Talk:Booting the Neo FreeRunner from SD via U-Boot
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− | = | + | == Updating U-Boot == |
− | + | Can you link to instructions on updating the u-boot. I think this is it [[Flashing_the_Neo_FreeRunner#Flashing_the_boot_loader_to_the_NAND|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. | |
− | + | [[User:Bram|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? [[User:Pander|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: | ||
+ | [http://www.nabble.com/Problems-with-ext2ls---SD-ts22728281.html#a22756563 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. | ||
+ | |||
+ | --[[User:Undrwater|Undrwater]] 06:11, 14 August 2009 (UTC)Russell Dwiggins |
Latest revision as of 11:29, 31 March 2010
Contents |
[edit] Updating U-Boot
Can you link to instructions on updating the u-boot. I think this is it here.
[edit] 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
[edit] 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)
[edit] 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