Dennis, thanks for explaining how mount won't work. No 2nd BBB. Can I do cat of eMMC to read the contents of some of the files? The important files I need are c/cpp source text files. From the mSD, how do I specify the eMMC directory? Or somehow copy a block of the eMMC. Then search it to extract the text content. Blair
On Tuesday, June 25, 2019 at 12:49:41 PM UTC-4, Dennis Lee Bieber wrote: > > On Mon, 24 Jun 2019 19:23:54 -0700 (PDT), > [email protected] <javascript:> declaimed the > following: > > >Dennis, thanks for explaining an option. I have the original image on > mSD. > >Can that be used to recreate (copy or build) the proper partition table > on > >the eMMC? How is that done? Maybe the data will not be overwritten. If it > >does not work, I will lose all data anyway when reflash all. > > > > I don't know enough about what gets done when running the normal > flasher (eg: does it create partitions or rely on the eMMC already having > a > partition table; if it creates a partition table then only running that > part without formatting the partitions might give access). > > Copying the start of the SD card likely won't work either as a > true SD > card has a reserved section (for the "secure" functions that nobody > actually uses), so is likely in a different layout. > > >Based on the above dd command (I ran by mistake), maybe from mSD run: > >sudo mount /dev/mmcblk1 > > > >Then remove mSD and reboot. > > > > Won't work -- part of the reboot sequence is to dismount "disk" > file > systems. > > > >But I don't know if I have all the correct parameters such as block size > or > >count or destination. Thanks for any help. > > > > If you had a second BBB maybe a dd command to copy the start from > ITs > eMMC, put that (as a file) on the SD card, and dd command to write that > file to the bad system eMMC > > > I suspect short of being able to manually examine everything on > the > eMMC there may not be any way to recover. > > > -- > Wulfraed Dennis Lee Bieber AF6VN > [email protected] <javascript:> > http://wlfraed.microdiversity.freeddns.org/ > > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/d9acdfc3-9e36-4727-9f27-7af1ef888760%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
