30% is "much of" 50% :) Also, looking way way back at http://andblogs.net/fastboot/: *userdata*: 76 megs, Holds all the user applications and data. Reset the phone to factory by erasing it. (Sometimes referred to as ‘data’) *cache*: 70 megs, supposed to be temporary storage (/cache) but actually never used except by T-mobile OTA updates.
So as far as the user is concerned, it is half of the available storage. (And yah, if that page still mattered I'd update it to reflect the fact that newer OS loads did more with it.) To properly rephrase: Literally 1/3 of the onboard flash was reserved purely for OTAs, although later OS versions used it as scratch space for downloads and such. (Nearly the same amount as was available to the user to begin with.) On Fri, Oct 1, 2010 at 2:40 PM, Dianne Hackborn <[email protected]> wrote: > On Fri, Oct 1, 2010 at 6:08 AM, Disconnect <[email protected]>wrote: > >> Just FYI, if you think back to the g1, OTA updates have been a part of >> android since the very first device. (In fact, if it hadn't been a >> requirement, the g1's crippling storage problems wouldn't be nearly as bad. >> Literally half of the flash is unavailable, much of it to facilitate OTA >> updating.) >> > > 30% of the storage is used by the cache partition. The cache partition is > also used for other things such as downloading media and apps. (It is the > main storage for the download manager that is visible in the browser, which > performs downloads and manages the storage to expunge old downloads as it > becomes full. Though the UI is in the browser, it is a separate facility > and also used for example by Market to download apps.) > > -- > Dianne Hackborn > Android framework engineer > [email protected] > > Note: please don't send private questions to me, as I don't have time to > provide private support, and so won't reply to such e-mails. All such > questions should be posted on public forums, where I and others can see and > answer them. > > > -- > You received this message because you are subscribed to the Google Groups > "Android Security Discussions" group. > To post to this group, send email to > [email protected]. > To unsubscribe from this group, send email to > [email protected]<android-security-discuss%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/android-security-discuss?hl=en. > -- You received this message because you are subscribed to the Google Groups "Android Security Discussions" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/android-security-discuss?hl=en.
