According to Gartner market researcher, Toshiba commanded 4.1% of the global PC market in Q1 2007, up 0.3 points year-over-year and increasing its shipments by 15.3% annually. The total available market of personal computers (which includes desktop PCs, mobile PCs and x86 servers) was approximately 62.719 million, which means that Toshiba supplied about 2.57 million of computers in Q1 2007.
With that small of a share, they'll have to play that just right. HP is going to one-up them, with dual-format players on the agenda. Personally, I think it will be the dual-format players that will win out overall. That could change if they end up being atrociously expensive, but if HP is planning to make them widely available they probably will be affordable. However, HD DVD will also get a boost from Acer who plans to roll it out soon, sitting now as the number three PC and notebook vendor worldwide.