD. If you disable this function, the SSD will never know when the DATA in its storage cells is really no longer needed, and will carry this DATA around ad infinitum. Eventually the SSD becomes filled up (all cells partially or fully utilized) with unneeded DATA. When this happens, the only function left to use to store sectors is the Read-Modify-Write function available to storage cells that are partially full. This is a very inefficient, slow operation for SSD storage cells/blocks... the most efficient operation is the ERASE/WRITE function which can only work well if storage cells are freed up as DATA become unused.

That's why when the "Disable the Delete Notification" is OFF (DisableDeleteNotify = 0), the "Delete Notification," aka TRIM, is not disabled and constantly converses with the SSD to allow it to properly manage itself...