Jump to content
InsanelyMac Forum


Just Joined
  • Content count

  • Joined

  • Last visited

About Beachcomber

  • Rank
    InsanelyMac Protégé
  1. Beachcomber

    Plugged USB devices not working

    Here's what is happening to me, and how I resolved it. Maybe it will be of some use. I am having this issue and am running 10.4.8, not 10.4.10. 1. Make sure you install JaS 10.4.8 with the correct hardware for your machine. I had some serious issues with USB with the default installation; once I set up everything correctly it started to work but with some problems. Prior to that, USB wasn't working at all. After this, USB worked but was sporadic. Anytime I had a USB device plugged in at boot, the system wouldn't boot all the way. Yet occasionally it did work. If I plugged in the USB device once booted, the system slowed to a crawl. Go to step #2. 2. Disable Legacy USB support in your BIOS. 3. Unplug all USB devices and boot your machine. 4. Go to /System/Library/Extensions and drag IOUSBMassStorageClass.kext to your desktop. This will make a copy. Now drag it from /System/Library/Extensions to your Trash and empty it, entering your Admin password. 5. Reboot Once this is done, USB devices (except those in the Mass Storage category) will work. I had to do this to get my USB headphones, keyboard, and trackball to work properly. Otherwise I can't do anything. As mentioned in another post, the problem may be due to a bad signal received from the USB port that is not handled correctly by MacOS. I will try the updated driver out soon, but for now I used my solution because I needed other functions like audio asap rather than iPods and pen drives. If you need to reinstall the IOUSBMassStorageClass.kext, just drag it to the correct place, authenticate, then go to Disk Utility and Repair Permissions. If you don't do this, the driver will have the wrong permissions and will throw an error on boot.
  2. Beachcomber

    EBIOS Error During Install DVD Boot

    I can confirm the following, with a 1x burned DVD: 1. A DVD with JaS 10.4.6 boots a Lenovo laptop fine, and I can install MacOSX without issues (I do not have sound or wireless however, and I kinda need those...so I wiped it clean and reinstalled Vista.) 2. The Windows version of Parallels on the same laptop attempts to boot the same OSX DVD in a blank virtual machine and gets the EBIOS error. There is clearly something up with how the drive is emulated. It is NOT a dirty disk, it is NOT a botched burn. 3. VMWare on same machine does boot the DVD and I can install MacOSX 10.4.6. I have done this installation and wiping many times now on this machine, and even burned a new DVD. It always installs natively, but won't in the Parallels emulation.