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Rockbox mail archiveSubject: Re: Q re ipod 5.5g w/ large disks, was Rockbox 3.7.1 released!Re: Q re ipod 5.5g w/ large disks, was Rockbox 3.7.1 released!
From: Torne Wuff <torne-rockboxusers_at_wolfpuppy.org.uk>
Date: Tue, 21 Dec 2010 21:40:30 +0000 On Tue, Dec 21, 2010 at 09:52:24AM -0700, Nicholas Gerstenberger wrote: > Rockbox does support larger drives but i've found that i need to modify > one line in the _ipodvideo.h_ source file (folder - > firmware\export\config\) before Rockbox would boot up and run correctly > for me: > /#define MAX_PHYS_SECTOR_SIZE *1024*/ > Change *1024* to *4096*. Save and compile as normal. > > I don't know if this MAX is universal for all drives but it worked for > the 120GB drive (a Hitachi HS12YHA) You shouldn't have to do this unless the drive's firmware is broken. The reason that exists in the first place is because the original 80GB drive in the iPod Video is broken, and fails to emulate unaligned sector accesses as is required by the ATA specification. If this is really needed for your drive then this is surprising, but not impossible; Toshiba managed to make a drive that was broken :) What does it actually do when you try using a standard build? 4KB is the largest sector size currently in use by the drive industry; this may change in the future. > Is there any reason NOT to make this setting standard on future builds? > Since this change is strictly with a source file pertaining to the iPod > Video, does making it higher have adverse effects on smaller drives for > the Video? There is; it requires more memory (admittedly, not a great deal). Other players do not have the software emulation feature *at all*, so changing it to a larger value for the Video does not solve the problem for any other player; they will all fail in the same way with that disk. Fixing it for *those* devices would take significantly more memory and have a small performance impact on all drives... the ipod video has just already taken this impact by necessity. At the time I added support for large drives to the standard builds, we were not aware of any drives with broken firmware other than the original 80GB ipod video drive. You are the first person to report a drive having an issue, so I don't think it's worth increasing it at this point. The people on the forums who used to have to increase it don't need to any more, because I improved the emulation code to only operate if the drive actually requires it and no other drives do. -- Torne Wuff torne_at_wolfpuppy.org.uk ------------------------------------------------------------------- Unsubscribe: http://cool.haxx.se/cgi-bin/mailman/listinfo/rockbox FAQ: http://www.rockbox.org/twiki/bin/view/Main/GeneralFAQ Etiquette: http://www.rockbox.org/mail/etiquette.htmlReceived on 2010-12-21 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |