Re: Android and the 64 billion bytes question.
On 10/10/2013 8:50 AM, Ira Abramov wrote: I also thought splitting the card into two 32G partitions could save me from loosing more than one partition at once, if anything bad happens. Unless it is a software error, it is unlikely that if one partition goes on the card, the other will survive. Remember that memory cards are not like disk drives. Data is not stored sequentially, but randomly and the hardware keeps track of the location of it. This is so that sectors that are often written such as the FAT (or the equivalent in that particular file system) do not die quickly from being written to too often. Geoff. -- Geoffrey S. Mendelson 4X1GM/N3OWJ Jerusalem Israel. ___ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
Re: Android and the 64 billion bytes question.
On Thu, Oct 10, 2013 at 9:35 AM, geoffrey mendelson geoffreymendel...@gmail.com wrote: On 10/10/2013 8:50 AM, Ira Abramov wrote: I also thought splitting the card into two 32G partitions could save me from loosing more than one partition at once, if anything bad happens. Unless it is a software error, it is unlikely that if one partition goes on the card, the other will survive. Remember that memory cards are not like disk drives. Data is not stored sequentially, but randomly and the hardware keeps track of the location of it. This is so that sectors that are often written such as the FAT (or the equivalent in that particular file system) do not die quickly from being written to too often. Unless the part of the media that got broke happens to be on your current location of the File Allocation Table... if memory serves me right, there's no multiple copies of the superblock-ext-equivalent in FAT... Flashback from the past: Problems in sector 0 on floppies :) -- Shimi ___ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
Re: Android and the 64 billion bytes question.
On 10/10/2013 9:48 AM, shimi wrote: Flashback from the past: Problems in sector 0 on floppies :) I guess Peter Norton isn't Jewish. Or as a less obscure reference, the Norton Utilities to read the SECOND FAT did not make it to Israel. Like a backup superblock, DOS has a backup FAT. Geoff. -- Geoffrey S. Mendelson 4X1GM/N3OWJ Jerusalem Israel. ___ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
Re: Android and the 64 billion bytes question.
On Thu, Oct 10, 2013 at 9:54 AM, geoffrey mendelson geoffreymendel...@gmail.com wrote: On 10/10/2013 9:48 AM, shimi wrote: Flashback from the past: Problems in sector 0 on floppies :) I guess Peter Norton isn't Jewish. Or as a less obscure reference, the Norton Utilities to read the SECOND FAT did not make it to Israel. Like a backup superblock, DOS has a backup FAT. I stand corrected then. Does make me wonder how so much important stuff got lost over the years if there are two copies (maybe they're at the same disk area, and thus, was a lousy backup to begin with?) when only sector 0 got bad (probably due to multiple writes on the same area...) Still, I would prefer two partitions if switching between them is rather easy. Personally I would probably instead buy two 32GB cards which is less putting all your eggs in one basket, but that's not what the OP wants, it seems :) ___ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
Android and the 64 billion bytes question.
Now do you format a 64GB SDXC card to use with Android? the opinions on the web are all over the place. some say it's OK to keep ExFat (it came formatted) since it's pretty stable in FUSE and the Cyanogenmod supports it. others say one should partition it down to two 32GB parts of Fat32 for compatibility with older OS in case you need to reset (also I found my version of CWM does not read ExFAT). Others say ext2 is the way to go, or ext3 (Windows machines won't support that easily, but I don't care since I don't run one). Basically it's a question of what FS is the most convenient, stable, safe and speed-optimized for flash. The forums people argue but I feel none of them have serious ways to back up their opinions. If you have any facts or educated opinions, I'd be happy to learn. -- World class chipmunk Ira Abramov http://ira.abramov.org/email/ ___ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
Re: Android and the 64 billion bytes question.
Hi, The ExFAT was invented by Microsoft specifically for such a removable storage and support for flash cards with this sizes (it supports up to 64 ZB). Its fully supported under Android (Samsung wrote the kernel module, so there's a native support for it), and you can grab the kernel module from here: https://github.com/dorimanx/exfat-nofuse You can use ext3/ext4 (ext2 is a dog slow on SD) but then you'll have the overhead of journaling, and you won't have any compatibility with any Windows/Mac, in case you want to stick your card into such systems. תודה, *חץ בן חמו* *חץ ביז http://www.hetz.biz*- שרותי פרילאנס לניהול ותחזוקת שרתי Linux ופתרונות וירטואליזציה. טלפון: 054-5297156 אתם מוזמנים לבקר אותנו בבלוג היעוץ שלנו http://vps-consulting.info [image: גם אתר זה מתארח ב-חץ ביז שרתי VPS] * * 2013/10/9 Ira Abramov lists-linux...@ira.abramov.org Now do you format a 64GB SDXC card to use with Android? the opinions on the web are all over the place. some say it's OK to keep ExFat (it came formatted) since it's pretty stable in FUSE and the Cyanogenmod supports it. others say one should partition it down to two 32GB parts of Fat32 for compatibility with older OS in case you need to reset (also I found my version of CWM does not read ExFAT). Others say ext2 is the way to go, or ext3 (Windows machines won't support that easily, but I don't care since I don't run one). Basically it's a question of what FS is the most convenient, stable, safe and speed-optimized for flash. The forums people argue but I feel none of them have serious ways to back up their opinions. If you have any facts or educated opinions, I'd be happy to learn. -- World class chipmunk Ira Abramov http://ira.abramov.org/email/ ___ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il ___ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
Re: Android and the 64 billion bytes question.
Weren't there any patent issues with exFAT? Udi On Thu, Oct 10, 2013 at 2:09 AM, Hetz Ben Hamo h...@hetz.biz wrote: Hi, The ExFAT was invented by Microsoft specifically for such a removable storage and support for flash cards with this sizes (it supports up to 64 ZB). Its fully supported under Android (Samsung wrote the kernel module, so there's a native support for it), and you can grab the kernel module from here: https://github.com/dorimanx/exfat-nofuse You can use ext3/ext4 (ext2 is a dog slow on SD) but then you'll have the overhead of journaling, and you won't have any compatibility with any Windows/Mac, in case you want to stick your card into such systems. תודה, *חץ בן חמו* *חץ ביז http://www.hetz.biz*- שרותי פרילאנס לניהול ותחזוקת שרתי Linux ופתרונות וירטואליזציה. טלפון: 054-5297156 אתם מוזמנים לבקר אותנו בבלוג היעוץ שלנו http://vps-consulting.info [image: גם אתר זה מתארח ב-חץ ביז שרתי VPS] * * 2013/10/9 Ira Abramov lists-linux...@ira.abramov.org Now do you format a 64GB SDXC card to use with Android? the opinions on the web are all over the place. some say it's OK to keep ExFat (it came formatted) since it's pretty stable in FUSE and the Cyanogenmod supports it. others say one should partition it down to two 32GB parts of Fat32 for compatibility with older OS in case you need to reset (also I found my version of CWM does not read ExFAT). Others say ext2 is the way to go, or ext3 (Windows machines won't support that easily, but I don't care since I don't run one). Basically it's a question of what FS is the most convenient, stable, safe and speed-optimized for flash. The forums people argue but I feel none of them have serious ways to back up their opinions. If you have any facts or educated opinions, I'd be happy to learn. -- World class chipmunk Ira Abramov http://ira.abramov.org/email/ ___ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il ___ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il ___ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
Re: Android and the 64 billion bytes question.
Yes, there is, but just like with FAT, FAT32, NTFS, SMB etc - you won't see Microsoft chasing Ubuntu, CentOS or Red Hat for royalties. MS is asking royalties from the hardware vendors, not from you or your favorite distribution. BTW: Both Fedora and Ubuntu already support exfat. תודה, *חץ בן חמו* *חץ ביז http://www.hetz.biz*- שרותי פרילאנס לניהול ותחזוקת שרתי Linux ופתרונות וירטואליזציה. טלפון: 054-5297156 אתם מוזמנים לבקר אותנו בבלוג היעוץ שלנו http://vps-consulting.info [image: גם אתר זה מתארח ב-חץ ביז שרתי VPS] * * 2013/10/10 Udi Finkelstein linux...@udif.com Weren't there any patent issues with exFAT? Udi On Thu, Oct 10, 2013 at 2:09 AM, Hetz Ben Hamo h...@hetz.biz wrote: Hi, The ExFAT was invented by Microsoft specifically for such a removable storage and support for flash cards with this sizes (it supports up to 64 ZB). Its fully supported under Android (Samsung wrote the kernel module, so there's a native support for it), and you can grab the kernel module from here: https://github.com/dorimanx/exfat-nofuse You can use ext3/ext4 (ext2 is a dog slow on SD) but then you'll have the overhead of journaling, and you won't have any compatibility with any Windows/Mac, in case you want to stick your card into such systems. תודה, *חץ בן חמו* *חץ ביז http://www.hetz.biz*- שרותי פרילאנס לניהול ותחזוקת שרתי Linux ופתרונות וירטואליזציה. טלפון: 054-5297156 אתם מוזמנים לבקר אותנו בבלוג היעוץ שלנו http://vps-consulting.info [image: גם אתר זה מתארח ב-חץ ביז שרתי VPS] * * 2013/10/9 Ira Abramov lists-linux...@ira.abramov.org Now do you format a 64GB SDXC card to use with Android? the opinions on the web are all over the place. some say it's OK to keep ExFat (it came formatted) since it's pretty stable in FUSE and the Cyanogenmod supports it. others say one should partition it down to two 32GB parts of Fat32 for compatibility with older OS in case you need to reset (also I found my version of CWM does not read ExFAT). Others say ext2 is the way to go, or ext3 (Windows machines won't support that easily, but I don't care since I don't run one). Basically it's a question of what FS is the most convenient, stable, safe and speed-optimized for flash. The forums people argue but I feel none of them have serious ways to back up their opinions. If you have any facts or educated opinions, I'd be happy to learn. -- World class chipmunk Ira Abramov http://ira.abramov.org/email/ ___ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il ___ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il ___ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il ___ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
Re: Android and the 64 billion bytes question.
Like I said, ExFAT is not an issue with my desktop, only with my CWM recovery. it seems CyanogenMod have a CWM fused into their kernel, so if I try to install a newer CWM or TWRP, I still get the older CWM that won't support ExFAT. I also thought splitting the card into two 32G partitions could save me from loosing more than one partition at once, if anything bad happens. Quoting Hetz Ben Hamo, from the post of Thu, 10 Oct: Yes, there is, but just like with FAT, FAT32, NTFS, SMB etc - you won't see Microsoft chasing Ubuntu, CentOS or Red Hat for royalties. MS is asking royalties from the hardware vendors, not from you or your favorite distribution. BTW: Both Fedora and Ubuntu already support exfat. תודה, *חץ בן חמו* *חץ ביז http://www.hetz.biz*- שרותי פרילאנס לניהול ותחזוקת שרתי Linux ופתרונות וירטואליזציה. טלפון: 054-5297156 אתם מוזמנים לבקר אותנו בבלוג היעוץ שלנו http://vps-consulting.info [image: גם אתר זה מתארח ב-חץ ביז שרתי VPS] * * 2013/10/10 Udi Finkelstein linux...@udif.com Weren't there any patent issues with exFAT? Udi On Thu, Oct 10, 2013 at 2:09 AM, Hetz Ben Hamo h...@hetz.biz wrote: Hi, The ExFAT was invented by Microsoft specifically for such a removable storage and support for flash cards with this sizes (it supports up to 64 ZB). Its fully supported under Android (Samsung wrote the kernel module, so there's a native support for it), and you can grab the kernel module from here: https://github.com/dorimanx/exfat-nofuse You can use ext3/ext4 (ext2 is a dog slow on SD) but then you'll have the overhead of journaling, and you won't have any compatibility with any Windows/Mac, in case you want to stick your card into such systems. תודה, *חץ בן חמו* *חץ ביז http://www.hetz.biz*- שרותי פרילאנס לניהול ותחזוקת שרתי Linux ופתרונות וירטואליזציה. טלפון: 054-5297156 אתם מוזמנים לבקר אותנו בבלוג היעוץ שלנו http://vps-consulting.info [image: גם אתר זה מתארח ב-חץ ביז שרתי VPS] * * 2013/10/9 Ira Abramov lists-linux...@ira.abramov.org Now do you format a 64GB SDXC card to use with Android? the opinions on the web are all over the place. some say it's OK to keep ExFat (it came formatted) since it's pretty stable in FUSE and the Cyanogenmod supports it. others say one should partition it down to two 32GB parts of Fat32 for compatibility with older OS in case you need to reset (also I found my version of CWM does not read ExFAT). Others say ext2 is the way to go, or ext3 (Windows machines won't support that easily, but I don't care since I don't run one). Basically it's a question of what FS is the most convenient, stable, safe and speed-optimized for flash. The forums people argue but I feel none of them have serious ways to back up their opinions. If you have any facts or educated opinions, I'd be happy to learn. -- World class chipmunk Ira Abramov http://ira.abramov.org/email/ ___ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il ___ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il ___ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il ___ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il -- Straight from the hourse's mouth Ira Abramov http://ira.abramov.org/email/ ___ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
