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Apple Computing Products:
macOS - Notebook Hardware
SSD Mystery
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<blockquote data-quote="XJ-linux" data-source="post: 1116348" data-attributes="member: 33722"><p>Sounds like something corrupt with the OS making it not bootable. TRIM might account for slow writes if all the blocks were "spoken for". Win7 simply reading from the non-booted device wouldn't have anything to do with whether garbage collection (TRIM) was performed. TRIM is an ongoing and progressive maintenance process which occurs over time, not a "codec" (so to speak) which allows the drive to suddenly become readable if the OS has TRIM.</p><p>You might try a couple of things...</p><p>Try booting from the installation DVD and use Disk Utility to find out whether the system actually sees any disk present. If the disk is physically there, but Disk Utility doesn't show it as being physically in the laptop, the disk is dead.</p><p>If Disk Utility shows it is there, try running the Verify Disk function and see if it identifies or fixes any issues. If it does, the run the Repair function and then try rebooting.</p><p>If that doesn't help and you have another disk which will fit into the laptop, try installing OS X on to that and then using migration assistant to move your data back. You can then decide whether you want to move your "fresh" install back on to the SSD via SuperDuper or the like.</p><p>Once it's moved back to the SSD, you will have for all intent and purpose and TRIM'ed disk and also a fresh install and repaired (new) OS.</p></blockquote><p></p>
[QUOTE="XJ-linux, post: 1116348, member: 33722"] Sounds like something corrupt with the OS making it not bootable. TRIM might account for slow writes if all the blocks were "spoken for". Win7 simply reading from the non-booted device wouldn't have anything to do with whether garbage collection (TRIM) was performed. TRIM is an ongoing and progressive maintenance process which occurs over time, not a "codec" (so to speak) which allows the drive to suddenly become readable if the OS has TRIM. You might try a couple of things... Try booting from the installation DVD and use Disk Utility to find out whether the system actually sees any disk present. If the disk is physically there, but Disk Utility doesn't show it as being physically in the laptop, the disk is dead. If Disk Utility shows it is there, try running the Verify Disk function and see if it identifies or fixes any issues. If it does, the run the Repair function and then try rebooting. If that doesn't help and you have another disk which will fit into the laptop, try installing OS X on to that and then using migration assistant to move your data back. You can then decide whether you want to move your "fresh" install back on to the SSD via SuperDuper or the like. Once it's moved back to the SSD, you will have for all intent and purpose and TRIM'ed disk and also a fresh install and repaired (new) OS. [/QUOTE]
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Apple Computing Products:
macOS - Notebook Hardware
SSD Mystery
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