windows 10 linux 双系统 ach

1. Check your system’s current boot mode

First, while in windows 10 linux 双系统 ach, press Win + R, type msinfo32, and press Enter. In the System Information panel look for the “BIOS Mode” entry.

• If it says UEFI, your Windows is installed in UEFI/GPT mode.

• If it says Legacy or BIOS, your Windows is in BIOS/MBR mode.You must install Arch Linux using the same mode as Windows. If you mix UEFI and BIOS modes on the same disk you’ll run into bootloader issues.
  Also check that your disk partition style matches the mode (GPT for UEFI, MBR for BIOS). Windows enforces this.

2. Prepare Windows for sharing with Linux

Here’s what you should do before installing Arch Linux:

• Open Disk Management in Windows (diskmgmt.msc). Shrink your main Windows partition (usually C:) to free up space for Arch Linux. For example, leave free/unallocated maybe 20-50 GB or more depending on what you plan to install.
• Disable Fast Startup (Windows Feature) and Hibernate if possible. Fast Startup can cause issues with shared partitions and dual-boot setups.
• If you have any BitLocker encryption enabled, be sure to back up recovery keys.
• Back up all your important data. Because you’ll be partitioning drives and installing a second OS, things can go wrong.

3. Create a bootable USB and adjust firmware settings

• Download the latest Arch Linux ISO from the official site.
• Use a tool like Rufus (on Windows) to create a bootable USB with the Arch ISO. Make sure you select the correct partition scheme that matches your system (e.g., GPT for UEFI, MBR for BIOS).
• Reboot your machine and enter your BIOS/UEFI settings (typically by pressing F2, Del, or another key during startup).

  • Disable Secure Boot if your system has it enabled (Arch’s installer media doesn’t support Secure Boot by default).

  • Set boot priority so that your USB is first in the boot order, so you can boot from it.

4. Install Arch Linux alongside Windows

Once you boot from the USB into the Arch live environment, follow these basics:

• Connect to the Internet if needed (for WiFi, using iwctl or another tool).
• Use lsblk or fdisk -l to identify your disk and partitions. Be careful not to overwrite your Windows partitions.
• Create partitions for Arch Linux: at minimum you’ll need a root (-/) partition and optionally swap. If you’re using UEFI you’ll also need an EFI System Partition (ESP) if one doesn’t already exist. Often you can reuse the existing ESP used by Windows instead of creating a new one.
• Format the new partitions (for example root as ext4) and mount them appropriately.
• Install the base Arch system (using pacstrap or an installer script) and then configure it (e.g., set timezone, locale, root password, hostname).
• Install a bootloader such as grub (if BIOS) or grub/systemd-boot (if UEFI). Ensure it is installed to the correct disk and that Windows is added to the boot menu. Many users enable the os-prober tool so GRUB also automatically lists Windows.

5. Post-installation: make dual-boot smooth

• After installation, update your bootloader configuration so both Windows and Arch appear in the menu on startup.
• Reboot and test that selecting Arch boots you into Linux, and selecting Windows boots Windows.
• If Windows behaves oddly (e.g., overwrote bootloader, or Arch doesn’t show in menu), you may need to use firmware settings or efibootmgr (on UEFI) to manage boot entries.
• To access your Windows files from Arch, install the ntfs-3g package to enable NTFS read/write support (if you left Windows partitions accessible).

6. Troubleshooting & tips

• Always make sure both OS installations use the same boot mode (UEFI vs BIOS) and same partition table type. Mismatches will often prevent one OS from booting.
• If you have two separate drives (one for Windows, one for Linux), you can isolate them and reduce risk of one OS messing with the other. Some users recommend this for simpler management
• After major Windows updates, Windows might override the EFI boot order and make Windows first, hiding Linux. If that happens, you may need to go into firmware settings and set the Linux bootloader as first again.
• Use the official guide on the Arch Linux Wiki titled Dual boot with Windows for the most reliable, up-to-date instructions.

Using this process, you’ll achieve a working windows 10 linux 双系统 ach setup: two operating systems, on one machine, each usable when you need it. Be patient and systematic, double-check each step, and you’ll gain the flexibility of both Windows and Arch Linux in one workflow.