如何卸载旧版本Ubuntu?

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HolyTerra
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注册时间: 2018-07-03 17:51
系统: Ubuntu 18.04LTS

如何卸载旧版本Ubuntu?

#1

帖子 HolyTerra » 2018-07-03 18:01

先前电脑上有14.04LTS,今天想换成18.04,在安装时选择了清空硬盘.
安装完成后18.04的使用没有问题,但14.04依然能从GRUB进入,甚至上面的文件都一个不少.
所以请问如何卸载掉先前的14.04?万分感谢.
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qy117121
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Re: 如何卸载旧版本Ubuntu?

#2

帖子 qy117121 » 2018-07-03 18:40

直接格式化掉14.04所在分区,不过之前请确保格式化后18.04仍能进入系统
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无聊可以点一下→ http://u.nu/ubuntu

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poloshiao
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Re: 如何卸载旧版本Ubuntu?

#3

帖子 poloshiao » 2018-07-03 20:09

安装完成后18.04的使用没有问题,但14.04依然能从GRUB进入
把下面指令 複製 貼進終端機 執行
1. sudo cat /boot/grub/grub.cfg | grep menuentry
2. sudo ls -al /dev/disk/by-uuid/*
把指令及結果全部直接 選取/複製/貼上來
HolyTerra
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系统: Ubuntu 18.04LTS

Re: 如何卸载旧版本Ubuntu?

#4

帖子 HolyTerra » 2018-07-04 11:01

poloshiao 写了: 2018-07-03 20:09 把下面指令 複製 貼進終端機 執行
1. sudo cat /boot/grub/grub.cfg | grep menuentry
2. sudo ls -al /dev/disk/by-uuid/*
把指令及結果全部直接 選取/複製/貼上來
反馈的结果如下.

if [ x"${feature_menuentry_id}" = xy ]; then
menuentry_id_option="--id"
menuentry_id_option=""
export menuentry_id_option
menuentry 'Ubuntu' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-e7987e2b-ea78-4ef0-96cd-9c5811d156a6' {
submenu 'Advanced options for Ubuntu' $menuentry_id_option 'gnulinux-advanced-e7987e2b-ea78-4ef0-96cd-9c5811d156a6' {
menuentry 'Ubuntu, with Linux 4.15.0-20-generic' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.15.0-20-generic-advanced-e7987e2b-ea78-4ef0-96cd-9c5811d156a6' {
menuentry 'Ubuntu, with Linux 4.15.0-20-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.15.0-20-generic-recovery-e7987e2b-ea78-4ef0-96cd-9c5811d156a6' {
menuentry 'Ubuntu 14.04.5 LTS (14.04) (on /dev/sda8)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-simple-f293918f-77ad-4fff-b4a3-647719d5a037' {
submenu 'Advanced options for Ubuntu 14.04.5 LTS (14.04) (on /dev/sda8)' $menuentry_id_option 'osprober-gnulinux-advanced-f293918f-77ad-4fff-b4a3-647719d5a037' {
menuentry 'Ubuntu (on /dev/sda8)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/boot/vmlinuz-4.4.0-130-generic.efi.signed--f293918f-77ad-4fff-b4a3-647719d5a037' {
menuentry 'Ubuntu, with Linux 4.4.0-130-generic (on /dev/sda8)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/boot/vmlinuz-4.4.0-130-generic.efi.signed--f293918f-77ad-4fff-b4a3-647719d5a037' {
menuentry 'Ubuntu, with Linux 4.4.0-130-generic (recovery mode) (on /dev/sda8)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/boot/vmlinuz-4.4.0-130-generic.efi.signed-root=UUID=f293918f-77ad-4fff-b4a3-647719d5a037 ro recovery nomodeset-f293918f-77ad-4fff-b4a3-647719d5a037' {
menuentry 'Ubuntu, with Linux 4.4.0-128-generic (on /dev/sda8)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/boot/vmlinuz-4.4.0-128-generic.efi.signed--f293918f-77ad-4fff-b4a3-647719d5a037' {
menuentry 'Ubuntu, with Linux 4.4.0-128-generic (recovery mode) (on /dev/sda8)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/boot/vmlinuz-4.4.0-128-generic.efi.signed-root=UUID=f293918f-77ad-4fff-b4a3-647719d5a037 ro recovery nomodeset-f293918f-77ad-4fff-b4a3-647719d5a037' {
menuentry 'Ubuntu, with Linux 4.4.0-31-generic (on /dev/sda8)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/boot/vmlinuz-4.4.0-31-generic.efi.signed--f293918f-77ad-4fff-b4a3-647719d5a037' {
menuentry 'Ubuntu, with Linux 4.4.0-31-generic (recovery mode) (on /dev/sda8)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/boot/vmlinuz-4.4.0-31-generic.efi.signed-root=UUID=f293918f-77ad-4fff-b4a3-647719d5a037 ro recovery nomodeset-f293918f-77ad-4fff-b4a3-647719d5a037' {
menuentry 'System setup' $menuentry_id_option 'uefi-firmware' {
robomaster@Robomaster:~$ sudo ls -al /dev/disk/by-uuid/*
lrwxrwxrwx 1 root root 10 7月 4 18:50 /dev/disk/by-uuid/2C87000586FFCD78 -> ../../sda1
lrwxrwxrwx 1 root root 10 7月 4 18:50 /dev/disk/by-uuid/569E18EE9E18C87F -> ../../sda2
lrwxrwxrwx 1 root root 10 7月 4 18:50 /dev/disk/by-uuid/8e2f420b-c7bd-483f-972e-b84cdc14c56d -> ../../sda7
lrwxrwxrwx 1 root root 10 7月 4 18:50 /dev/disk/by-uuid/9a2a11cf-ef0f-4639-8093-18cc73bb91b7 -> ../../sda6
lrwxrwxrwx 1 root root 10 7月 4 18:50 /dev/disk/by-uuid/A5DD-9EAA -> ../../sdb1
lrwxrwxrwx 1 root root 10 7月 4 18:50 /dev/disk/by-uuid/c5a8b101-0d8c-4fe1-b529-22b3cf9007d1 -> ../../sda5
lrwxrwxrwx 1 root root 10 7月 4 18:50 /dev/disk/by-uuid/e7987e2b-ea78-4ef0-96cd-9c5811d156a6 -> ../../sdb2
lrwxrwxrwx 1 root root 10 7月 4 18:50 /dev/disk/by-uuid/f293918f-77ad-4fff-b4a3-647719d5a037 -> ../../sda8
poloshiao
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Re: 如何卸载旧版本Ubuntu?

#5

帖子 poloshiao » 2018-07-04 11:31

sudo ls -al /dev/disk/by-uuid/*
...
lrwxrwxrwx 1 root root 10 7月 4 18:50 /dev/disk/by-uuid/e7987e2b-ea78-4ef0-96cd-9c5811d156a6 -> ../../sdb2
lrwxrwxrwx 1 root root 10 7月 4 18:50 /dev/disk/by-uuid/f293918f-77ad-4fff-b4a3-647719d5a037 -> ../../sda8
1. sudo cat /boot/grub/grub.cfg | grep menuentry
menuentry 'Ubuntu' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-e7987e2b-ea78-4ef0-96cd-9c5811d156a6' {
submenu 'Advanced options for Ubuntu' $menuentry_id_option 'gnulinux-advanced-e7987e2b-ea78-4ef0-96cd-9c5811d156a6' {
menuentry 'Ubuntu, with Linux 4.15.0-20-generic' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.15.0-20-generic-advanced-e7987e2b-ea78-4ef0-96cd-9c5811d156a6' {
menuentry 'Ubuntu, with Linux 4.15.0-20-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.15.0-20-generic-recovery-e7987e2b-ea78-4ef0-96cd-9c5811d156a6' {
1. 這些 grub 2 開機選單 選項 屬於 Ubuntu 18.04 其 uuid 是 /dev/sdb2
1. sudo cat /boot/grub/grub.cfg | grep menuentry
menuentry 'Ubuntu 14.04.5 LTS (14.04) (on /dev/sda8)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-simple-f293918f-77ad-4fff-b4a3-647719d5a037' {
submenu 'Advanced options for Ubuntu 14.04.5 LTS (14.04) (on /dev/sda8)' $menuentry_id_option 'osprober-gnulinux-advanced-f293918f-77ad-4fff-b4a3-647719d5a037' {
menuentry 'Ubuntu (on /dev/sda8)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/boot/vmlinuz-4.4.0-130-generic.efi.signed--f293918f-77ad-4fff-b4a3-647719d5a037' {
menuentry 'Ubuntu, with Linux 4.4.0-130-generic (on /dev/sda8)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/boot/vmlinuz-4.4.0-130-generic.efi.signed--f293918f-77ad-4fff-b4a3-647719d5a037' {
menuentry 'Ubuntu, with Linux 4.4.0-130-generic (recovery mode) (on /dev/sda8)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/boot/vmlinuz-4.4.0-130-generic.efi.signed-root=UUID=f293918f-77ad-4fff-b4a3-647719d5a037 ro recovery nomodeset-f293918f-77ad-4fff-b4a3-647719d5a037' {
menuentry 'Ubuntu, with Linux 4.4.0-128-generic (on /dev/sda8)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/boot/vmlinuz-4.4.0-128-generic.efi.signed--f293918f-77ad-4fff-b4a3-647719d5a037' {
menuentry 'Ubuntu, with Linux 4.4.0-128-generic (recovery mode) (on /dev/sda8)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/boot/vmlinuz-4.4.0-128-generic.efi.signed-root=UUID=f293918f-77ad-4fff-b4a3-647719d5a037 ro recovery nomodeset-f293918f-77ad-4fff-b4a3-647719d5a037' {
menuentry 'Ubuntu, with Linux 4.4.0-31-generic (on /dev/sda8)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/boot/vmlinuz-4.4.0-31-generic.efi.signed--f293918f-77ad-4fff-b4a3-647719d5a037' {
menuentry 'Ubuntu, with Linux 4.4.0-31-generic (recovery mode) (on /dev/sda8)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/boot/vmlinuz-4.4.0-31-generic.efi.signed-root=UUID=f293918f-77ad-4fff-b4a3-647719d5a037 ro recovery nomodeset-f293918f-77ad-4fff-b4a3-647719d5a037' {
menuentry 'System setup' $menuentry_id_option 'uefi-firmware' {
2. 這些 grub 2 開機選單 選項 屬於 Ubuntu 14.04 其 uuid 是 /dev/sda8

3. 意思是 你安裝 Ubuntu 18.04 時 並沒有 抹除 Ubuntu 14.04 目前 兩者並存

4. 建議
如果沒有什麼影響 暫時讓兩者並存 並沒有什麼壞處

5. 如果你想完全移除 Ubuntu 14.04 還需要一些資料
HolyTerra
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注册时间: 2018-07-03 17:51
系统: Ubuntu 18.04LTS

Re: 如何卸载旧版本Ubuntu?

#6

帖子 HolyTerra » 2018-07-04 12:10

poloshiao 写了: 2018-07-04 11:31
2. 這些 grub 2 開機選單 選項 屬於 Ubuntu 14.04 其 uuid 是 /dev/sda8

3. 意思是 你安裝 Ubuntu 18.04 時 並沒有 抹除 Ubuntu 14.04 目前 兩者並存

4. 建議
如果沒有什麼影響 暫時讓兩者並存 並沒有什麼壞處

5. 如果你想完全移除 Ubuntu 14.04 還需要一些資料
明白,万分感谢!
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Re: 如何卸载旧版本Ubuntu?

#7

帖子 TeliuTe » 2018-07-04 14:13

把14.04里面的重要数据备份出来,然后正常安装,在分区那一步选其他自定义,把原来的14.04分区格式化,覆盖安装
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