-[1] Please notice that lenny and squeeze are unsupported releases within Debian nowadays.
-grml-debootstrap can handle the releases but you really should not use them
-anymore unless you really know what you are doing. Choose the current Debian
-stable version instead.
-
-Notice that you need to specify a mirror providing the lenny/squeeze releases, the
-default (http://httpredir.debian.org/debian) doesn't provide it any longer nowadays.
-Set the mirror to e.g. http://archive.debian.org/debian/ if you don't have
-your own lenny/squeeze mirror.
-
-You also need to specify a filesystem that's supported by lenny, e.g.
-'--filesystem ext3' since grml-debootstrap's current default (ext4) isn't
-supported by lenny.
-
-Also when debootstrapping lenny on a live system with a kernel version
-like "3.16-1-grml-amd64" lenny's libc will fail to install with:
-
- [...]
- /var/lib/dpkg/tmp.ci/preinst: line 265: [: 3.16-1-grml-amd64: integery expression expected
- /var/lib/dpkg/tmp.ci/preinst: line 231: 3.16-1-grml-amd64: syntax error: invalid arithemtic operator (error token is ".16-1-grml-amd64")
- dpkg: error processing /var/cache/apt/archives/libc6_2.7-18lenny7_amd64.deb (--install):
- [....]
-
-To workaround this either debootstrap from a system with an according
-kernel version or use the "fake uname" workaround (just google for it).
-
-When installing lenny to a new mdraid, grml-debootstrap will use md metadata
-format version 0.90. This limits the device to a maximum size of 2TB, but has
-the advantage of grub-legacy actually being able to boot from it.
+[1] Please notice that releases like jessie, stretch and buster are unsupported releases within Debian nowadays.
+grml-debootstrap can handle the releases but you really should not use them anymore unless you really know what you are doing.
+Even older versions are also entirely unsupported by grml-debootstrap.
+
+Choose the current Debian stable version instead.
+See https://wiki.debian.org/DebianReleases for the list of supported releases.
+
+Notice that you need to specify a specific mirror providing old releases, the default (http://deb.debian.org/debian) doesn't provide them any longer.
+Set the mirror to e.g. http://archive.debian.org/debian/ if you don't have your own Debian mirror.
+
+Older releases might also fail to install when running on top of recent kernel versions,
+throwing segfaults during debootstrap. This can be identified by the following messages inside kernel log (check with 'dmesg'):
+
+ dpkg[...] vsyscall attempted with vsyscall=none ip:[...]
+ dpkg[...]: segfault at [...]
+
+To work around this issue boot your system with the kernel boot option 'vsyscall=emulate'.