Fix Debian textonly in qemu.

linux/debian-textonly-qemu.txt

@@ -52,13 +52,14 @@
         qemu-nbd -c /dev/nbd0 debian.qcow2
         mount /dev/nbd0p1 /mnt/
 
-    * Disable framebuffer in grub.
+    * Disable framebuffer and enable serial console in grub.
         Edit /mnt/etc/default/grub.
-            GRUB_TERMINAL=console
-            GRUB_TERMINAL_OUTPUT=console
-            GRUB_CMDLINE_LINUX_DEFAULT="quiet nomodeset"
-            GRUB_CMDLINE_LINUX="vga=normal nomodeset"
+            GRUB_TERMINAL="console serial"
+            GRUB_TERMINAL_OUTPUT="console serial"
+            GRUB_CMDLINE_LINUX="vga=normal nomodeset console=tty1 console=ttyS0,115200"
+            GRUB_CMDLINE_LINUX_DEFAULT="quiet nomodeset console=tty1 console=ttyS0,115200"
             GRUB_GFXPAYLOAD_LINUX="text"
+            GRUB_SERIAL_COMMAND="serial --speed=115200 --unit=0 --word=8 --parity=no --stop=1"
 
     * Update grub.
         mount --bind /dev /mnt/dev
@@ -103,10 +104,12 @@
 * Login as root.
 
 * Update grub.
+    grub-mkconfig -o /boot/grub/grub.cfg
     update-grub
 
 * To change the keyboard layout:
     dpkg-reconfigure keyboard-configuration
+    It is convenient to leave it in English.
 
 * Reboot.
     reboot
@@ -119,13 +122,13 @@
     apt-get dist-upgrade
 
 * Install packages.
-    apt-get install aria2 bridge-utils bmon ccrypt \
-        dnsutils elinks ethtool flip fping ftp git \
+    apt-get install aria2 bridge-utils bmon bzip2 ccrypt \
+        dnsutils elinks ethtool file flip fping ftp git \
         hdparm hping3 ifstat iperf3 iperf iptraf \
         joe less locate lsb-release lshw lsof lynx \
         mc mtr netdiag net-tools nload nmap nmon \
         p7zip psutils rar rename rsync screen socat \
-        ssh tcpdump tcptraceroute telnet traceroute \
+        ssh tcpdump tcptraceroute telnet time traceroute \
         tshark uml-utilities unzip vlan wput wipe \
         zip man dstat ifstat nicstat sysstat