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\begin{table}[ht]
\begin{center}
\begin{tabular}{rl rl rl rl}
\hline
0 & Empty & 40 & Venix 80286 & 94 & Amoeba BBT \\
1 & DOS 12-bit FAT & 51 & Novell? & a5 & BSD/386 \\
2 & XENIX root & 52 & Microport & b7 & BSDI fs \\
3 & XENIX usr & 63 & GNU HURD & b8 & BSDI swap \\
4 & DOS 16-bit $<$32M & 64 & Novell & c7 & Syrinx \\
5 & Extended & 75 & PC/IX & db & CP/M \\
6 & DOS 16-bit $\ge$32M & 80 & Old MINIX & e1 & DOS access \\
7 & OS/2 HPFS & 81 & Linux/MINIX & e3 & DOS R/O \\
8 & AIX & 82 & Linux swap & f2 & DOS secondary \\
9 & AIX bootable & 83 & Linux native & ff & BBT \\
a & OS/2 Boot Manag & 93 & Amoeba & & \\
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\begin{figure}[t]
\begin{center}
\small
\begin{verbatim}dumpe2fs 0.5b, 11-Mar-95 for EXT2 FS 0.5a, 94/10/23
Filesystem magic number: 0xEF53
Filesystem state: clean
Errors behavior: Continue
Inode count: 360
Block count: 1440
Reserved block count: 72
Free blocks: 1133
Free inodes: 326
First block: 1
Block size: 1024
Fragment size: 1024
Blocks per group: 8192
Fragments per group: 8192
Inodes per group: 360
Last mount time: Tue Aug 8 01:52:52 1995
Last write time: Tue Aug 8 01:53:28 1995
Mount count: 3
Maximum mount count: 20
Last checked: Tue Aug 8 01:06:31 1995
Check interval: 0
Reserved blocks uid: 0 (user root)
Reserved blocks gid: 0 (group root)
Group 0:
Block bitmap at 3, Inode bitmap at 4, Inode table at 5
1133 free blocks, 326 free inodes, 2 directories
Free blocks: 307-1439
Free inodes: 35-360\end{verbatim}
\end{center}
\label{fig:dumpe2fs-output}
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\begin{tabular}{r l}
5 MB & root filesystem \\
10 MB & swap partition \\
180 MB & \texttt{/usr}\index{/usr} filesystem \\
120 MB & \texttt{/home}\index{/home} filesystem \\
15 MB & scratch partition
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\begin{table}[h]
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\begin{tabular}{ll}
\hline
0 & Halt the system. \\
1 & Single-user mode (for special administration). \\
2--5 & Normal operation (user defined). \\
6 & Reboot. \\
\hline
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\label{tab:efficient-backup-levels}
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\begin{tabular}{r l l l}
Tape & Level & Backup& Restore \\
& & (days)& tapes \\
\hline
1 & 0 & n/a & 1 \\
2 & 3 & 1 & 1, 2 \\
3 & 2 & 2 & 1, 3 \\
4 & 5 & 1 & 1, 2, 4 \\
5 & 4 & 2 & 1, 2, 5 \\
6 & 7 & 1 & 1, 2, 5, 6 \\
7 & 6 & 2 & 1, 2, 5, 7 \\
8 & 9 & 1 & 1, 2, 5, 7, 8 \\
9 & 8 & 2 & 1, 2, 5, 7, 9 \\
10 & 9 & 1 & 1, 2, 5, 7, 9, 10 \\
11 & 9 & 1 & 1, 2, 5, 7, 9, 10, 11 \\
\dots & 9 & 1 & 1, 2, 5, 7, 9, 10, 11, \dots \\
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|
