I put in my new SSD card in the 16 lane slot 2 and it works well around 650MB/sec read and write. I often have hangups booting my mid 2012 MacPro of the internal 4TB 8 partition startup drive. This has always been a slight pain on this computer. I have 8 startup partitions and I move forward with major upgrades and revisions. I've had the same hang on startup where it will be booting with the spinning gear and then just restarts on it's own and then hangs booting on the spinning gear and I have to hold the power switch down to shut off the computer. Then on restart holding the option key to select the startup drive when I pick the drive I get a progress bar at the bottom of the start up screen. The bar takes a minute or two to complete and then the spinning gear goes and things startup. It's always been a pain even with the original 1TB drive it came with. Each of the 8 partitions of startup drive have exhibited this behavior. The partitions vary from 10.6.8 to 10.7 and finally 10.8.5. Now I carbon copy cloned my latest 10.8.5 HD to a 480GB partition on my new PCI SSD card. I've got two 480 GB partitions. The first time I tried to CCC to it I got an error so I repartioned the new SSD and repaired permissions on the HD as well as rebuilt the directory using diskwarrior. The permissions rebuilt but durning the directory rebuild it stalled near the end when trying to fix 3 overlapping files. I rebooted after that and redid the Carbon Copy Clone to the new SSD partition and that time it worked without error.
Now startup and shutdown are much quicker saving several minutes, which is no surprise. I've rebooted about 5 times now and have not experienced the fairly frequent start up hang I would get from the 4TB Hitachi Deskstar drive. I'd been told MacPros don't really care for 4TB drives but since I've had the same issues even with the original hard drive I figured the 4TB are fine. Does anybody have any idea why switching to the SSD drive with a clone of the same internal hard drive system would boot more reliably? I realize it should be much faster but why the hang on the internal drives when booting. The hangs happen about every 5 to 6 startups on the HD. I'm looking forward to not seeing them on the SSD but only time will tell if that will happen.
John Moore
Barking Trout Productions
Studio City, CA
bigfish@pacbell.net
Barking Trout Productions
Studio City, CA
bigfish@pacbell.net
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Posted by: John Moore <bigfish@pacbell.net>
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