Apple today seeded Mavericks 10.9.5 build 13F24 to developers, just over a week after seeding the fourth OS X 10.9.5 beta, build 13F18, and more than a month after releasing OS X 10.9.4 to the public.

The beta is available through the Software Update mechanism in the Mac App Store and through the Mac Developer Center.

build13f24
It is unclear what improvements the 10.9.5 update will bring to Mavericks, but it is likely to include bug fixes and stability enhancements. Apple is asking developers to focus on USB, USB Smart Cards, Graphics, Safari, Thunderbolt, and Gatekeeper.

Along with working on improvements to Mavericks, Apple is also beta testing OS X Yosemite, which is due to be released in the fall. The last Mavericks update, 10.9.4, added several Wi-Fi fixes and improved wake from sleep reliability.

Top Rated Comments

crjackson2134 Avatar
146 months ago
I'm really looking forward release. I just hope it will fix USB "External Disk was not Ejected Properly" error.
Score: 5 Votes (Like | Disagree)
groovyd Avatar
146 months ago
must be depressing being on the team of elves who fix last year's broken gifts.
Score: 4 Votes (Like | Disagree)
Detektiv-Pinky Avatar
146 months ago
You do now, but not in about two months.

<snip>

Anyone still on the BEST Mac OS X Snow Leopard..?:rolleyes:

I just upgraded from Snow Leopards a few months ago. I had no use of any of the features of Mavericks. As it stands I spend several days disabling the most annoying things like AutoSave, Versions and Message Center.

It was the simple fact that Apple stopped to issue security updates for the OS that forced me to switch. I am not looking forward to switch OS again soon...
Score: 4 Votes (Like | Disagree)
Eithanius Avatar
146 months ago
i'm dreadfully looking forward to this update, as well. i hope "stability fixes" include NVRM/Read Error/GPUPanic Kernel Panic issues associated with Mid-2010 MBP's w/ the Nvidia GT330m.

I will be holding my breath.

Nope... that is hardware issue...
Score: 4 Votes (Like | Disagree)
crjackson2134 Avatar
146 months ago
Nope, that requires the user (you) to stop pulling the plug on the External Disk without first unmounting the volume from the file system. :p
You need to do a little more research. Many! People are having this problem. Also, don't Assume so much. My drives are NEVER unplugged.

It's a common problem.
Score: 3 Votes (Like | Disagree)
OldMacUser Avatar
146 months ago
Nope, that requires the user (you) to stop pulling the plug on the External Disk without first unmounting the volume from the file system. :p

I have this error occurring repeatedly with a USB3 disk enclosure and it is not because of "pulling the plug" - the drive will randomly disconnect when attempting to write data to the disk.

Randomly in the sense that it can write 2GB of data, then disconnect, OR on another attempt, it will write about 500MB of data then disconnect.
Score: 3 Votes (Like | Disagree)

Popular Stories

2024 iPhone Boxes Feature

Apple Adjusts Trade-In Values for iPhones, iPads, Macs, and More

Thursday November 6, 2025 11:12 am PST by
Apple today updated its trade-in values for select iPhone, iPad, Mac, and Apple Watch models. Trade-ins can be completed on Apple's website, or at an Apple Store. The charts below provide an overview of Apple's current and previous trade-in values in the U.S., according to its website. Maximum values for most devices either decreased or saw no change, but the iPad Air received a slight bump. ...
Liquid Glass General Feature

Apple Shares Liquid Glass Design Gallery

Thursday November 6, 2025 2:45 pm PST by
Apple is promoting the new Liquid Glass design in iOS 26, showing off the ways that third-party developers are embracing the aesthetic in their apps. On its developer website, Apple is featuring a visual gallery that demonstrates how "teams of all sizes" are creating Liquid Glass experiences. The gallery features examples of Liquid Glass in apps for iPhone, iPad, Apple Watch, and Mac. Apple...
iOS 26

iOS 26.1 Available Now With These 8 New Features

Monday November 3, 2025 5:54 am PST by
Following more than a month of beta testing, Apple released iOS 26.1 on Monday, November 3. The update includes a handful of new features and changes, including the ability to adjust the look of Liquid Glass and more. Below, we outline iOS 26.1's key new features. Liquid Glass Toggle iOS 26.1 lets you choose your preferred look for Liquid Glass. In the Settings app, under Display...
airtag purple

Apple's Website Lists AirTag 4-Pack at Shockingly Low Price [Updated]

Friday November 7, 2025 6:40 am PST by
Apple's online store in the U.S. is suddenly offering a pack of four AirTags for just $29, which is the same price as a single AirTag. This is likely a pricing error, and it is unclear if orders will be fulfilled. Apple has not discounted the AirTag four-pack in any other countries that we checked. Delivery estimates are already pushing into late November to early December, suggesting...
Finder Siri Feature

Apple's New Siri Will Be Powered By Google Gemini

Wednesday November 5, 2025 11:57 am PST by
The smarter, more capable version of Siri that Apple is developing will be powered by Google Gemini, reports Bloomberg. Apple will pay Google approximately $1 billion per year for a 1.2 trillion parameter artificial intelligence model that was developed by Google. For context, parameters are a measure of how a model understands and responds to queries. More parameters generally means more...
apple watch se 3 always on

Apple to Remove iPhone-Apple Watch Wi-Fi Sync in EU With iOS 26.2

Thursday November 6, 2025 4:37 am PST by
Apple in iOS 26.2 will disable automatic Wi-Fi network syncing between iPhone and Apple Watch in the European Union to comply with the bloc's regulations, suggests a new report. Normally, when an iPhone connects to a new Wi-Fi network, it automatically shares the network credentials with the paired Apple Watch. This allows the watch to connect to the same network independently – for...
ikea smart home devices

IKEA Debuts 21 HomeKit-Compatible Smart Bulbs, Sensors, and Controls

Thursday November 6, 2025 4:08 pm PST by
IKEA today announced the upcoming launch of 21 new Matter-compatible smart home products that will be able to interface with HomeKit and the Apple Home app. There are sensors, lights, and control options, all of which will be reasonably priced. Some of the products are new, while some are updates to existing lines that IKEA previously offered. There are a series of new smart bulbs that are...
Home Hub Command Center with Dome Base Feature

Apple's 2026 Smart Home Revamp: All the Rumors

Wednesday November 5, 2025 3:54 pm PST by
It's been over a decade since Apple's HomeKit smart home platform launched, and it is overdue for an update. HomeKit and the Home app can no longer keep up with AI-powered solutions from other companies like Google and Amazon, but that's set to change with a smart home revamp that Apple has planned for 2026. Home Hub Apple is working on a home hub or "command center" that will serve as a...
apple tv logo physical

New Apple TV Intro Was Made With Practical Effects

Thursday November 6, 2025 7:02 am PST by
The all-new intro sequence for Apple TV was made with practical effects and shot in-camera, Ad Age reports. Rather than using digital techniques, the new sequence was made by shooting large glass versions of the Apple TV logo, with physical motion and changing lighting used to create effects. Apple partnered with TBWA\Media Arts Lab to create the intro. Ad Age released an exclusive look...