On Sat 05 Jan 2019 at 03:01:49 (+0000), Long Wind wrote: > i'm waiting jessie installer to download kernel from security.debian.org, > file size is 34.1M, it may take more than 2 hours > jessie installer has just downloaded kernel from a mirror i choose, it's > fast, but security.debian.org is slow > early debian installer allow user to choose whether to install security update > i hope debian developer can read this message
Two things. 1. You can choose whether you want security updates at install time. (There may be a default value unless you use expert mode.) You can comment the security line(s) in /etc/apt/sources.list any time you like. 2. You can ^C out of the upgrade process any time you like. When you decide to repeat it, apt will automatically carry on downloading from where it was with no waste of time/bandwidth. Cheers, David.