|
2008-03-31
, 13:53
|
Posts: 110 |
Thanked: 12 times |
Joined on Oct 2007
@ Cambridge, UK
|
#332
|
|
2008-04-01
, 19:36
|
Posts: 11 |
Thanked: 0 times |
Joined on Mar 2008
|
#333
|
|
2008-04-05
, 23:39
|
Posts: 4,030 |
Thanked: 1,633 times |
Joined on Jul 2007
@ nd usa
|
#334
|
... "ldconfig: can't open configuration file /etc/ld.so.conf: no such file or directory." Any advice?
|
2008-04-25
, 23:26
|
|
Moderator |
Posts: 7,109 |
Thanked: 8,820 times |
Joined on Oct 2007
@ Vancouver, BC, Canada
|
#335
|
Point is that it looks like both partition table and FAT layout is tuned to be aligned with physical flash blocks. By creating random partition table, speed (and maybe even reliability and durability) may go down.
See this article for details
http://www.hjreggel.net/cardspeed/cs_calign.html
So maybe, if nupgrade.sh does the partition layout, it would be nice if it left at least the beginning of first FAT partition alone.
It is hard to know how important it is, maybe not much. YMMV
When I got my 8GB SDHC card I found that first 4MB of the card is 'wasted' and partition begins on block 8192. This is confirmed in the document mentioned above. There is perhaps some reason for this. I think this may be related to erase blocks and grouping of blocks for internal wear level logic. Maybe they try to prevent wearing off the beginning of the card (as it may contain some critical low level data).
This is a bit of black magic. If you are interested, start reading from page 66 of http://www.sdcard.org/about/memory_c...Layer_Spec.pdf
Looks like the size of Allocation Unit (AU) is 4MB for big cards. so it may make sense to aling beginning of partition at 4MB and data blocks after FAT table at 8MB.
sfdisk -l -uM
Device Start End MiB #blocks Id System /dev/mmcblk0p1 4 7821 7818 8005632 b W95 FAT32 /dev/mmcblk1p1 4 7819 7816 8003584 b W95 FAT32
|
2008-04-26
, 09:21
|
|
Moderator |
Posts: 7,109 |
Thanked: 8,820 times |
Joined on Oct 2007
@ Vancouver, BC, Canada
|
#336
|
N800 wuth OS2008.
uname -r returns 2.6.21-omap1 which seems right to me but I still got unable to locate mbcache.ko and carried on which trashed my partition because it was writing to itself. Ah well, I got it to work fine and thanks again for the brilliant script
|
2008-05-11
, 07:54
|
Posts: 86 |
Thanked: 12 times |
Joined on Mar 2008
|
#337
|
|
2008-05-11
, 13:55
|
Posts: 4,030 |
Thanked: 1,633 times |
Joined on Jul 2007
@ nd usa
|
#338
|
I have corrupted my memory card. A reinstall shows now I have divided my flash into 2 partions instead of the memory car. I now cannot reflash my N700 to recreate the fs on the card. How do I restore the old boot menu to get into the device again?
Any help is appreciated....
|
2008-05-11
, 15:19
|
Posts: 86 |
Thanked: 12 times |
Joined on Mar 2008
|
#339
|
What tablet you are using and what happens when attempted to boot, 770, N800 or N810?
bun
|
2008-05-11
, 18:39
|
Posts: 1,950 |
Thanked: 1,174 times |
Joined on Jan 2008
@ Seattle, USA
|
#340
|
Many thanks for the content in this thread. However is there any chance someone is working on summarizing it for the Wiki?
My problem is that I rarely get to dedicate much continuous time to the task of getting my 810 to boot from external flash
(or any other task)
For instance yesterday I sat down to go thru steps 1-6,
and in this thread and this thread there are over 580 messages for the similar problem.
I got hung up at step 6, had to download it three times. Had to repair/diagnose two external hard drives for my daughter, cook several meals, vacuum, repair the network connections for the house (a wireless usb AP went down) redo the BT keyboard connection (took over 30 minutes), take out the trash, fix a door, finish grocery shopping, and all in almost random order, oh - and charge the tablet.
Then at post #288 I see new instructions for nupgrade.sh, and am wondering what else is in the other 579 posts.
So - if it's going to be "wikified" soon I'll wait rather than try to keep the posts organized in my brain.
Again - thanks greatly for at least letting me realize the possibilities.
N810, iGo bt kb, Diablo, 10Gb storage onboard instead of a Thinkpad
OTG w/ unlimited storage!!
Put a penguin in your pocket!!
PLEASE use the Wiki
Last edited by gemniii42; 2008-03-31 at 14:51. Reason: more correct #'s