downlord Posted May 17, 2024 Share Posted May 17, 2024 On 5/11/2024 at 5:09 AM, tonyyang123 said: https://github.com/tonyyang123/Lenovo-T420-OC If you're interested to install sonoma, maybe give it a try. Forked from tluck and thanks for his contribution Hey, your EFI seems to work better than mine, in Ventura. Testing it now. Thank you. 1 Link to comment https://www.insanelymac.com/forum/topic/285678-lenovo-thinkpad-t420-with-uefi-only/page/212/#findComment-2820205 Share on other sites More sharing options...
tonyyang123 Posted May 21, 2024 Share Posted May 21, 2024 On 5/17/2024 at 7:27 PM, downlord said: Hey, your EFI seems to work better than mine, in Ventura. Testing it now. Thank you. Glad to help you. Link to comment https://www.insanelymac.com/forum/topic/285678-lenovo-thinkpad-t420-with-uefi-only/page/212/#findComment-2820346 Share on other sites More sharing options...
leaddonkey Posted June 14, 2024 Share Posted June 14, 2024 On 5/10/2024 at 11:09 PM, tonyyang123 said: https://github.com/tonyyang123/Lenovo-T420-OC If you're interested to install sonoma, maybe give it a try. Forked from tluck and thanks for his contribution Been using this for a week now on a spare SSD/16GB of RAM and it's fairly good. a little laggy when loading tons of apps, but I watch TV on the T420 hack, some light browsing and book reading. Haven't run any VMs which I used to do on my Sierra/High Sierra hack, but I'll probably work on that in the next few weeks. Thank you @TonyYang123 Link to comment https://www.insanelymac.com/forum/topic/285678-lenovo-thinkpad-t420-with-uefi-only/page/212/#findComment-2821159 Share on other sites More sharing options...
tonyyang123 Posted June 20, 2024 Share Posted June 20, 2024 On 6/14/2024 at 11:07 PM, leaddonkey said: Been using this for a week now on a spare SSD/16GB of RAM and it's fairly good. a little laggy when loading tons of apps, but I watch TV on the T420 hack, some light browsing and book reading. Haven't run any VMs which I used to do on my Sierra/High Sierra hack, but I'll probably work on that in the next few weeks. Thank you @TonyYang123 Glad to help you. Link to comment https://www.insanelymac.com/forum/topic/285678-lenovo-thinkpad-t420-with-uefi-only/page/212/#findComment-2821465 Share on other sites More sharing options...
Tetonne Posted September 28, 2024 Share Posted September 28, 2024 https://github.com/dortania/OpenCore-Legacy-Patcher/releases Link to comment https://www.insanelymac.com/forum/topic/285678-lenovo-thinkpad-t420-with-uefi-only/page/212/#findComment-2825972 Share on other sites More sharing options...
leaddonkey Posted October 22, 2024 Share Posted October 22, 2024 Hey all, hope everyone's good. Anyone test @tonyyang123 OC with Sequoia at all? Was going to read through what changed,/OC walkthrough and do a diff on the config's and try it. Figured i'd ask before I starte digging. Link to comment https://www.insanelymac.com/forum/topic/285678-lenovo-thinkpad-t420-with-uefi-only/page/212/#findComment-2826772 Share on other sites More sharing options...
tonyyang123 Posted October 29, 2024 Share Posted October 29, 2024 On 10/23/2024 at 1:33 AM, leaddonkey said: Hey all, hope everyone's good. Anyone test @tonyyang123 OC with Sequoia at all? Was going to read through what changed,/OC walkthrough and do a diff on the config's and try it. Figured i'd ask before I starte digging. https://github.com/tonyyang123/Lenovo-T420-OC updated oc 1.0.2 and some kext. my t420 is not around, so I can’t test whether it supports sequoia. 1 Link to comment https://www.insanelymac.com/forum/topic/285678-lenovo-thinkpad-t420-with-uefi-only/page/212/#findComment-2827060 Share on other sites More sharing options...
tonyyang123 Posted December 16, 2024 Share Posted December 16, 2024 On 10/29/2024 at 6:07 PM, tonyyang123 said: https://github.com/tonyyang123/Lenovo-T420-OC updated oc 1.0.2 and some kext. my t420 is not around, so I can’t test whether it supports sequoia. tested and support sequoia, but there is a problem with hibernate, sometimes it cannot be woken up 1 Link to comment https://www.insanelymac.com/forum/topic/285678-lenovo-thinkpad-t420-with-uefi-only/page/212/#findComment-2828891 Share on other sites More sharing options...
Kanishka Sen Posted February 21, 2025 Share Posted February 21, 2025 Finally was able to install sequoia on my t420 has i5 2520m, it's sluggish is that to be expected considering it's 14 years old ?:p or did I do something wrong. Great work by @tluck and Tony's efi helped me install the latest version. I plan on getting a 2670q, so when I change the processor do I have to change anything? Aside from Cpu-pm?? 1 Link to comment https://www.insanelymac.com/forum/topic/285678-lenovo-thinkpad-t420-with-uefi-only/page/212/#findComment-2830513 Share on other sites More sharing options...
Tetonne Posted February 23 Share Posted February 23 (edited) Hello i'm on catalina thanks to tluck (clover 5169). i was in the past interested to go to newer OS... but i forget it with a bigSur test without success i went back to Catalina. Situation is différent now because safari is considered as too old.like most apps tonyyang123 pack (OC) seems to well work but not on my config aka Lenovo T420 (42361U2) i5-2540M @2.6GHz 8GB HD 3000 1600*900 Dual boot OS X 10.15.7 & Win 10 Pro - tluck's T420 pack Can you give me the best way to update : my config is ssd working config and in the extra bay (a dual boot HDD with clone of first one ssd and windows boot) on other real mac i use OCLP (ventura or Sonoma) Monterey may be the best choice but i wanna take yours advices How can i adapt tonyyang123 pack to my config (first) cos it doesn't work right now then upgrade OS let me know if i must provide something best regards Edited February 23 by Tetonne Link to comment https://www.insanelymac.com/forum/topic/285678-lenovo-thinkpad-t420-with-uefi-only/page/212/#findComment-2847670 Share on other sites More sharing options...
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