为提升您的使用体验,本站正在维护,部分功能暂时无法使用。如果本站文章无法解决您的问题,您想要向社区提问的话,请到 Twitter 上的 @FirefoxSupport 或 Reddit 上的 /r/firefox 提问,我们的支持社区将会很快回复您的疑问。

搜索 | 用户支持

防范以用户支持为名的诈骗。我们绝对不会要求您拨打电话或发送短信,及提供任何个人信息。请使用“举报滥用”选项报告涉及违规的行为。

详细了解

password recovery from old hard drive

  • 1 个回答
  • 1 人有此问题
  • 14 次查看
  • 最后回复者为 cor-el

more options

I had a laptop die on me suddenly without knowing about Firefox sync, the laptops hard drive still worked but I didn't have a way to access it for about 10 months until now. on a new laptop I have set up a new Firefox profile and either set up new passwords or or opened new accounts on some of the websites but a lot of old logins and browsing data, and bookmarks. now that I can access the old profile on the old hard drive I was trying to see if I could just recover missing passwords or data from the old to new profile but on the support website all I can find seems to be how to overwrite the the new profile with the old one which would mean losing a chunk of new passwords and data. it is also unclear whether any new backup or syncs of the new profile would remain or be wiped with the overwrite, is there a way to view the old profiles data to recover parts piecemeal or is the only option to overwrite the new profile. I apologize if this is a lack of computer literacy.

I had a laptop die on me suddenly without knowing about Firefox sync, the laptops hard drive still worked but I didn't have a way to access it for about 10 months until now. on a new laptop I have set up a new Firefox profile and either set up new passwords or or opened new accounts on some of the websites but a lot of old logins and browsing data, and bookmarks. now that I can access the old profile on the old hard drive I was trying to see if I could just recover missing passwords or data from the old to new profile but on the support website all I can find seems to be how to overwrite the the new profile with the old one which would mean losing a chunk of new passwords and data. it is also unclear whether any new backup or syncs of the new profile would remain or be wiped with the overwrite, is there a way to view the old profiles data to recover parts piecemeal or is the only option to overwrite the new profile. I apologize if this is a lack of computer literacy.

所有回复 (1)

more options

You can copy certain files with Firefox closed to the current profile folder to transfer or recover personal data. For the passwords you need logins.json and key4.db. Note that best is to avoid copying a full profile folder.

You can use the button on the "Help -> More Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:profiles page (Root directory).


  • bookmarks and history: places.sqlite
  • favicons: favicons.sqlite
  • bookmark backups: compressed .jsonlz4 JSON backups in the bookmarkbackups folder
  • cookies.sqlite for the Cookies
  • formhistory.sqlite for saved autocomplete Form Data
  • logins.json (encrypted logins;32+) and key4.db (decryption key;58+) for Passwords saved in the Password Manager
    key3.db support ended in 73+; to use key3.db in 58-72, make sure to remove key4.db
  • cert9.db (58+) for (intermediate) certificates stored in the Certificate Manager
  • persdict.dat for words added to the spell checker dictionary
  • permissions.sqlite for Permissions and possibly content-prefs.sqlite for other website specific data (Site Preferences)
  • sessionstore.jsonlz4 for open tabs and pinned tabs (see also the sessionstore-backups folder)