Thread: Likebook Alita
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Old 12-05-2019, 10:49 AM   #179
parkher
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Posts: 467
Karma: 369018
Join Date: Nov 2010
Device: BL Alita/Mimas/Ares, OB Note2/Note, KA One/H2O/HD, S PRS T2/T1, PB 902
Quote:
Originally Posted by ottischwenk View Post
Why will you use it as movable, when you will hardly remove it?
Internal it is GPT and Ext4 - it is a secure and fast system.
Movable is formatted as Fat32 - a stupid file system on 512 GB SD card.
Because of the 26 GB to which you dont have access?
Actually, 26 GB is what I have access to, I don't have access to the 512 GB card. Or if I do, it is misleading because of a bug in android.

And why FAT32? Also exFAT.
Yes, if you allow Alita to format the card as portable - it makes it FAT32.
But if I insert an exFAT formatted card into it - it accepts it. No re-formatting is required for the portable storage option.

Samsung 512 GB Evo Plus is sold as exFAT, cluster size: 256K.
Way too huge for small books. But it works in Alita and in Mimas as portable storage without reformatting.
After formatting it as portable in Mimas I got: FAT32, cluster size: 32K.
Not so bad. On average, a loss of 16K per book - wasted on the last cluster of the book. Perhaps acceptable:
About 15 GB wasted on a 512 GB card, for a million books of average size of 500 KB.
Or even less wasted, if an average book size is more, and so less than a million books would fit on the card.

In windows, it is possible to format as exFAT or FAT32 with cluster sizes beginning from 512 bytes, and then 1K, 2K, 4K, 8K, 16K, 32K, etc.
So, I could format the card as exFAT (or as FAT32) with the cluster size of my own choosing and then insert it into Alita.
I am tempted to use smaller clusters than 32 K (the default cluster size for ntfs is 4K, and for general purpose at that, not for tiny books), but perhaps there are pros and cons.

Last edited by parkher; 12-07-2019 at 01:24 AM.
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