Talk:Booting the Neo FreeRunner from SD via U-Boot
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== Benefits == | == Benefits == | ||
What are the benefits of booting from SD? Does it improve the performance in terms of speed and/or non-SD RAM/ROM memory usage of the device? [[User:Pander|Pander]] 11:05, 20 July 2009 (UTC) | What are the benefits of booting from SD? Does it improve the performance in terms of speed and/or non-SD RAM/ROM memory usage of the device? [[User:Pander|Pander]] 11:05, 20 July 2009 (UTC) | ||
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+ | == Take care with inode size when formatting ext2 partitions == | ||
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+ | I noticed uboot was having difficulty reading the cards I had formatted using my linux box. Google to the rescue, I found the following discussion: | ||
+ | [http://www.nabble.com/Problems-with-ext2ls---SD-ts22728281.html#a22756563 Uboot Discussion] | ||
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+ | So apparently uboot is currently only reading ext2 partitions with an inode size of 128. Recent default is 256. I wonder if the mkfs with our distros defaults to 128? | ||
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+ | Workaround: mke2fs -I 128 /dev/sd* | ||
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+ | Hopefully uboot will be updated to allow default inodes to be recognized. | ||
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+ | --[[User:Undrwater|Undrwater]] 06:11, 14 August 2009 (UTC)Russell Dwiggins |
Revision as of 08:11, 14 August 2009
Contents |
Updating U-Boot
Can you link to instructions on updating the u-boot. I think this is it here.
sync after umount?
Using a sync after the umount is completely redundant right? After umount there is no block part in the kernel doing any caching, so there is nothing to actually sync anymore. So I think the sync should be removed. Bram
Benefits
What are the benefits of booting from SD? Does it improve the performance in terms of speed and/or non-SD RAM/ROM memory usage of the device? Pander 11:05, 20 July 2009 (UTC)
Take care with inode size when formatting ext2 partitions
I noticed uboot was having difficulty reading the cards I had formatted using my linux box. Google to the rescue, I found the following discussion: Uboot Discussion
So apparently uboot is currently only reading ext2 partitions with an inode size of 128. Recent default is 256. I wonder if the mkfs with our distros defaults to 128?
Workaround: mke2fs -I 128 /dev/sd*
Hopefully uboot will be updated to allow default inodes to be recognized.
--Undrwater 06:11, 14 August 2009 (UTC)Russell Dwiggins