我已将笔记本电脑中的 HDD（WDC WD10JPVX-75JC3T0）换成了 SSD（WDS500G2B0A），发现加载速度相同（没有我预期的快）。
为什么？
我复制了分区 1:1，是否还需要更改一些设置？
我所说的“速度”是指冷启动时间。
以下是部分dmesg输出：
[ 9.107913] EXT4-fs (sda5): mounted filesystem with ordered data mode. Opts: (null)
[ 9.197366] audit: type=1400 audit(1538597657.730:2): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/snap/core/4917/usr/lib/snapd/snap-confine" pid=845 comm="apparmor_parser"
[ 9.197377] audit: type=1400 audit(1538597657.730:3): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/snap/core/4917/usr/lib/snapd/snap-confine//mount-namespace-capture-helper" p
id=845 comm="apparmor_parser"
[ 9.198964] audit: type=1400 audit(1538597657.730:4): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/sbin/dhclient" pid=844 comm="apparmor_parser"
[ 9.198974] audit: type=1400 audit(1538597657.730:5): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=844 comm="apparmor_parser"
[ 9.198980] audit: type=1400 audit(1538597657.730:6): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/NetworkManager/nm-dhcp-helper" pid=844 comm="apparmor_parser"
[ 9.198987] audit: type=1400 audit(1538597657.730:7): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/connman/scripts/dhclient-script" pid=844 comm="apparmor_parser"
[ 9.201702] audit: type=1400 audit(1538597657.734:8): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/lightdm/lightdm-guest-session" pid=843 comm="apparmor_parser"
[ 9.201712] audit: type=1400 audit(1538597657.734:9): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/lightdm/lightdm-guest-session//chromium" pid=843 comm="apparmor_pars
er"
[ 9.204268] audit: type=1400 audit(1538597657.734:10): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/snapd/snap-confine" pid=853 comm="apparmor_parser"
[ 9.204279] audit: type=1400 audit(1538597657.734:11): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/snapd/snap-confine//mount-namespace-capture-helper" pid=853 comm="a
pparmor_parser"
[ 97.452870] bbswitch: version 0.8
[ 97.452876] bbswitch: Found integrated VGA device 0000:00:02.0: \_SB_.PCI0.GFX0
如你所见，它在 90 秒内什么也没做。它做了什么？