How to Get Rid of The 3403F Error Code?

Owners of older Macs prefer Mac OS X Snow Leopard to newer versions of macOS. The preference stems from the fact that dated Mac machines become unusably slow after OS upgrade. The drop in the performance can be ascribed to the higher CPU and RAM loads of the newest versions of macOS, which hamstring hardware of Macs purchased more than seven years ago. Therefore, it stands to reason to keep using time-tested Mac OS X Snow Leopard to preserve a reasonable level of performance and responsiveness of a Mac.

When replacing a hard drive on their old Macs, users have to reinstall OS X. Although it can be done fairly easy with the help of Internet Recovery, dated Mac models do not support this feature. Instead of entering into the recovery mode, they present a user with the 3403F error code. The article describes how to reinstall the OS X on a new drive with the help of a Software Restore DVD.

How to Reinstall Mac OS X without errors?

reinstall mac os xBefore detailing the reinstallation process, it is important to note that one shouldn’t attempt it without backing up their data. After preventing the irreversible file loss, it is time to reinstall the Mac OS X. Given that the Internet Recovery option is not available, it is necessary to use a Software Restore DVD that came with a Mac. Find the disc or purchase one on the Internet. Then, follow the steps below:

  1. Start the Mac;
  2. Open the optical drive and insert the DVD into it;
  3. Reboot the Mac;
  4. Upon hearing the Mac startup chime, hold down the C key;
  5. Release the key after the Apple logo, and a spinning gear appear on the screen;
  6. In the installer window that opens, select the needed language and click on the Continue button;
  7. In the menu, open the Utilities tab and select Disk Utility;
  8. In the utility, select the hard drive in the list;
  9. Click on the Partition tab;
  10. Click on the Volume Scheme heading;
  11. In the drop-down menu, set the value 1 next to the number of partitions;
  12. Click on the Options tab and select GUID;
  13. Click the OK button;
  14. In the Format menu, set the default file format of the partition—Mac OS Extended (Journaled);
  15. Set the size of the partition in the Size field and enter its name in the Name field;
  16. Click on the Apply
  17. Quit Disk Utility;
  18. Continue the installation process by following instructions in the installer.

The method of reinstalling Mac OS X described above should only be used by those Mac owners who want to replace an old hard drive with a new one. Those Mac OS X Snow Leopard users who want to reinstall the OS on their old hard drive, don’t need to go to such lengths. Instead, they can utilize the Recovery HD partition, which is automatically created by the system during the initial OS installation. However, it should be noted that this partition might be missing if the OS has been installed on the drive with a large number of partitions. The Recovery HD partition can also be removed by the restoration from a cloned backup preceded by formatting and repartitioning of the drive.