To be frank, I'd stick with System 7.1 and not touch System 7.5.3. Your Macintosh Classic II will feel slower with System 7.5.3.
50-pin hard drives (which your Macintosh Classic II uses) were made up to 9.1 GB AFAIK. You can also get a 80-pin SCSI to 50-pin HD adapter for a cheap BIN price. They work well with Macs.
In fact, my Macintosh LC has one of those adapters connected to a Seagate 600 MB 80-pin SCSI hard drive and is running System 7.1 like a charm.
Just a word of warning: you're gonna need third-party formatting software to format a non-Apple ROMed hard drive (otherwise known as a hard drive which does NOT have a Apple logo on the label or any mention of Apple). FWB Hard Disk Toolkit (commercial program) and Micronet Utility 7.2.7 (free program) are nice ones.
Also, for large hard drives, you will have to format them into 2 GB partitions. Once you do so, they run beautifully. My Macintosh LC 475 also has a 9.1 GB 50-pin SCSI hard drive split up into several partitions and also runs System 7.5 like a charm.
Good luck, and enjoy your Macintosh Classic II!
50-pin hard drives (which your Macintosh Classic II uses) were made up to 9.1 GB AFAIK. You can also get a 80-pin SCSI to 50-pin HD adapter for a cheap BIN price. They work well with Macs.
In fact, my Macintosh LC has one of those adapters connected to a Seagate 600 MB 80-pin SCSI hard drive and is running System 7.1 like a charm.
Just a word of warning: you're gonna need third-party formatting software to format a non-Apple ROMed hard drive (otherwise known as a hard drive which does NOT have a Apple logo on the label or any mention of Apple). FWB Hard Disk Toolkit (commercial program) and Micronet Utility 7.2.7 (free program) are nice ones.
Also, for large hard drives, you will have to format them into 2 GB partitions. Once you do so, they run beautifully. My Macintosh LC 475 also has a 9.1 GB 50-pin SCSI hard drive split up into several partitions and also runs System 7.5 like a charm.
Good luck, and enjoy your Macintosh Classic II!