The company also said it would resume selling systems "in the coming days." Those machines will run rather than Mac OS X.

Psystar, which began selling Mac clones in April 2008, has been battling in federal court in California since July 2008, when the Doral, Fla. firm, saying it violated copyright laws by preinstalling the Mac operating system on its machines.

Sales of , which Psystar launched in October, have been "voluntarily suspended" while the company seeks clarification from the courts about whether the software is legal, Psystar said in a . "Psystar feels it would be prudent to halt the sale of Rebel EFI while we explicitly ask the court for clarification on the legality of Rebel EFI."

Rebel EFI has been Psystar's only product since early December, when the company of all hardware, including the -based clones pre-loaded with , and agreed to pay Apple approximately $2.7 million if it loses planned appeals of a ruling by U.S. District Court Judge William Alsup.

On Dec. 15, Alsup issued an injunction that from selling Mac OS X-equipped computers, giving the small business until midnight Dec. 31 to comply. Although the injunction did not expressly include Rebel EFI, Alsup warned Psystar that at some point it could be held in contempt if it sold the software.