reboot into the upgraded Sierra/HighSierra/Mojave-Partition. after installation reboot into the patcher(12GB)-partition and complete patching the upgraded macOS-partition. Keep HFS+ as the file-system for the patched macOS-partition (this should be the standard procedure w/o anything necessary to be done), so you can still access the drive/partition with the upgraded macOS whenever you've booted into Leopard/SnowLeopard. (If you want to have the option to reduce the SSD to only one partition, it's important, that Part1 is the partition, that will remain after consecutively deleting Part3 and Part2.) (If anything fails, you have your original disk still in a save place and may clone-copy it back to your internal SSD).įor the dual-boot-option the SSD starts with Part1:Leopard / Part2: Leopard / Part3(12GB): Patcher. boot from the last Sierra/HighSierra/Mojave-patcher partition and install patched macOS onto the the Leopard-partition to make the upgrade to patched Sierra/HighSierra/Mojave. put the SSD into your MBP4,1 (the original drive will stay untouched as a backup-drive and goes into the USB-case for further clone-backups of your Leopard/music-production-partition)

(For the dual-boot-option make a clone-copiy of your system onto each partition: one for Leopard, the other for the macOS-upgrade) clone-copy your internal drive to the external USB-SSD-drive with CarbonCop圜loner. get Sierra/HighSierra/Mojave-Patcher and install the patched macOS version onto the last (12GB) partition of the SSD (for first installation and for further recovery) (if you're gonna keep Leopard/Rosetta, then devide the first portion into two partitions: one for L/SL, the other for the macOS upgrade) connect your SSD within the USB-case and create two partitions on that SSD with DiskUtility: the last partition gets 12GB, the 1st one all the rest. get a >= 250GB SSD for 30 bucks and an external USB-housing for about 10bucks

(I personally think, the dual-boot option is the better one, because it leaves your current well-functioning Leopard-configuration untouched.) Click to expand.This is, what I would do (have done) and and S Magnet already suggested: either an upgrade to SL (more browser-options) and/or macOS-Patch (Sierra/HighSierra/Mojave) and optionally a dual-boot drive.

Google chrome for mac os 10.5.8