Fix a Windows boot loop with AHCI

My wife’s computer was stuck in a Windows boot loop. We’d get the Windows 7 boot screen, and it would display a single pixel of the Windows 7 logo, then reboot itself endlessly. Booting in safe mode made it fail on classpnp.sys.

Any number of things can cause this, and it usually happens after you swap a motherboard. Enabling AHCI turned out to be the fix. Enabling AHCI also can be easier said than done, but I figured it out. She’s running Windows 7 (for now) but these same tricks should also work for Windows 10.

Read more

When will SSDs be cheaper than hard drives?

When will SSDs be cheaper than hard drives?

When will SSDs be cheaper than hard drives? Based on history, it’s possible to make an educated guess, and I’m going to do it.

Back in 2011, I noticed that historical hard drive pricing fell in line pretty nicely with Moore’s Law, and predicted that SSDs would do the same. I predicted that SSDs would reach 25 cents per gigabyte sometime in 2016, and was wrong. They hit that price in 2015. So I was late by a few months.

But I’m still willing to try to predict when SSDs will cost less than hard drives. I’ll predict when they’ll hit parity too. SSDs work differently from hard drives but their pricing trend is frighteningly similar.

Read more

Is TRIM better than Native Command Queuing?

Another question from the big bag ‘o search queries: When you’re shopping for an SSD, is TRIM better than Native Command Queuing?

It’s an interesting question, and my first inclination is to say no, because TRIM and NCQ solve two similar but distinctly different problems. But the more I think about it, the more I understand why it’s possible to confuse the two.

Read more

A bargain SSD for the masses

I spotted a bargain SSD: The Kingston SSDNow V+100 96 GB  is available at Amazon for $130. (It’s available other places for about the same price, but with Amazon’s free shipping, it’s probably cheaper there.) It uses a Toshiba controller that (by some accounts) lacks NCQ, but other than that, it’s a modern controller, and it has a good track record, having been the controller Apple used in its Macbook Air.
Read more

WordPress Appliance - Powered by TurnKey Linux