The April 2014 update of Apple's 13" MacBook Air features refreshed dual-core i5 and i7 processors, plus slightly increased battery performance.

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Used SSD safety Concerns

My hard drive is broken and I need to buy a new one. When buying a used hard drive, is there any risk involved? For example, could my device be taken over by a virus or would I be liable for someone else's old data, for example?

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First, you are not liable for someone else's data why would you be? Thats assuming you bought the SSD from a reputable supplier.

As for viruses on the replacement SSD, I would recommend you create a bootable USB thumb drive with a virus checker installed with the latest definitions file if you are concerned. That way you can clean it off if you find one.

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First your machine does not have a hard drive. it uses a SSD stick.

MacBook Air 13" Early 2014 Solid-State Drive Replacement

Do what Dan said with the stick, but I'd wipe the drive with a reformat.

I really like to use the "write zeros" option in Disk Utilities when recycling any hard drive. If it fails I know the drive is no good. If it passes, either all the blocks are good or any bad blocks have been maped out in the directory.

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@Mayer - I don't think you ned to go that far, Formatting: Yes. Writing: Ones & Zeros No. Unlike disk drives SSD's don't get bad blocks, they get bad cells from writing to the same location. The onboard CPU on the SSD does a CRC check of each cells write to make sure the cell is good if not it grabs a spare cell to write the data. Basically, do the least about of alteration to the SSD to gain the most life.

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