Open Mac OS 9.1 and 9.2 image files with SheepShaver

A friend from Greece has extracted the contents of Mac OS 9.x CD-ROMs and made them available to me: - Mac OS 9.1 (Greek) as a non-bootable zip file (https://mega.nz/file/ykliWRZZ#blinsA6CxR5o_5vQ199VumkiREGWRWHCLIZ-_J8727Q) - Mac OS 9.2.2 (Greek) as a bootable image file (https://mega.nz/file/XkVwlL4Z#lGCudujsL1kP2zu57QPOpUqatJlmGwwz2ZxTsTKS_Rc) My questions are: 1. How can I make the first file bootable? 2. How can I open the second file in SheepShaver ? SheepShaver complains that the ROM is not compatible (I downloaded it from https://www.redundantrobot.com/sheepshaver).