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Diffstat (limited to 'doc/sd_card.txt')
| -rw-r--r-- | doc/sd_card.txt | 42 |
1 files changed, 0 insertions, 42 deletions
diff --git a/doc/sd_card.txt b/doc/sd_card.txt deleted file mode 100644 index 9cc34d6..0000000 --- a/doc/sd_card.txt +++ /dev/null @@ -1,42 +0,0 @@ - -torouter is intended to boot and run from an SD. It could theoretically also -run from an internal microSD card, a USB stick, or an eSATA drive, but -specifying use of the SD card makes support, development, and documentation -easier. The SD card can easily be popped out of the router and reflashed with a -new image. - -The SD card should be at least 2GB in size and support reasonable read/write -speeds, so probably a "class 6" quality card. - -You really should get a decent card: there can be an order of magnitude -difference in performance between a cheap card and a fast card. - -A quick (but inconclusive?) way to check read and write card performance on a -high-performance machine: - - $ # unmount the card for read test - $ hdparm -t /dev/sdb # iff /dev/sdb is the card - $ # mount the card for write test - $ dd count=10 bs=1M if=/dev/urandom of=/mnt/disktest - - -HOWTO Flash to an SD Card ----------------------------- - -Insert a 4GB+ SD card into to your dev computer (using an adapter if -necessary). ALL DATA AND PARTITIONS WILL BE DELETED. - -Use lsblk to figure out which block device the card is (eg, /dev/sdc). - -Copy over the image (eg, binary.img) with the dd utility: - - $ dd if=binary.img of=/dev/sdc bs=1M - - -Potential Improvements -------------------------- - -Block-aligned partitions may give significantly better write performance: - -http://linux-howto-guide.blogspot.de/2009/10/increase-usb-flash-drive-write-speed.html -http://www.olpcnews.com/forum/index.php?topic=4993.0 |