Eric Shubert wrote:
> Dazed_75 wrote:
>> Saturday I was helping Matthew create a Live Ubuntu USB stick. We
>> succeeded but for some reason persistence was not working and I could
>> not figure out why. I did the same thing here at home and persistence
>> works fine. In fact, I think I know the answer now. Mathew was using a
>> 16 GB flash drive and wanted the rest of the drive used for persistent
>> storage.
>>
>> The problem was, I believe, that the flash drive was formatted for FAT32
>> which has a file size limit of 4GB. It appears the utility to create
>> the LiveUSB ubuntu stick creates a special file to use for the "overlay"
>> (my term) file system that is merged onto the read only filesystem from
>> the Live image. Since we were asking it to make a 14.4GB overlay file
>> on a FAT32 partition, that part of the install failed silently and
>> persistence was was working.
>>
>> Mathew, I believe there are several ways to resolve this with the
>> simplest being to only ask for 4GB of persistent storage. The rest of
>> the stick should still be usable though you may find it handy to make
>> the rest a separate partition and mount it within the LiveUSB Ubuntu.
>> You should even be able to make the mount persistent.
>>
>> --
>> Dazed_75 a.k.a. Larry
>>
>
> That sounds like a possibility all right. TTBOMK though, FAT32 has a 2G
> file size limit. :(
>
Now that I think of it though, are we confusing partition vs file sizes?
The 'overlay' partition would be what's over 2G, not a file. From what
I've seen of overlay filesystems, there are still going to be
independent files within the partition. It's not just one big file. As
such, I doubt this is the problem. As always, I could be wrong. I think
I was on that last post (except for the 2G part!).
--
-Eric 'shubes'
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