Apple Fixes 2023 Mac Pro Hard Drive Issue in macOS Ventura 13.5 - MacRumors
Skip to Content

Apple Fixes 2023 Mac Pro Hard Drive Issue in macOS Ventura 13.5

by

In a support document published last month, Apple said certain SATA hard drives might unexpectedly disconnect from the 2023 Mac Pro after the computer wakes from sleep. Apple said it was aware of the issue and would fix it in a future macOS update, and the company followed through on that promise today.

Mac Pro Feature Teal
Apple updated the support document today to indicate that the issue has been resolved in the macOS Ventura 13.5 update released today, so users simply need to update their Mac. The issue will also likely be resolved in the macOS Sonoma beta.

The Issue

While the Mac Pro is configured with SSD storage, it has SATA ports for connecting internal hard drives, and sometimes the drives could disconnect due to a bug.

"Certain models of internal SATA drives might unexpectedly disconnect from your computer after your Mac wakes from sleep," said Apple. "This can occur if your Mac automatically goes to sleep or if you manually put your Mac to sleep. If you see a message that your disk was not ejected properly, you can restart your Mac to reconnect to the drive."

New Mac Pro

Unveiled at WWDC last month, the new Mac Pro features Apple's M2 Ultra chip. The desktop tower has the same design as the Intel-based model from 2019, but lacks graphics card support and user-upgradeable RAM due to Apple silicon's unified architecture. Customers who do not need PCIe expansion should consider the Mac Studio instead.

Buyer's Guide: Mac Pro (Don't Buy)
Related Forums: macOS Ventura, Mac Pro

Popular Stories

Four iPhone 18 Pro Colors Mock Feature

iPhone 18 Pro Launching Later This Year With These 10 New Features

Tuesday May 26, 2026 6:32 am PDT by
While the iPhone 18 Pro and iPhone 18 Pro Max are not launching until September, there are already plenty of rumors about the devices. It was initially reported that the iPhone 18 Pro models would have fully under-screen Face ID, with only a front camera visible in the top-left corner of the screen. However, the latest rumors indicate that only one Face ID component will be moved under the...
Read Full Article • 52 comments
Apple Watch Blood Glucose Monitoring Feature 2

Apple Watch for Diabetes: The Latest on Apple's Plans for Non-Invasive Blood Sugar Monitoring

Tuesday May 26, 2026 9:30 am PDT by
For many years now, it has been rumored that the Apple Watch will eventually gain non-invasive blood sugar monitoring capabilities, which would enable millions of people with diabetes to track their blood glucose levels without needing to prick their skin with a needle or wear a dedicated continuous glucose monitor. According to Bloomberg's Mark Gurman, Apple recently shifted oversight of...
Read Full Article • 75 comments
apple wallet drivers license feature iPhone 15 pro

Apple Just Expanded iPhone Driver's License Feature to Arkansas

Wednesday May 27, 2026 9:41 am PDT by
In select U.S. states, residents can add their driver's license or state ID to the Apple Wallet app on the iPhone and Apple Watch, and then use it to display proof of identity or age at select airports and businesses, and in select apps. Starting today, the feature is available in Arkansas, which is the 14th state to offer it. However, it may take some time to roll out to all users. To...
Read Full Article • 48 comments

Top Rated Comments

HobeSoundDarryl Avatar
HobeSoundDarryl
37 months ago
Amen. Limited only to Mac Pro or does this bug fix also apply to all other Macs? It would be nice for external enclosures hooked up via USB to make the U mean what it is supposed to be mean again... instead of being a "hit or miss", works-for-some-enclosures-but-not-all proposition.

I have a Mac Studio Ultra and a very important enclosure will not maintain a connection for more than about 3 hours, even without any sleep during that 3 hours. In fact, it "unexpectedly ejects" even when actively transferring files to/from it (so neither end is asleep).

Unhook it from Studio Ultra and hook it to old Intel Macs running macOS BEFORE Big Sur and all is fine again (same cable, same enclosure, same drives, same connection type).

* 2 Old Macs or a PC = stable connection.
* 1 "latest & greatest", "most powerful" Mac = unexpected ejections within about 3 hours.

I know this is not a problem for everyone: some enclosures (including some of my own, including one from the same brand) work just fine. But I'm far from the only one with this problem (many threads about this, identifying many different enclosures with this issue). And I've tested enough to feel very confident that this is a bug(s) in macOS (so please fans/ADF: no "redirection" posts trying to blame enclosure, cable, firmware, etc. Been there, tested through ALL of that more than a few times). Hopefully this fix for Mac Pro is actually a fix for all Macs.

I'd love to see some people not enjoying this same bug (too) chime in that this update resolved it for their (not Mac Pro) Macs.
Score: 13 Votes (Like | Disagree)
EugW Avatar
EugW
37 months ago
Good to hear. Now if they could only fix this issue with USB drives, that'd be great.
Score: 13 Votes (Like | Disagree)
Realityck Avatar
Realityck
37 months ago
https://support.apple.com/en-us/HT213778

Nice typos with MacOS version, it’s suppose to be 13, not 12.

If you see 'disk not ejected properly' on your Mac Pro (2023)
If an internal SATA drive unexpectedly disconnects from your Mac Pro, update to macOS Ventura 12.5 or later ('https://support.apple.com/kb/HT201541').

Certain models of internal SATA drives might unexpectedly disconnect from your computer after your Mac wakes from sleep. This can occur if your Mac automatically goes to sleep or if you manually put your Mac to sleep.
To resolve this issue, update to macOS Ventura 12.5 or later ('https://support.apple.com/kb/HT201541').
Published Date: July 24, 2023
Score: 7 Votes (Like | Disagree)
macduke Avatar
macduke
37 months ago
This the most Apple story ever.


* $7000 machine
* Spinning disk drives
* Took a month and a half to fix
Score: 5 Votes (Like | Disagree)
Schizoid Avatar
Schizoid
37 months ago
The seven people that bought these Macs are overjoyed.
Score: 4 Votes (Like | Disagree)
oogje Avatar
oogje
37 months ago
13.5 apparently also fixes SoftRaid ('https://forums.softraid.com/ventura-forum/kernel-panics-softraid-7-5/paged/4/#post-19651') related Kernel panics with M2 Studio and 2023 Mac Pro.
Score: 4 Votes (Like | Disagree)
Read All Comments