PFS may refer to:
The Professional File System is a filesystem originally developed commercially for the Amiga, now distributed on Aminet with a 4-clause BSD license. It is a compatible successor of AmiFileSafe (AFS), with an emphasis on added reliability and speed compared to standard Amiga filesystems. It also features multi-user abilities like the older MuFS.
The device is split into two main areas. At the beginning of the device is the metadata section, which consists of a root block, and a generic array of blocks that can be allocated to store metadata. The rest of the device is another contiguous generic array of blocks that can be allocated to store data. The metadata section usually uses a few percent of the device, depending on the size of the device.
The metadata is stored as a tree of single blocks in the metadata section. The entire directory structure is recorded in the metadata, so the data section purely contains data from files. The metadata describes the location of data in files with extents of blocks, which makes the metadata quite compact.
Apollo 15 was the ninth manned mission in the United States' Apollo program, the fourth to land on the Moon, and the eighth successful manned mission. It was the first of what were termed "J missions", long stays on the Moon, with a greater focus on science than had been possible on previous missions. It was also the first mission on which the Lunar Roving Vehicle was used.
The mission began on July 26, 1971, and ended on August 7. At the time, NASA called it the most successful manned flight ever achieved.
Commander David Scott and Lunar Module Pilot James Irwin spent three days on the Moon, including 18½ hours outside the spacecraft on lunar extra-vehicular activity (EVA). The mission landed near Hadley rille, in an area of the Mare Imbrium called Palus Putredinus (Marsh of Decay). The crew explored the area using the first lunar rover, which allowed them to travel much farther from the Lunar Module (LM) than had been possible on missions without the rover. They collected 77 kilograms (170 lb) of lunar surface material. At the same time, Command Module Pilot Alfred Worden orbited the Moon, using a Scientific Instrument Module (SIM) in the Service Module (SM) to study the lunar surface and environment in great detail with a panoramic camera, a gamma-ray spectrometer, a mapping camera, a laser altimeter, a mass spectrometer, and a lunar sub-satellite deployed at the end of Apollo 15's stay in lunar orbit (an Apollo program first).
1st verse
Mrs. Dro's not the biggest person,
There's many people bigger than she,
But she continues growning,
As many people can easily see,
There's one thing more that you hafta know,
It's that she'll keep continuin' to grow
Chorus
She'll be that way till she dies,
She's been like that but never cries,
She's mighty so she will pull through,
Or she'll sit on you
2nd verse
She's never tried a diet,
She says they do not work good anyway,
And don't ask her about it,
She tell bout sumthin' bout back in her day,
And say you know kids i don't fear,
I've never once even she'd a tear
Chorus
She'll be that way till she dies,
She's been like that but never cries,
She's mighty so she will pull through,
Or she'll sit on you [x4]
3rd verse
Mrs. Dro's not the biggest person,
As many people can easily see,
There's one more thing that you hafta know,
It's that she'll keep continuin' to grow
Chorus
She'll be that way till she dies,
She's been like that but never cries,
She's mighty so she will pull through,
Or she'll sit on you
And never once will she let you know,
The one thing that she'd never show,
Her actual weight is unknown,