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Start up Gparted and find your SSD in the upper-right dropdown menu. Select it, and click on your first partition in the menu. Hit the Resize/Move button in the toolbar. Change the "Free Space Preceding" box to 2MB, uncheck "Round to Cylinders", and hit "Resize/Move". (If you're using a newer live CD, check the "MiB" box). Hit Apply once and let it do its thing.

Now hit Resize/Move again, and change the "Free Space Preceding" box to 1MB. Uncheck "Round to Cylinders" again, hit Resize/Move, then click Apply. Now your drive will be aligned to exactly 2048 blocks after the beginning of the disk, which allows for optimal SSD performance. Note that if you have multiple partitions on your SSD, you'll need to repeat this process for each partition, not just the first one on the disk.

Yes, moving it 2MB away then moving it back 1MB seems like a long, roundabout method, but Gparted measures space in a weird way. When you first start up Gparted, your partition will have less than 1MB of space preceding it, but Gparted will only measure it as 0-meaning if you align it to 1MB right off the bat, it'll keep the drive annoyingly misaligned at 1.03MB. If you set it to 2MB, hit Apply, and then move it back to 1MB, it works fine.