Hi
@Hondy, welcome at MacRumors!
In addition to the informations, the other repliers already supplied:
- Your 13" MBP is an intel c2duo: no Metal-Graphic support with OCLP/macOS (no Maps.App, no AppleTV.App etc.)
- Best to go with
@dosdude1 's patchers as the Basic-OS (Sierra, HighSierra, Mojave, Catalina)
- Think about a DualBoot-System with Basic-dd1/Mojave and Alternative-OCLP/Monterey or Ventura.
(if You run a DualBoot-system, think about putting all your personal files and media onto a separate partition/volume except of the (i)Cloud-synched stuff in order to keep both macOS-System-Volumes as small as possible.
- dd1/Mojave is the last macOS to run 32-bit-Apps (iPhoto, Aperture, MS_Office'08 etc) and sports full dark-theme. Starting with Catalina only 64bit-Apps running (no iPhoto, Aperture, MS_Offoce'08 and other valuable software).
- With outdated dd1/Mojave there's still Firefox-ESR, AppleMail, iTunes, etc. working to be connected. With outdated dd1/Mojave some services (WhatsApp, Dropbox etc.) can (only) be connected via Firefox-ESR.
- Starting with Catalina there's Indexing of Fotos in addition to Spotlight-Indexing, that will take permanently a big chunk of CPU-usage and is a constant nuisance. You'll have to stop that process manually via Terminal (Catalina) or via OCLP (where stopping mediaanalysis is the preset).
My personal preferences:
1. Get a new 500GB SSD (or bigger!) and an external USB2/3-case.
2. Prepare the USB-connected 500GB SSD with DiskUtility.App:
2.1 Erase the SSD (GUID/APFS)
2.2 Partition the SSD: First Partition (APFS) / Second Partition 12GB (HFS+/journales) at the very end of the SSD
2.3 Install the Mojave-macOS-Installer via the dd1-MojavePather.App onto that tiny 12GB partition.
3. Swap the internal SSD with the now prepared external USB-connected SSD (so the internal SSD will stay save and sound while You can proceed with further installation of dd1/Mojave)
4. Boot the MBP from the tiny 12GB-Partition, which holds the MojaveInstaller and the dd1-pather-equippment.
Booting/installing/pathing from that 12GB partition will spare You from using the slow USB2-Connection/USB2-Stick. And You'll always have a RecoveryPartition on-board.
5. During the Mojave installation-procedure first start the DiskUtility and make the following prparations:
5.1 add a Volume "Mojave" to the first partion
5.2 add a Volume "MyData" to the first partion
5.3 add a Volume "Monterey" to the first partition (this is optional for a future OCLP/Monterey-installation)
Within DriveUtility change the DisplayOptions to "Show all devices" and You'll see the SSD arranged like this:
SSD
1.Level: Partition1 (=APFS-Container)
2nd Level:
- Mojave (Volume, APFS)
- MyData (Volume, APFS)
- Monterey (Volume, APFS) -optional-
1.Level: Partition2 (12GB, HFS+/Journaled): Mojave-macOS-Installer and Patcher
6. Install Mojave onto the "Mojave" Volume. When installation is complete, reboot a second time into the 12GB-Partion with the MojaveInstaller/Pather and run the "PostInstall" procedure.
7. Reboot into the Mojave-Volume and keep the 12GB-Partition as a Recovery.
8. Install a 16GBUSB2 stick
OCLP-Procedures (You'll need a 32GB-USB2/3-Stick)
1. Download, install and lauch the latest OpenCore-Patcher.App.
2. Within the OC-Patcher-App choose "Build and Install OpenCore". Then "Install to disk" and choose the SSD as the target.
3. Choose "Create macOS-Installer", then "Download macOS Installer" and choose Monterey or Ventura. The macOS-Installer.App will be downloaded to the Applications-Folder.
4. After download is complete create the USB-installer-stick: "Create macOS-Installer" and "Use existin macOS Installer"
5. Most important OCLP-routines that you must not miss:
5.1 "Build and Install OpenCore". Then "Install to disk" and choose the USB-Stick as the target.
5.2 "Install Root-Patches" onto the stick, when OCLP asks for it. That will add hardware specific drivers to the USB-Stick, that are mandatory to successfully install and launch OCLP/macOS.
MonteryInstaller comes with USB1-drivers, Ventura does not. So You might need a USB2-Hub plus USB-Mouse/Keyboard to run the intallation routine of Ventura!
6. After successful installation of Monterey or Ventura run OpenCore-Pather.App again and run "Post-Install Root Patch"
For both dd1/Mojave and OCLP/macOS it's helpful to reduce additional workload to the system (CPU/GPU)
- switch of all animations or transparency effects using "Onyx.App" or SystemSettings,
Hope this might help a bit.
I've successfully done this on a bunch of c2duo machines