我的电脑安装了两个操作系统：Windows XP 和 Ubuntu 10.10。
现在，我想将 Ubuntu 更新到 12.04。我使用 USB 磁盘安装 12.04。但安装程序找不到我的分区。fdisk 能找到它们。我该如何解决这个问题？
ubuntu@ubuntu:~$ sudo lshw -short
H/W path Device Class Description
======================================================
system HP 2230s (NN868PA#AB2)
/0 bus 3037
/0/9 memory 64KiB BIOS
/0/0 processor Intel(R) Core(TM)2 Duo CPU T6570 @ 2.10GHz
/0/0/1 memory 2MiB L2 cache
/0/0/3 memory 32KiB L1 cache
/0/0/0.1 processor Logical CPU
/0/0/0.2 processor Logical CPU
/0/2 memory 32KiB L1 cache
/0/4 memory 2GiB System Memory
/0/4/0 memory SODIMM [empty]
/0/4/1 memory 2GiB SODIMM DDR2 Synchronous 800 MHz (1.2 ns)
/0/100 bridge Mobile 4 Series Chipset Memory Controller Hub
/0/100/2 display Mobile 4 Series Chipset Integrated Graphics Controller
/0/100/2.1 display Mobile 4 Series Chipset Integrated Graphics Controller
/0/100/1a bus 82801I (ICH9 Family) USB UHCI Controller #4
/0/100/1a.1 bus 82801I (ICH9 Family) USB UHCI Controller #5
/0/100/1a.2 bus 82801I (ICH9 Family) USB UHCI Controller #6
/0/100/1a.7 bus 82801I (ICH9 Family) USB2 EHCI Controller #2
/0/100/1b multimedia 82801I (ICH9 Family) HD Audio Controller
/0/100/1c bridge 82801I (ICH9 Family) PCI Express Port 1
/0/100/1c.1 bridge 82801I (ICH9 Family) PCI Express Port 2
/0/100/1c.1/0 wlan1 network PRO/Wireless 5100 AGN [Shiloh] Network Connection
/0/100/1c.2 bridge 82801I (ICH9 Family) PCI Express Port 3
/0/100/1c.4 bridge 82801I (ICH9 Family) PCI Express Port 5
/0/100/1c.5 bridge 82801I (ICH9 Family) PCI Express Port 6
/0/100/1c.5/0 eth1 network 88E8072 PCI-E Gigabit Ethernet Controller
/0/100/1d bus 82801I (ICH9 Family) USB UHCI Controller #1
/0/100/1d.1 bus 82801I (ICH9 Family) USB UHCI Controller #2
/0/100/1d.2 bus 82801I (ICH9 Family) USB UHCI Controller #3
/0/100/1d.7 bus 82801I (ICH9 Family) USB2 EHCI Controller #1
/0/100/1e bridge 82801 Mobile PCI Bridge
/0/100/1f bridge ICH9M LPC Interface Controller
/0/100/1f.2 scsi0 storage 82801IBM/IEM (ICH9M/ICH9M-E) 4 port SATA Controller [AHCI mode]
/0/100/1f.2/0 /dev/sda disk 500GB WDC WD5000BEVT-0
/0/100/1f.2/0/1 /dev/sda1 volume 48GiB Windows NTFS volume
/0/100/1f.2/0/2 /dev/sda2 volume 416GiB Extended partition
/0/100/1f.2/0/2/5 /dev/sda5 volume 97GiB HPFS/NTFS partition
/0/100/1f.2/0/2/6 /dev/sda6 volume 198GiB HPFS/NTFS partition
/0/100/1f.2/0/2/7 /dev/sda7 volume 27GiB Linux filesystem partition
/0/100/1f.2/0/2/8 /dev/sda8 volume 93GiB Linux filesystem partition
/0/100/1f.2/1 /dev/cdrom disk CDDVDW TS-L633M
/0/1 scsi6 storage
/0/1/0.0.0 /dev/sdb disk 15GB STORAGE DEVICE
/0/1/0.0.0/0 /dev/sdb disk 15GB
/0/1/0.0.0/0/1 /dev/sdb1 volume 14GiB Windows FAT volume
/1 power HZ04037
ubuntu@ubuntu:~$
ubuntu@ubuntu:~$ sudo fdisk -l
Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x31263125
Device Boot Start End Blocks Id System
/dev/sda1 * 63 102277727 51138832+ 7 HPFS/NTFS/exFAT
/dev/sda2 102277728 976784129 437253201 f W95 Ext'd (LBA)
/dev/sda5 102277791 307078127 102400168+ 7 HPFS/NTFS/exFAT
/dev/sda6 307078191 724141151 208531480+ 7 HPFS/NTFS/exFAT
/dev/sda7 724142080 781459455 28658688 83 Linux
/dev/sda8 781461504 976771071 97654784 83 Linux
Disk /dev/sdb: 15.9 GB, 15931539456 bytes
64 heads, 32 sectors/track, 15193 cylinders, total 31116288 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0009eb92
Device Boot Start End Blocks Id Systemfile:///home/ubuntu/Pictures/Screenshot%20from%202012-07-07%2010:25:40.png
/dev/sdb1 * 32 31115263 15557616 c W95 FAT32 (LBA)
Ubuntu 12.04 的安装程序无法找到我的硬盘中的分区。它只找到设备 - /dev/sda。
答案1
Pxd，重新启动到你的 Ubuntu 10.10 安装并从命令行运行此命令：
sudo apt-get update && sudo apt-get upgrade
或者，您可以update-manager -d从终端运行并使用 GUI 工具进行升级。
无论选择哪种方式都可以让您升级到下一个最新版本，而不会丢失任何已保存的数据。