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SSD Issues with MacBook and MacBook Pro


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We conduct numerous tests at Apple Labs@Infinite Loop. Currently we have found issues ONLY IF you are using the Disk Utility>Restore to clone a previous image of your old drive. The Restore feature seems to be corrupting the GUID Partition Table. We currently recommend for Mac users to do a fresh install. If you need to migrate the old data from your previous HDD, either manually transfer the data or use the Migration Assistant.


For further support, please list the following information:


1. SSD Model

2. MacBook/Pro model number

3. OSX version

4. Install method: Fresh Install, Clone Software or OSX>Disk Utility>Restore

5. Brief description of issue/s

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@ Legend:


I´ve configured a Macbook Pro 13" (Mid 2009) with two X128 in Raid0.


OS is Snow Leopard 10.6.1


It´s working good and Speed is amazing.


Did a clean install and migrated old system to the new OS.


Here are some facts:


Installation of Snow Leopard using a 8GB USB Stick: 12:48 mins from start to reboot


Systemstart from Power-on to ready-to-use: 19 seconds


xBench (compared to Seagate Momentus 500GB 7200rpm):


Results 49.00 with Seagate Momentus 500GB/7200

System Info

Xbench Version 1.3

System Version 10.6.1 (10B504)

Physical RAM 4096 MB

Model MacBookPro5,5

Drive Type ST9500420AS

Disk Test 49.00

Sequential 98.92

Uncached Write 144.12 88.49 MB/sec [4K blocks]

Uncached Write 154.00 87.14 MB/sec [256K blocks]

Uncached Read 46.45 13.60 MB/sec [4K blocks]

Uncached Read 182.47 91.71 MB/sec [256K blocks]

Random 32.57

Uncached Write 10.23 1.08 MB/sec [4K blocks]

Uncached Write 165.19 52.88 MB/sec [256K blocks]

Uncached Read 83.59 0.59 MB/sec [4K blocks]

Uncached Read 140.87 26.14 MB/sec [256K blocks]



Results 273.27 with 2 Corsair X128 in Raid0

System Info

Xbench Version 1.3

System Version 10.6.1 (10B504)

Physical RAM 4096 MB

Model MacBookPro5,5

Drive Type Macintosh HD

Disk Test 273.27

Sequential 176.94

Uncached Write 214.35 131.61 MB/sec [4K blocks]

Uncached Write 423.91 239.85 MB/sec [256K blocks]

Uncached Read 71.85 21.03 MB/sec [4K blocks]

Uncached Read 600.83 301.97 MB/sec [256K blocks]

Random 599.86

Uncached Write 246.07 26.05 MB/sec [4K blocks]

Uncached Write 773.46 247.61 MB/sec [256K blocks]

Uncached Read 1890.39 13.40 MB/sec [4K blocks]

Uncached Read 1278.14 237.17 MB/sec [256K blocks]

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FWIW I did an installation with DiskUtils restore today, pulling partitions to the fields (not the root hard disk). The DiskUtil while copying partition to partition said "Copying files ...". I've seen "Copying blocks ..." in the past too, not sure what would cause DU to use either form.
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