![]() ![]() I’m not always right, but I verify my statements whenever possible. User disputes my statements about Hibernate ![]() See How to Delete a Space-Hogging Sleep File sleepimage for details on forcing Hibernate mode to be off. Nor have I had any issues with my MacBook Pros, though presumably it would occur when and if the battery were nearly fully drained. To wit, I have not gone and forced my Mac Pro into an unsupported mode to invent a problem. I am unable to reproduce any sleep issue on my Macs, presumably because there isn’t any sleep issue. I sleep my Mac Pro with its triple-SSD RAID-0 stripe multiple times per day. Most of these have been in use nearly a year now, with zero sleep issues. Over the past year, I bought and installed six OWC SSDs in four different Macs: two Mac Pros and two MacBook Pros. OWC has a Mac updater in progress but it’s not available quite yet. At present, SSDs in the field can update their firmware with a Windows-based updater.A Sandforce firmware update addresses the Hibernate issue, OWC has just finished validating and tested the new firmware, and all OWC SSDs that are now shipping as of Manow have the latest firmware.This is the information that I have from OWC: That’s a lot if you have a small SSD where space is limited, and it takes a relatively long time to write that file when entering Hibernate mode. Hibernate mode sucks up disk space equivalent to the amount of memory, e.g., 8GB on a MacBook Pro with 8GB memory, 16GB on a MBP with 16GB memory.You can force on Hibernate mode and cause yourself grief.There is some possibility that Apple’s Migration Assistant sets Hibernate mode on non-laptop systems when transferring data- a bug. ![]() Hibernate mode is not supported on the Mac Pro, iMac, MacMini, or even the MacBook Air (though MBAir uses a very similar Standby mode, and no know issues with OWC SSDs there).Apple does not support Hibernate mode on any Macs except the MacBook and MacBook Pro, and even on the MacBook Pro, Hibernate mode is invoked only when the battery is about to be drained (a few percent remaining).The issue is (was) a Sandforce firmware issue, and is (was) not specific to OWC SSDs, it applies to any brand with the Sandforce controller. Hibernate mode is not sleep mode, and I am unaware of any other sleep-like issue with OWC SSDs. It only came to my attention in the past few weeks, and I did not have enough data to understand the issue until recently. The conspiracy theorists have their panties in a bundle over this. The Hibernate issue has caused some consternation with a few Mac users that have deliberately (or perhaps inadvertently) activated the use of Hibernate mode. Force Hibernate mode off as described further below. Hibernate is NOT sleep mode, it is an entirely different mode in which the entire contents of memory are written to a huge file on disk. There is an outstanding issue (now resolved) with OWC solid state drives and any Sandforce-based SSD when Hibernate mode is invoked on a Mac: the Mac won’t wake up properly if forced into Hibernate mode. “Doctor, it hurts when I do that!” Doctor: Don’t do that! SEND FEEDBACK Related: laptop, Mac Pro, MacBook, MacBook Pro, memory, Other World Computing, SSD
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