09-29-2020, 07:10 PM
I'll get blasted for this surely, but just don't use sudo. All your data should be backed up, because yes, dd can cause disaster with one errant keystroke in any case. Just be root. It makes this so much simpler. You don't have to log in as root, use `su` the old fashioned way. Be deliberate. Errors can be very costly.
bs=64k is repeatably the fastest of 16k, 32k, 64k, 128k, 256k, 512k, 1m, 2m, 4m, 8m, 16m on my PBP with the SD cards I use, running NetBSD-current 9.99.72. The SD card I use are the Sandisk cards that GoPro recommended for the Hero 3+. On my P4-based machine, 256k is fastest. On my fastest desktop machine, 8m and 16m fare very similar, as the fastest. Of course, your mileage will likely vary drastically.
bs=64k is repeatably the fastest of 16k, 32k, 64k, 128k, 256k, 512k, 1m, 2m, 4m, 8m, 16m on my PBP with the SD cards I use, running NetBSD-current 9.99.72. The SD card I use are the Sandisk cards that GoPro recommended for the Hero 3+. On my P4-based machine, 256k is fastest. On my fastest desktop machine, 8m and 16m fare very similar, as the fastest. Of course, your mileage will likely vary drastically.
