MBP5,2 updated to 26.0b7 from b6 on external SSD, from USB installer. Again the modified* OCLP 3.0.0n used for limited patching. No surprises. Running fast enough to write this (with Firefox).
(*note modifications are temporary just to allow early Tahoe experimentation on my MBP5,2 and MBP11,1)
PS: this Tahoe SSD is now on the internal SATA, works well enough to "baptise" it this way.
For b8 I'll wait for the InstallAssistant.pkg, not sure if OTA would work. Need to boot the patched Tahoe with the bootloader containing the legacy USB map as foreseen in OCLP 300n (because of the USB1.1 patches, which make the internal keyboard/trackpad work) while without USB1.1 patches, the legacy USB map must not be present. OTA would transition from patched to unpatched while installing. With USB installer it's unpatched right away so clear which bootloader to use.
MBP5,2: now updated on external SSD which has all user data, from 15.7rc4 to 26.0b8. Using modified OCLP 3.0.0n for limited root patching.
So far always did installs of Tahoe without user data, this time with them (CCC clone from my production MBP11,1).
Root patching required another small modification to 3.0.0n which wasn't necessary before: disable the non-metal common patches and keep only the specific nvidia tesla patches (in sys_patch/patchsets/hardware/graphics/nvidia_tesla.py, see attached 1st text file). Otherwise three frameworks missing from universal binaries (CoreDisplay, IOSurface, SkyLight), and taking them from Sequoia resulted in a non-bootable system. When patching the system without my user data, anyway only the specific patches were used (
didn't find out why yet **).
2nd text file is the log from the successful patch.
System is usable, with sufficient graphics speed from the specific tesla patches but without the common ones, has USB1.1 i.e. internal keyboard and trackpad, no wifi but ethernet, no internal audio. Presence of all user data allows more relevant testing now. Writing this with Firefox, Safari 26.0 reports repeated problems when loading macrumors or github pages.
Tahoe for this non-metal system seems not too far away. Thanks developers!
** reason was that I had a file .dortania_developer in my home directory, history taken over with the user data
Edit (last 1 Aug): a few tests made. System itself is stable.
+ Photos seems to work, apart from fullscreen mode
+ Keynote, Pages, Numbers seem to work
+ SSH from iPhone works and useful in troubleshooting
+ ClamXAV antivirus
+ brightness adjustment of screen and keyboard backlight
+ sleep/wakeup
- Mail client has difficulty connecting to mail servers
- closing Finder windows often cause windows server crash
- some system settings options don't work, e.g. connecting to apple account
- Safari won't load pages from many sites but Firefox works without problems
- wifi doesn't work but ethernet cable does
- local audio not working but can use TV set for output
- App Store crashes
The first three minuses are of course disturbing... but I've still done some real work with the system.
Many of the minuses are likely caused by the incomplete/wrong graphics patching.
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