Hello guys, I posted some news on: http://ubuntuforums.org/showthread.php?t=2276498&page=2
I'm booting UEFI with two different partitions, iso files located on EXT4 partition... 2015-06-25 22:11 GMT-03:00 Israel <[email protected]>: > Hi, > I agree with Nio, in theory (or at least from what I can understand about > it) I also think a casper read-write partition would work. You might look > at the usb-creator source code: > http://bazaar.launchpad.net/~usb-creator-hackers/usb-creator/trunk/files > it is written in Python, so it may take some time to understand the > process. You might even be able to take some code form it and make > something along the lines of a One Pendrive for all x86 based computers > (well... realistically only 586+ as cmov is not supported in any modern > Ubuntu kernels and neither is non-PAE) > > > > On 06/24/2015 11:34 AM, Andre Campos Rodovalho wrote: > > > I'm thinking about the casper-rw partition. Could it be used for the iso > > files in a convenient way? Maybe - and it is better to have few > > partitions, when the drive is small. > > Unfortunately I don't know much about casper-rw. I think using it with an > regular ISO might not be easy. I have no idea how these partitions are > mounted... Maybe is a custom configuration made by startup disk creator!? > > I made a usb bootable device with startup disk creator and persistence a > long time ago. I noticed the content of iso was extracted to the drive, and > the persistence was made with a file... > > 2015-06-24 12:28 GMT-03:00 Nio Wiklund <[email protected]>: > >> Hi Andre, >> >> Nice to see you here again. I notice that your tutorial thread at the >> Ubuntu Forums is attracting many readers :-) >> >> Yes I know there are advantages with ext partitions and how to tweak >> them for optimal performance and lifetime on a pendrive, but I didn't >> want to make the setup too complicated. You may be right, that there are >> enough advantages with ext filesystems, so that I should store the >> isofiles there (and have only a small fat32 partition to allow for UEFI >> booting). >> >> Anyway, pendrives are often slow, and I have found that rsync behaves >> much better than zsync, when the target drive for updating is a >> pendrive. I think this is true also with ext filesystems. >> >> One big advantage is that there is no need for copying/cloning/flashing >> from the internal drive to the pendrive. The slowness of the internet >> connection matches quite well the slowness of a USB 2 connection, so you >> don't lose much time anyway. >> >> Fragmentation is another reason to avoid fat 32. I guess I have to watch >> out for that, but as long as the iso files remain about the same size >> and the file system is far from full, that should be a small problem in >> this case. >> >> I'm thinking about the casper-rw partition. Could it be used for the iso >> files in a convenient way? Maybe - and it is better to have few >> partitions, when the drive is small. >> >> Best regards >> Nio >> >> >> Den 2015-06-24 14:35, Andre Campos Rodovalho skrev: >> > Hey Nio, you can use ext4 partition and grub2 for a BIOS boot. (This >> > might allow you to zsync, for testing..) >> > >> > Another option might be to create a first "boot" partition with >> > GPT+FAT32, but set up GRUB2 to load images in a second ext4 partition, >> > (where the ISO files will be stored). >> > >> > I know this should work, but I had no time to test it out yet... >> > >> > Cheers! >> > >> > >> > 2015-06-19 15:43 GMT-03:00 Nio Wiklund <[email protected] >> > <mailto:[email protected]>>: >> > >> > Hi again :-) >> > >> > There is one minor edit: >> > >> > I wrote 'You can even zsync the Lubuntu daily iso file directly >> into the >> > pendrive for iso-testing.' That was to promise too much. I tried, >> and >> > found that zsync is slow with a slow drive and uses some features >> of an >> > ext file system while we are using fat32. It is better to use >> *rsync* >> > (which is also an alternative in the instructions for iso-testing. I >> > made this script for 'wily-desktop-i386.iso', >> > >> > -------------------------------------------------------------- >> > echo "***** get/update iso file with rsync:" >> > rsync -tzhhP >> > rsync:// >> cdimage.ubuntu.com/cdimage/lubuntu/daily-live/current/wily-desktop-i386.iso >> > < >> http://cdimage.ubuntu.com/cdimage/lubuntu/daily-live/current/wily-desktop-i386.iso >> > >> > . >> > >> > echo " >> > ***** check md5sum:" >> > wget -O md5sums >> > http://cdimage.ubuntu.com/lubuntu/daily-live/current/MD5SUMS >> > grep wily-desktop-i386.iso md5sums>md5sum-desktop >> > md5sum -c md5sum-desktop >> > -------------------------------------------------------------- >> > >> > You need space for two versions of the iso file (plus a little extra >> > margin). The old one is not wiped until the new one is complete. >> > >> > Best regards >> > Nio >> > >> >> > > > > > -- > Regards > > > -- > Lubuntu-users mailing list > [email protected] > Modify settings or unsubscribe at: > https://lists.ubuntu.com/mailman/listinfo/lubuntu-users > >
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