I've read that you can boot off of an SD card for a backup that has mac OS on it. I'm curious to know if it's faster than booting off of the hard drive. If it is, wouldn't work to just have the SD as your main boot drive?
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booting off of an SD card?
- Thread starter itsjustmeee
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The SD card runs off a USB 2.0 interface, so even if you buy the fastest SD cards, you're looking at maybe 15MB/s? I used a bunch of SD cards and they seem pretty slow compared to my internal HD in terms of sequential read and writes; however with the smallest files, they random performance is a bit better.
+1. Even firewire 400 (only 400 MBit/s max.) often performs better than USB 2.0 (480 MBit/s max.)
It works fine. but it takes a bit longer time to boot. i have a 30 mb/s sandisk SDHC extreme IV card and it boots in 39-41 sec. i only have it in case i get a disc fail so i can repair or extract data.