>>513
試しました。
コマンドにadb pull /sdcard C:\N5を打って、その後にネクサスを「apply〜ADB」モードにしてUSB差しましたが
E:failed to mount /cache(Invalid argument)
E:failed to mount /cache(Invalid argument)
E:failed to mount /cache(Invalid argument)
E:cant mount /cache/recovery/log
E:cant open /cache/recovery/log
E:failed to mount /cache(Invalid argument)
E:cant mount /cache/recovery/last_log
E:cant open /cache/recovery/last_log
E:failed to mount /cache(Invalid argument)
E:cant mount /cache/recovery/last_insetll
E:cant open /cache/recovery/last_insetll
E:failed to mount /cache(Invalid argument)
E:cant mount /cache/recovery/log
E:cant open /cache/recovery/log
E:failed to mount /cache(Invalid argument)
E:cant mount /cache/recovery/last_log
E:cant open /cache/recovery/last_log
E:failed to mount /cache(Invalid argument)
E:cant mount /cache/recovery/last_insetll
E:cant open /cache/recovery/last_insetll
E:failed to mount /cache(Invalid argument)

とスマホに出てしまいました。
Minimal ADB and Fastbootの画面には
Microsoft Windows [Version 6.3.9600]
(c) 2013 Microsoft Corporation. All rights reserved.

C:\Program Files (x86)\Minimal ADB and Fastboot>adb pull /sdcard C:\N5
adb: error: connect failed: closed

C:\Program Files (x86)\Minimal ADB and Fastboot>

と出た状況になっております。このままの状態で現在何もせずに放置してます、。