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Thanks. I have ordered a battery which will be here in about 10 days (from Ireland no less). I will change the CMOS battery also and then upgrade the BIOS. (When upgrading it says you have to AC plugged in and at least 10% battery power..not sure why but Dell you know)... anyway I will suspend...

With slide=0 it does not show the AMF: Only 128/256 slide values are usable. valid slides 128-255 but the +++++++++++++++++++++++++++++++ are still there and it is stops there. Any known way around the BIOS upgrade without the battery?

Ok. Will try the boot argument. My BIOS is like A13. I cannot upgrade to A20 unless I buy a new battery as it will not let you upgrade unless the battery has at least 10%. If I have to get the battery, I will but was hoping I could find out if the OS will load before I start with $80-90 of...

I am confounded. I dropped back to Catalina. Followed all the instructions and with Catalina 15.4 and 15.3 and trying both of the EFI folders that you provided still get the AMF: Only 128/256 slide values are usable. valid slides 128-255 +++++++++++++++++++++++++++++++++++++++++ result...

What version of Catalina do you recommend that I try? I want to use one that you have successfully used with your EFI.

Sorry, I should have said that by this time I so confused by what was going on since I did try to find an EFI folder based on my ramblings through the internet based on the error messages I was getting. Tomorrow I am going to start over from scratch using your guide again to see if I just...

Well I couldn't go to bed without one last try. I finally got past the problem above but got the following panic screen which I think points to some problem with the graphics that the setup_var to change the DVMT was designed to solve. Not sure where to go from here.

I had almost forgotten how much fun it is to sit up til midnight getting error messages on the same machine that everybody else was just sailing through with. I am not discouraged because I know it can be done. You have done it with the same hardware so its something I am doing or not doing...

Thanks. I think I'm going to back up to Mojave and try that. Which EFI should I use? Or which version of Catalina should I use is 15.4 is not working?

Not sure why but am stuck on booting from install USB. I am not sure why. I am using Catalina. Is that a problem? One thing that was not totally sure of. When I prepared the installation USB drive it only had one partition. I added a partition named EFI. Is that an issue?

OK. Thanks. Still waiting on the laptop from eBay. I'm only doing this as a timekiller being stuck at home and sort of miss the Hackintosh worldview. Thanks again

I am in the process of buying a Dell 3450 same as yours and going to re-enter the Hackintosh world. I began with a cast-off desktop several years ago as a lark and after many hours of trial by error and combing the tonymac86 site go myself a fully working mac. I upgraded the Hackintosh for...

As a person who started several years ago with a donated to me machine and several hundred hours of work to get a very stable Hackintosh, I migrated to a 27 in 2017 iMac. I got older and decided I just did not want to face the possibility of one day losing all my work and programs on the Hack...

Hoping you're still there. I am trying to get a Sony VAIO VPCF121GX working. Your post was very helpful. My problem is my inexperience with patching DSDT. I have been reading and watching YouTube as much as I can find but I am confused as to where to find the information that you say to...

Seems like I have to do this every now and then again. Always works. thanks

Just finished the move from Sierra to High Sierra on my test volume and everything went as advertised. Will test functionality tomorrow and test for a while to make sure it is stable before upgrading on my production volume. Thanks to everyone tonymacx86 for the great instructions and all the...

Sorry. Audio: ALC898 Network: BCM57781 thanks

Not sure if this is the answer but this is what shows as audio codecs when I look at the media player technical information. ACM Microsoft GSM 6.10 Audio CODEC0031msgsm32.acm6.3.9600.16384 ACM Microsoft CCITT G.711 A-Law and u-Law CODEC0007msg711.acm6.3.9600.16384 ACM Fraunhofer IIS MPEG...

I am currently using a Windows 8.1 machine that I assembled a couple of years ago but wanted to experiment with a Hackentosh build on a separate boot SSD using a duel boot configuration. I have looked extensively on the boards for any information on my MOBO and processor and have not been able...