3d acceleration issue and home persistent image file

hi guy!
i'd like to know if there is a space limit to the persistent image file in knoppix 5.1. i tried to create a 50 gb of home persistent directory image file but at the end of the process i found that it was only 4 gb.

how do i activate a 3d acceleration on my laptop acer aspire 1310.
knoppix@Knoppix:~$ lspci -v
00:00.0 Host bridge: VIA Technologies, Inc. P/KN266 Host Bridge
Subsystem: VIA Technologies, Inc. P/KN266 Host Bridge
Flags: bus master, 66MHz, medium devsel, latency 8
Memory at b0000000 (32-bit, prefetchable) [size=128M]
Capabilities: <access denied>

00:01.0 PCI bridge: VIA Technologies, Inc. VT8633 [Apollo Pro266 AGP] (prog-if 00 [Normal decode])
Flags: bus master, 66MHz, medium devsel, latency 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
I/O behind bridge: 0000c000-0000dfff
Memory behind bridge: e0000000-efffffff
Prefetchable memory behind bridge: a0000000-afffffff
Capabilities: <access denied>

00:0a.0 CardBus bridge: O2 Micro, Inc. OZ601/6912/711E0 CardBus/SmartCardBus Controller
Subsystem: Fujitsu Limited. Unknown device 10e7
Flags: bus master, stepping, slow devsel, latency 168, IRQ 11
Memory at 24000000 (32-bit, non-prefetchable) [size=4K]
Bus: primary=00, secondary=02, subordinate=05, sec-latency=176
Memory window 0: 20000000-21fff000 (prefetchable)
Memory window 1: 22000000-23fff000
I/O window 0: 00001800-000018ff
I/O window 1: 00001c00-00001cff
16-bit legacy interface ports at 0001

00:0c.0 FireWire (IEEE 1394): Texas Instruments TSB43AB21 IEEE-1394a-2000 Controller (PHY/Link) (prog-if 10 [OHCI])
Subsystem: Fujitsu Limited. Unknown device 1162
Flags: bus master, medium devsel, latency 128, IRQ 5
Memory at f0000000 (32-bit, non-prefetchable) [size=2K]
Memory at f0004000 (32-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>

00:10.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 80) (prog-if 00 [UHCI])
Subsystem: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller
Flags: bus master, medium devsel, latency 22, IRQ 11
I/O ports at 1200 [size=32]
Capabilities: <access denied>

00:10.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 80) (prog-if 00 [UHCI])
Subsystem: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller
Flags: bus master, medium devsel, latency 22, IRQ 10
I/O ports at 1300 [size=32]
Capabilities: <access denied>

00:10.3 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 82) (prog-if 20 [EHCI])
Subsystem: VIA Technologies, Inc. USB 2.0
Flags: bus master, medium devsel, latency 32, IRQ 11
Memory at f0008000 (32-bit, non-prefetchable) [size=256]
Capabilities: <access denied>

00:11.0 ISA bridge: VIA Technologies, Inc. VT8235 ISA Bridge
Subsystem: VIA Technologies, Inc. VT8235 ISA Bridge
Flags: bus master, stepping, medium devsel, latency 0
Capabilities: <access denied>

00:11.1 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06) (prog-if 8a [Master SecP PriP])
Subsystem: VIA Technologies, Inc. VT82C586/B/VT82C686/A/B/VT8233/A/C/VT8235 PIPC Bus Master IDE
Flags: bus master, medium devsel, latency 64
I/O ports at 1100 [size=16]
Capabilities: <access denied>

00:11.5 Multimedia audio controller: VIA Technologies, Inc. VT8233/A/8235/8237 AC97 Audio Controller (rev 50)
Subsystem: Acer Incorporated [ALI] Unknown device 0030
Flags: medium devsel, IRQ 5
I/O ports at e000 [size=256]
Capabilities: <access denied>

00:11.6 Communication controller: VIA Technologies, Inc. AC'97 Modem Controller (rev 80)
Subsystem: Acer Incorporated [ALI] Unknown device 0030
Flags: medium devsel, IRQ 5
I/O ports at e100 [size=256]
Capabilities: <access denied>

00:12.0 Ethernet controller: VIA Technologies, Inc. VT6102 [Rhine-II] (rev 74)
Subsystem: Acer Incorporated [ALI] Unknown device 0030
Flags: bus master, stepping, medium devsel, latency 128, IRQ 11
I/O ports at e200 [size=256]
Memory at f0008100 (32-bit, non-prefetchable) [size=256]
Capabilities: <access denied>

01:00.0 VGA compatible controller: S3 Inc. VT8375 [ProSavage8 KM266/KL266] (prog-if 00 [VGA])
Subsystem: Acer Incorporated [ALI] Unknown device 0030
Flags: bus master, 66MHz, medium devsel, latency 128, IRQ 11
Memory at e0080000 (32-bit, non-prefetchable) [size=512K]
Memory at a8000000 (32-bit, prefetchable) [size=128M]
Expansion ROM at a0000000 [disabled] [size=64K]
Capabilities: <access denied>
knoppix@Knoppix:~$ glxinfo
name of display: :0.0
display: :0 screen: 0
direct rendering: No
server glx vendor string: SGI
server glx version string: 1.2
server glx extensions:
GLX_ARB_multisample, GLX_EXT_visual_info, GLX_EXT_visual_rating,
GLX_EXT_import_context, GLX_EXT_texture_from_pixmap, GLX_OML_swap_method,
GLX_SGI_make_current_read, GLX_SGIS_multisample, GLX_SGIX_hyperpipe,
GLX_SGIX_swap_barrier, GLX_SGIX_fbconfig, GLX_MESA_copy_sub_buffer
client glx vendor string: SGI
client glx version string: 1.4
client glx extensions:
GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_import_context,
GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_MESA_allocate_memory,
GLX_MESA_copy_sub_buffer, GLX_MESA_swap_control,
GLX_MESA_swap_frame_usage, GLX_OML_swap_method, GLX_OML_sync_control,
GLX_SGI_make_current_read, GLX_SGI_swap_control, GLX_SGI_video_sync,
GLX_SGIS_multisample, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer,
GLX_SGIX_visual_select_group, GLX_EXT_texture_from_pixmap
GLX version: 1.2
GLX extensions:
GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_import_context,
GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_MESA_copy_sub_buffer,
GLX_OML_swap_method, GLX_SGI_make_current_read, GLX_SGIS_multisample,
GLX_SGIX_fbconfig, GLX_EXT_texture_from_pixmap
OpenGL vendor string: Mesa project: www.mesa3d.org
OpenGL renderer string: Mesa GLX Indirect
OpenGL version string: 1.2 (1.5 Mesa 6.5.1)
OpenGL extensions:
GL_ARB_depth_texture, GL_ARB_imaging, GL_ARB_multitexture,
GL_ARB_point_parameters, GL_ARB_point_sprite, GL_ARB_shadow,
GL_ARB_shadow_ambient, GL_ARB_texture_border_clamp,
GL_ARB_texture_cube_map, GL_ARB_texture_env_add,
GL_ARB_texture_env_combine, GL_ARB_texture_env_crossbar,
GL_ARB_texture_env_dot3, GL_ARB_texture_mirrored_repeat,
GL_ARB_texture_non_power_of_two, GL_ARB_texture_rectangle,
GL_ARB_transpose_matrix, GL_ARB_window_pos, GL_EXT_abgr, GL_EXT_bgra,
GL_EXT_blend_color, GL_EXT_blend_func_separate, GL_EXT_blend_logic_op,
GL_EXT_blend_minmax, GL_EXT_blend_subtract, GL_EXT_clip_volume_hint,
GL_EXT_copy_texture, GL_EXT_draw_range_elements, GL_EXT_fog_coord,
GL_EXT_framebuffer_object, GL_EXT_multi_draw_arrays, GL_EXT_packed_pixels,
GL_EXT_point_parameters, GL_EXT_polygon_offset, GL_EXT_rescale_normal,
GL_EXT_secondary_color, GL_EXT_separate_specular_color,
GL_EXT_shadow_funcs, GL_EXT_stencil_wrap, GL_EXT_subtexture,
GL_EXT_texture, GL_EXT_texture3D, GL_EXT_texture_edge_clamp,
GL_EXT_texture_env_add, GL_EXT_texture_env_combine,
GL_EXT_texture_env_dot3, GL_EXT_texture_lod_bias, GL_EXT_texture_object,
GL_EXT_texture_rectangle, GL_EXT_vertex_array, GL_APPLE_packed_pixels,
GL_ATI_texture_env_combine3, GL_ATI_texture_mirror_once,
GL_ATIX_texture_env_combine3, GL_IBM_texture_mirrored_repeat,
GL_INGR_blend_func_separate, GL_MESA_pack_invert, GL_MESA_ycbcr_texture,
GL_NV_blend_square, GL_NV_point_sprite, GL_NV_texgen_reflection,
GL_NV_texture_rectangle, GL_SGIS_generate_mipmap,
GL_SGIS_texture_border_clamp, GL_SGIS_texture_edge_clamp,
GL_SGIS_texture_lod, GL_SGIX_depth_texture, GL_SGIX_shadow,
GL_SGIX_shadow_ambient, GL_SUN_multi_draw_arrays
glu version: 1.3
glu extensions:
GLU_EXT_nurbs_tessellator, GLU_EXT_object_space_tess

visual x bf lv rg d st colorbuffer ax dp st accumbuffer ms cav
id dep cl sp sz l ci b ro r g b a bf th cl r g b a ns b eat
----------------------------------------------------------------------
0x22 16 tc 0 16 0 r y . 5 6 5 0 0 16 0 0 0 0 0 0 0 None
0x23 16 tc 0 16 0 r y . 5 6 5 0 0 16 8 16 16 16 0 0 0 None
0x24 16 tc 0 24 0 r y . 5 6 5 8 0 16 8 16 16 16 16 0 0 None
0x25 16 tc 0 24 0 r . . 5 6 5 8 0 16 8 16 16 16 16 0 0 None
knoppix@Knoppix:~$

thanks for your help
harys