LaFemme69

thank you for the link. do I use kext utility to install the kext? or would you recommend another app that can do it? katie ...EDIT.... I did not install Lion with MyHack so what I ended up doing is using Kext Wizard to install the kext from the link above, repair permission and rebuild cache then reboot...... just WONDERFUL, MARVELOUS!!!! after reboot, VOILA......USB 3 is seen in the System Report. Tried with a USB 3 flash drive, speed up to 5GB/s. Also tried with a USB 2 flash drive, also works. Just hope that it's a stable kext that will continue to work. Used to have PXCHD usb 3 kext and it was so unreliable. sometimes it works, some times not or it would crash. I have a USB 3 PCIe card from Orico with Fresco Logic FL1009 chipset which works natively with Mountain Lion 10.8.2 and higher, that's why I was eager to get ML installed but if this works well, I'm willing to stick with Lion 10.7.5 since I no way could install ML onto my mini tower. I will update if something goes wrong with the kext. thank you so much everyone for helping. kd

I'm so hard pressed to get ML installed is because I have an Orico USB 3 card that works natively with ML 10.8.2, but not on Lion. 2ndly, there have been threads reporting that ML can be installed on dell 745 mini tower but when I tried, no success. Unless, there is a 3rd party kext to work for USB 3 Fresco Logic chipset that would work for Lion. thanx. kd

Update..... so, I prepared as guide: - prepare Mountain Lion usb installer with myhack - install OSXLatitude Lion EDP /extra folder for dell optiplex 745 to myhack usb installer - boot up with usb installer - at bootloader, select myhack os x usb - right off the bat, got an error saying something like "Mach- O file has bad magic number" then it reboots and back to the bootloader screen not sure what that means, was it because I installed a Lion EDP onto a Mountain Lion USB installer? kate d updating.... after googling, someone suggested to delete arch=i386 from org.chameleon.boot.plist. I did that and it booted ok then........REBOOTS! the screen scrolled so fast i couldn't read what it said before rebooting. I saw a bunch of UHCI controller......something and something 'legacy'......but couldn't catch the last line before reboots?????

I will definitely try lion bootpack w ML installer. I have read that it is possible to install ML but when I tried the exact same method, did not work for me. Kate

I checked the compatibility page, there is no Mountian Lion bootpack for dell optiplex 745, unless I can use the lion bootpack. Thanx

Thank you so much for responding. I was desperate to get ML installed, so I tried just about any guides/methods to get it done but nothing is done. What would you recommend me try? Is there an optiplex 745 OSXL bootpack for ML and how do I apply that to myhack USB installer? Or should I just use generatepstates=no for no with my USB installer? I do not think I can set up generatepstates in bios 2.6.6 Thanks Katie

I have been trying to install ML onto my dell opt 745 mini tower forever long without any success and wondering if anyone can help me. System Specs: - dell optiplex 745 mini tower - motherboard ORF703, socket 775LLGA, Intel chipset Q965 (ICH8/R) - CPU Intel Core 2 Duo E6400 @ 2.13GHz - 8GB DDR2 RAM - Broadcom NetXtreme 57xx Gigabit Controller - AMD HD Audio - video card: original ATI Radeon HD4650, swapped with Nvidia Geforce 8600 GT (from another system that already running ML) and recently purchased Nvidia Geforce 640 GT for better compatibility with ML History...... - Dual boot windows 7 + iFail L2 (manually updated to 10.7.5) on an SSD - tried MANY guides (tonycrapx86 unifail & xfail, Niresh, iFail ML2, insanelymac, myhack and Sereivathanak Mao to install ML - via USB stick or HDD partition) onto a separate HDD others than the dual boot SSD - BIOS set to Legacy mode and Reporting OFF - used ML 10.8 or 10.8.2 InstallESD.dmg or .app in Applications - tried with just USB installer and a singe HDD, tried with all HDDs/SSD enabled, tried different HDDs...... - used different bootloaders and different boot flags (-v, -f, -F. -x, GraphicsEnabler=No/Yes, cpus=1, PCIRootUID=0/1, PCIRoot=0/1, npci=0x2000/3000, UseKernelCache=No, ) - tried to update from Lion to ML - formatted both USB and installing HDD with either MBR or GUID End Results (regardless of which guide)..........ALL THE SAME!!!! - CONTINOUS reboots as soon as some kexts are loaded after chameleon bootloader and NEVER able to get to the installer screen - few occasions, KP at 'uptime in nanoseconds' I KNOW that it's possible because I've read threads that said have been done. I'ver tried those exact methods that worked for other dell optiplex 745 mini towers but I still have THE SAME results, REBOOTS!!!! Anyone has any ideas? Anyone can shed some lights? much appreciated if anyone can help me. If you need further infos, please ask. Thank you in advance. Katie D

How did you manage to install ML on your minitower optiplex 745. My system keeps rebooting after the bootloader. Thank you Katie D