Installing Mac OS - An error occurred while preparing the installation...


Installing Mac OS X on iMac's blank formatted hard drive. Installation runs for 5-10 minutes and then fails with following error:

An error occurred while preparing the installation. Try running this application again.

Tried installing OS X El Capitan (10.11) and OS X Sierra (10.12) - the same error occurs in both cases.

Mac OS L2TP/IPsec VPN connects but no access to remote network


L2TP/IPsec VPN successfully connects to a remote VPN server, but Mac OS still has no access to the remote network.


To resolve the issue I had to select "Send all traffic over VPN connection" in VPN network Advanced settings.

Merge split iMac Fusion drive (SSD + HDD) back into one

These instructions shows how to merge an original iMac Fusion drive that for some (installing Windows, messing with Disk Utility) was split into separate SSD and HDD drives.

Warning: performing below steps will irrecoverably wipe both SSD and HDD drives. Make sure you have all your data backed up.

Parallels error "Windows cannot access \\psf..."


Following error is displayed when trying to open files stored on Mac's disk using Windows 10 running in Parallels. Error appears regardless of whether Coherence mode is enabled or not.


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