- #CAN OS X DISK REPAIR DIRTY DRIVE PRO#
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Keep in mind that of these three options that people use, only the last one will truly "recondition" the drive. The use of Disk Utility is not the most optimal solution, especially on systems that do not already support TRIM, so for better results you can use a tool like " DiskTester" to perform a "recondition" routine on SSD drives, which should force the use of TRIM on the unused sections of the drive.
#CAN OS X DISK REPAIR DIRTY DRIVE FREE#
After this is done, restore the backup to the drive.Īnother option similar to the first is to use Disk Utility's "erase free space" option to write zeros to all unused portions of the drive. One option people resort to is to format the entire drive by first backing it up using Time Machine or a cloning utility, and then using Disk Utility when booted off an alternative volume to partition the drive and erase it by writing zeros to disk. To date, the most universal method for clearing up and reconditioning SSD drives in OS X has been to perform various erase routines:
This means that if you purchase a third-party SSD drive that supports TRIM, OS X will not use it.
#CAN OS X DISK REPAIR DIRTY DRIVE PRO#
While Apple has included SSD as options in its systems for a couple of years, the support for these garbage collection routines has only been implemented for the latest MacBook Pro systems, and only for SSD drives that are shipped with the systems.
#CAN OS X DISK REPAIR DIRTY DRIVE SOFTWARE#
These routines include the "TRIM" and "Secure Erase" ATA commands that, if supported in the drive's firmware, can be triggered by a software routine to perform the garbage collection routine on the drive. To combat this, drive manufacturers and various OS developers are including "garbage collection" routines that will slowly reset unused blocks on the drives in the background when the drives are not being accessed. The performance will not necessarily make your system crawl, or even drop to the speed of mechanical hard drives (especially for second-generation SSD drives), but may be notably slower than the expected performance. New SSD drives are shipped with their storage blocks in a ready state, and as a result the drives are very fast however, as the drive's blocks get progressively filled through use, the number of blocks that are left in the "ready" state will drop until eventually all writing processes by the system will have to wait for the drive to first reset the blocks being used. This procedure is done "on the fly" as the blocks are used, but it does take some overhead that will cut into performance. In SSD drives, however, the blocks that still contain unused data will need to be properly erased and set to a ready state before they can accept new data. In mechanical drives this makes no difference because the drive can easily write over used blocks, modifying them to contain the new data in one sweep. When data is deleted from a drive, the system does not remove the data itself, and instead just frees the blocks to be overwritten by modifying the drive's index and directory files.
The main reason for this has to do with the requirements needed for these drives to write data, where unlike mechanical drives, the SSD storage media needs to be in a ready or "empty" state before it can reliably accept data. We recently covered one of these situations where people were finding that SSD drives were taking abnormally long to boot, but another problem is more universal to the drives themselves, in that over time and use, the drive's speed will degrade.
#CAN OS X DISK REPAIR DIRTY DRIVE PLUS#
But a main reason for their increased use is much faster performance when compared with the average mechanical drive.Įven though performance is a major plus to these drives, there are a couple situations that can result in degraded SSD drive performance on Macs. These drives offer numerous benefits over older mechanical ones, including the use of less power, less heat generation, and reduced potential for mechanical damage.
#CAN OS X DISK REPAIR DIRTY DRIVE MAC#
Apple began offering SSD drives in MacBook Air systems in 2009, but now you can get them as a CTO option for nearly all Mac configurations. As their prices fall and capacities increase, SSD drives are becoming a more popular option, not only for laptops but also for consumer and pro desktop systems.
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